3b. Austin MCT Report - Land Cover — original pdf

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MY CITY’S TREES Bringing the Nation’s Forest Census to Urban Areas Austin, Texas www.mycitystrees.com Created: December 13, 2024 INTRODUCTION Information presented in this report comes from the USDA Forest Service’s Urban Forest Inventory & Analysis (FIA) program. The Austin publication, Austin's Urban Forest, 2014, contains detailed information about the inventory. Readers are encouraged to view the publication to learn more about the Urban FIA program, inventory methods, assessment, and management implications. My City’s Trees is a web application enabling access and exploration of a city’s urban forest using Urban FIA data, U.S. Census data, and thematic spatial data. This report was generated from My City’s Trees on December 13, 2024. Austin, TX was selected for city, land cover was selected for theme, and Developed - Open, Developed - Low, Developed - Medium, Developed - High, Deciduous / Mixed Forest, Evergreen Forest, Shrub / Herbaceous, and Water / Barren were selected for classes (described below). Land cover classes are based on the 2019 National Land Cover Database (MRLC). CLASS Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Water / Barren DESCRIPTION Open space on developed land Low intensity developed land Medium intensity developed land High intensity developed land Deciduous forest, mixed forest, and woody wetland lands Evergreen forest land Shrub/scrub, grassland/herbaceous, pasture/hay, and cultivated crop lands Open water, barren land, and emergent herbaceous wetlands The city boundary is from the 2010 U.S. Census. The sample data used in this report were collected from 2014 to 2021. Population data is from the 2020 U.S. Census. Questions and comments about this application may be directed to Rebekah Zehnder, Texas A&M Forest Service, at (979) 458-6630 or mct@tfs.tamu.edu. Links My City’s Trees: www.mycitystrees.com Austin's Urban Forest, 2014: http://www.nrs.fs.fed.us/pubs/50393 Urban FIA Program: https://www.fs.usda.gov/research/programs/urbanfia A Note about Sampling Error Estimates are based on a sample and are therefore subject to sampling error. Urban FIA is designed to provide reliable estimates at the population level (e.g., the city boundary). In general, with more specific My City’s Trees • Austin, TX 2 www.mycitystrees.com estimates (e.g., publicly owned versus all ownerships, specific species, single class of theme, etc.) sampling errors will increase and the reliability of the estimate will decrease. Sampling errors should be considered in any application of the estimates presented here. While sampling errors are not included per se, the number of plots used in a given estimate gives somewhat of an indication of the estimate’s reliability. Requests for assistance evaluating the reliability of the estimates or other questions about uses of the data may be directed to regional USDA Forest Service contacts found in the Data Consultations and Requests section at https://www.fs.usda.gov/research/programs/fia#data-and-tools. How to Cite this Report Texas A&M Forest Service; U.S. Department of Agriculture, Forest Service. (2024). My City’s Trees: Austin, Texas. My City’s Trees. Generated December 13, 2024, from https://mct.tfs.tamu.edu My City’s Trees • Austin, TX 3 www.mycitystrees.com TABLE OF CONTENTS OVERVIEW .........................................................................................................................................5 TREE COUNT ......................................................................................................................................7 WOOD VOLUME.................................................................................................................................9 CARBON STORAGE ........................................................................................................................... 11 COMPENSATORY VALUE................................................................................................................... 13 LEAF BIOMASS ................................................................................................................................. 15 ENERGY SAVINGS ............................................................................................................................. 17 AVOIDED RUNOFF ............................................................................................................................ 19 POLLUTION REMOVAL...................................................................................................................... 21 AVOIDED HEALTH EFFECTS ............................................................................................................... 23 APPENDIX ADDITIONAL TABLES ........................................................................................................................ 25 SPECIES LIST ..................................................................................................................................... 27 My City’s Trees • Austin, TX 4 www.mycitystrees.com OVERVIEW Austin is comprised of 195,259 acres with a population of 936,728 people. The city is divided into 8 land cover classes. This report contains information for a selected area consisting of the following 8 classes: Developed - Open, Developed - Low, Developed - Medium, Developed - High, Deciduous / Mixed Forest, Evergreen Forest, Shrub / Herbaceous, and Water / Barren. These classes cover 195,259 acres, which is 100 percent of the city. A total of 936,728 people live in the selected area, which is 100 percent of the entire city population. A total of 225 locations were sampled in the urban forest inventory, of which 225 plots were located in the selected area. Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Figure 1. Map of Austin and selected land cover classes. Water / Barren My City’s Trees • Austin, TX www.mycitystrees.com 5 Table 1. Distribution of area and population by selected land cover classes. Percent of City Acres Population Percent of City Population Plots Class Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Water / Barren Acres 23,425 33,272 41,247 24,771 10,168 36,493 20,844 5,039 12 17 21 13 5 19 11 3 103,874 240,418 319,086 173,963 14,036 60,196 23,153 2,002 11 26 34 19 1 6 2 0 23 42 47 35 15 45 12 6 All 195,259 100 936,728 100 225 *Note rows in this and/or following tables may not sum to totals due to rounding. Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Figure 2. Distribution of area, population, and plots by selected land cover classes. Water / Barren My City’s Trees • Austin, TX 6 www.mycitystrees.com TREE COUNT The trees in an urban area make up the urban forest. Street trees, park trees, yard trees — any tree in Austin is part of its urban forest. The number of trees is based on living trees at least one inch in diameter. Classes The selected area contains 37.24 million trees, which is 100 percent of the 37.24 million trees across the entire city. There are 39.8 trees per person in the selected area. Table 2. Count by land cover class. Class Million Trees Percent Trees Per Acre Trees Per Person Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Water / Barren All 1.07 4.12 1.03 0.34 6.30 20.20 4.00 0.19 37.24 3 11 3 1 17 54 11 1 100 45.5 123.7 25.0 13.8 619.5 553.5 192.0 37.9 190.7 10.3 17.1 3.2 2.0 448.8 335.6 172.8 95.4 39.8 Figure 3. Total count by land cover class. Figure 4. Trees per acre by land cover class. My City’s Trees • Austin, TX 7 www.mycitystrees.com Species There were 65 different species observed in the selected area. The three most common species, Ashe juniper, cedar elm, and Texas persimmon, collectively account for 58 percent. A list of all 65 species found at the 225 sampled locations is included at the end of the report. Table 3. Count by species. Species Million Trees Percent Trees Per Person Ashe juniper cedar elm Texas persimmon Other (62 more) All 11.79 6.89 2.89 15.67 37.24 32 19 8 42 100 12.6 7.4 3.1 16.7 39.8 Figure 5. Count by species. Ownership An estimated 19.47 million trees are on private land in the selected area. Examples of private property include single- and multi-family residences, businesses, and commercial property. An estimated 17.78 million trees in the selected area are on public land. Examples of public property are schools, parks, rights-of- way, and other lands owned by public entities. Figure 6. Count by ownership My City’s Trees • Austin, TX 8 www.mycitystrees.com WOOD VOLUME Volume is used to measure wood quantity — the solid content of the tree stem. Volume is estimated for live trees at least five inches in diameter. The volume estimates are sound volume, which accounts for defects like rotten or missing portions of the trunk and broken tops. Classes The selected area contains 86.7 million cubic feet of wood, which is 100 percent of the 86.7 million cubic feet of wood across the entire city. Table 4. Volume by land cover class. Million Cubic Feet Percent Cubic Feet Per Acre Cubic Feet Per Person Class Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Water / Barren All 8.2 14.0 5.8 4.9 8.0 41.2 3.1 1.4 86.7 9 16 7 6 9 4 2 48 100 349.3 422.2 141.7 196.6 784.4 1,129.5 148.7 282.0 443.8 78.8 58.4 18.3 28.0 568.2 684.7 133.9 709.7 92.5 Figure 7. Total volume by land cover class. Figure 8. Volume per acre by land cover class My City’s Trees • Austin, TX 9 www.mycitystrees.com Species The three species with the highest amounts of wood volume were Ashe juniper, live oak, and cedar elm. Collectively these three species account for 65 percent of total wood volume in the selected area. Table 5. Volume by species. Species Million Cubic Feet Percent Cubic Feet Per Person Ashe juniper live oak cedar elm Other (62 more) All 33.0 15.0 8.4 30.2 86.7 38 17 10 35 100 35.2 16.1 9.0 32.2 92.5 Figure 9. Volume by species. Ownership An estimated 51.6 million cubic feet of wood are on private land in the selected area. An estimated 35.0 million cubic feet of wood in the selected area are on public land. Figure 10. Volume by ownership My City’s Trees • Austin, TX 10 www.mycitystrees.com CARBON STORAGE Trees store carbon. As they grow, they lock away more carbon from the atmosphere. Carbon storage includes the amount of carbon bound up in the aboveground and belowground portions of trees . Carbon estimates include live trees at least one inch in diameter and dead trees at least five inches in diameter. Classes Trees in the selected area store 1,584.7 thousand tons of carbon, which is 100 percent of the 1,584.7 thousand tons of carbon stored by trees across the entire city. Table 6. Carbon storage by land cover class. Class Thousand Tons Percent Tons Per Acre Tons Per Person Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Water / Barren 173.3 283.2 119.5 105.2 154.5 665.1 63.8 20.2 11 18 8 7 10 42 4 1 All 1,584.7 100 7.4 8.5 2.9 4.2 15.2 18.2 3.1 4.0 8.1 1.7 1.2 0.4 0.6 11.0 11.0 2.8 10.1 1.7 Figure 11. Total carbon storage by land cover class. Figure 12. Carbon storage per acre by land cover class. My City’s Trees • Austin, TX 11 www.mycitystrees.com Species Species live oak Ashe juniper cedar elm Other (62 more) All The three species with the highest amounts of carbon storage were live oak, Ashe juniper, and cedar elm. Collectively these three species account for 67 percent of total carbon storage in the selected area. Table 7. Carbon storage by species. Thousand Tons Percent Tons Per Person 458.5 425.4 179.2 521.6 1,584.7 29 27 11 33 100 0.5 0.5 0.2 0.6 1.7 Figure 13. Carbon storage by species. Ownership Private property accounts for 999.9 thousand tons of carbon in the selected area. Public property accounts for 584.9 thousand tons. Figure 14. Carbon storage by ownership My City’s Trees • Austin, TX 12 www.mycitystrees.com COMPENSATORY VALUE Compensatory value is an estimate of the value of the forest as a structural asset, meaning a compensation amount for the physical loss of the trees. Classes Trees in the selected area have a compensatory value of 11,457 million dollars, which is 100 percent of the total 11,457 million dollars of value for trees across the entire city. Table 8. Compensatory value by land cover class. Class Million Dollars Percent Dollars Per Acre Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Water / Barren 1,155 2,792 1,372 927 628 4,104 428 53 10 24 12 36 8 5 4 0 All 11,457 100 Dollars Per Person 11,116 11,613 4,299 5,327 44,724 68,170 18,471 26,581 12,231 49,291 83,917 33,256 37,407 61,738 112,448 20,517 10,561 58,677 Figure 15. Total compensatory value by land cover class. Figure 16. Compensatory value per acre by land cover class. My City’s Trees • Austin, TX 13 www.mycitystrees.com Species The three species with the highest compensatory value were Ashe juniper, live oak, and cedar elm. Collectively these three species account for 65 percent of the total compensatory value in the selected area. Table 9. Compensatory value by species. Species Million Dollars Percent Dollars Per Person Ashe juniper live oak cedar elm Other (62 more) All 3,166 2,963 1,297 4,032 11,457 28 26 11 35 100 3,380 3,163 1,384 4,304 12,231 Figure 17. Compensatory value by species. Ownership Compensatory value of trees on private property and public property in the selected area is 8,032 million dollars and 3,425 million dollars, respectively. Figure 18. Compensatory value by ownership. My City’s Trees • Austin, TX 14 www.mycitystrees.com LEAF BIOMASS Many benefits urban trees provide come from leaves — for example, they remove carbon dioxide from the air, they catch rain as it falls, and they provide cooling shade. One way of measuring leaves is by weight, or biomass. Leaf biomass is based on the live crowns of trees. Classes The total weight of leaves on trees in the selected area is 287,901 oven-dry tons, which is 100 percent of the total 287,901 oven-dry tons of leaves on trees across the entire city. Table 10. Leaf biomass by land cover class. Class Oven-dry Tons Percent Oven-dry Tons Per Acre Oven-dry Tons Per Person Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Water / Barren 7 12 7 3 7 4 1 60 19,161 34,286 19,811 8,964 18,850 173,141 10,840 2,849 0.82 1.03 0.48 0.36 1.85 4.74 0.52 0.57 1.47 0.18 0.14 0.06 0.05 1.34 2.88 0.47 1.42 0.31 All 287,901 100 Figure 19. Total leaf biomass by land cover class. Figure 20. Leaf biomass per acre by land cover class. My City’s Trees • Austin, TX 15 www.mycitystrees.com Species The three species with the highest leaf biomass were Ashe juniper, live oak, and cedar elm. Collectively these three species account for 78 percent of total leaf biomass in the selected area. Table 11. Leaf biomass by species. Species Oven-dry Tons Percent Oven-dry Tons Per Person Ashe juniper live oak cedar elm Other (62 more) All 143,187 63,249 18,827 62,638 287,901 50 22 7 22 100 0.15 0.07 0.02 0.07 0.31 Figure 21. Leaf biomass by species. Ownership Weight of leaves for trees on private property and public property in the selected area is 161,653 oven-dry tons and 126,249 oven-dry tons, respectively. Figure 22. Leaf biomass by ownership. My City’s Trees • Austin, TX 16 www.mycitystrees.com ENERGY SAVINGS Trees reduce residential energy use by shading buildings, providing evaporative cooling, and blocking winter winds. Reductions in energy use not only reduce the use of fuels, but also save residents money. In some instances trees can increase energy use instead — for example, by shading a home in winter. Energy savings estimates include live trees at least five inches in diameter and 20 feet tall. Classes The total annual savings in residential energy costs because of trees in the selected area is 21.28 million dollars, which is 100 percent of the total 21.28 million dollars of annual residential energy savings due to trees across the entire city. This amounts to a savings of $22.72 per person per year in the selected area. Table 12. Residential energy savings by land cover class. Class Million Dollars Percent Dollars Per Acre Dollars Per Person Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Water / Barren 2.28 10.50 6.68 0.90 0.00 0.92 0.00 0.00 11 49 31 4 0 4 0 0 97.26 315.65 161.86 36.42 0.00 25.19 0.00 0.00 All 21.28 100 108.97 21.93 43.68 20.92 5.19 0.00 15.27 0.00 0.00 22.72 Figure 23. Total residential energy savings by land cover class. Figure 24. Residential energy savings per acre by land cover class. My City’s Trees • Austin, TX 17 www.mycitystrees.com Species Species live oak cedar elm sugarberry Other (62 more) All The three species with the highest residential energy savings were live oak, cedar elm, and sugarberry. Collectively these three species account for 59 percent of total savings in residential energy costs in the selected area. Table 13. Residential energy savings by species. Million Dollars Percent Dollars Per Person 6.11 3.79 2.59 8.79 21.28 29 18 12 41 100 6.53 4.04 2.76 9.38 22.72 Figure 25. Residential energy savings by species Ownership Residential energy savings of trees on private property and public property in the selected area amount to 20.23 million dollars per year and 1.05 million dollars per year, respectively. My City’s Trees • Austin, TX www.mycitystrees.com Figure 26. Residential energy savings by ownership. 18 AVOIDED RUNOFF Trees intercept precipitation and promote infiltration and water storage in the soil. Avoided surface water runoff is estimated by comparing the difference in runoff with and without trees present, using rainfall intercepted and evapotranspiration by leaves and ground surface storage and infiltration. Classes Surface water runoff that was avoided because of trees in the selected area is 202.9 million cubic feet per year, which is 100 percent of the total 202.9 million cubic feet per year of runoff avoided across the entire city. Table 14. Avoided surface water runoff by land cover class. Million Cubic Feet Per Year Percent Cubic Feet Per Year Per Acre Cubic Feet Per Year Per Person Class Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Water / Barren 16.3 34.5 17.5 7.7 23.7 86.4 13.1 3.7 8 17 9 4 12 43 6 2 695.7 1,036.7 424.9 311.0 2,332.8 2,366.7 628.1 741.8 156.9 143.5 54.9 44.3 1,689.9 1,434.8 565.5 1,867.0 216.6 All 202.9 100 1,039.3 Figure 27. Total avoided surface water runoff by land cover class. Figure 28. Avoided surface water runoff per acre by land cover class. My City’s Trees • Austin, TX 19 www.mycitystrees.com Species Species Ashe juniper live oak cedar elm Other (62 more) All The three species with the highest runoff avoided values were Ashe juniper, live oak, and cedar elm. Collectively these three species account for 58 percent of total avoided runoff in the selected area. Table 15. Surface water runoff avoided by species. Million Cubic Feet Per Year Percent Cubic Feet Per Year Per Person 55.5 32.5 29.8 85.1 202.9 27 16 15 42 100 59.3 34.7 31.8 90.9 216.6 Figure 29. Surface water runoff avoided by species. Ownership An estimated 123.7 million cubic feet per year of avoided surface water runoff are attributed to trees on private property in the selected area. The balance, 79.3 million cubic feet per year, is attributed to trees on public property. Figure 30. Surface water runoff avoided by ownership. My City’s Trees • Austin, TX 20 www.mycitystrees.com POLLUTION REMOVAL Trees improve air quality by removing pollutants from the air. Estimates are calculated for carbon monoxide (CO), ozone (O3), sulfur dioxide (SO2), nitrogen dioxide (NO2), and particulate matter less than 2.5 microns (PM2.5). Classes Air pollution removed by trees in the selected area is 2,053 tons per year, which is 100 percent of the total 2,053 tons per year removed by trees across the entire city. Table 16. Pollution removal by land cover class. Class Tons Per Year Percent Tons Per Year Per 1,000 Acres Tons Per Year Per 1,000 People Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Water / Barren 8 17 9 4 12 43 6 2 165 349 177 78 240 874 132 38 7.04 10.49 4.30 3.15 23.59 23.94 6.35 7.50 10.51 1.59 1.45 0.56 0.45 17.09 14.51 5.72 18.88 2.19 All 2,053 100 Figure 31. Total pollution removal by land cover class. Figure 32. Pollution removal per acre by land cover class. My City’s Trees • Austin, TX 21 www.mycitystrees.com Species The three species with the highest pollution removal values were Ashe juniper, live oak, and cedar elm. Collectively these three species account for 58 percent of pollution removal by trees in the selected area. Table 17. Pollution removal by species. Species Tons Per Year Percent Tons Per Year Per 1,000 People Ashe juniper live oak cedar elm Other (62 more) All 562 328 301 861 2,053 27 16 15 42 100 0.60 0.35 0.32 0.92 2.19 Figure 33. Pollution removal by species. Ownership An estimated 1,251 tons per year of pollution are removed by trees on private land in the selected area. An estimated 802 tons per year of pollution are removed by trees on public land. Figure 34. Pollution removal by ownership. My City’s Trees • Austin, TX 22 www.mycitystrees.com AVOIDED HEALTH EFFECTS The air quality effects of trees have a positive impact on human health. Removal of ozone (O3), sulfur dioxide (SO2), nitrogen dioxide (NO2), and particulate matter less than 2.5 microns (PM2.5) are included in the calculation. Classes The economic value of avoided human health impacts from pollution removal by trees in the selected area is 7.06 million dollars per year, which is 100 percent of the total 7.06 million dollars per year from trees across the entire city. Table 18. Value of avoided human health impacts by land cover class. Million Dollars Per Year Percent Dollars Per Year Per Acre Dollars Per Year Per Person Class Developed - Open Developed - Low Developed - Medium Developed - High Deciduous / Mixed Forest Evergreen Forest Shrub / Herbaceous Water / Barren All 0.57 1.20 0.61 0.27 0.83 3.00 0.46 0.13 7.06 8 17 9 4 12 42 7 2 100 24.20 36.07 14.78 10.82 81.16 82.34 21.85 25.81 36.16 5.46 4.99 1.91 1.54 58.80 49.92 19.67 64.96 7.54 Figure 35. Total value of avoided human health impacts by land cover class. Figure 36. Value of avoided human health impacts per acre by land cover class. My City’s Trees • Austin, TX 23 www.mycitystrees.com Species Species Ashe juniper live oak cedar elm Other (62 more) All The three species with the highest values for avoided human health impacts were Ashe juniper, live oak, and cedar elm. Collectively these three species account for 58 percent of the total value in the selected area. Table 19. Value of avoided human health impacts by species. Million Dollars Per Year Percent Dollars Per Year Per Person 1.93 1.13 1.04 2.96 7.06 27 16 15 42 100 2.06 1.21 1.11 3.16 7.54 Figure 37. Value of avoided human health impacts by species. Ownership An estimated 4.30 million dollars per year of avoided human health impacts from pollution is attributed to trees on private property in the selected area. An estimated 2.76 million dollars per year of avoided human health impacts from pollution is attributed to trees on public property in the selected area. Figure 38. Value of avoided human health impacts by ownership. My City’s Trees • Austin, TX 24 www.mycitystrees.com APPENDIX ADDITIONAL TABLES Table A1. Urban forest statistics by diameter class in the selected area. Diameter Class (inches) 1.0 to 4.9 5.0 to 9.9 10.0 to 19.9 20.0 to 29.9 30.0 + Total 25.64 7.70 3.59 0.25 0.06 37.24 113.7 345.0 742.2 205.7 178.1 1,584.7 n/a 22.4 45.1 10.9 8.3 86.7 1,349 2,931 5,065 1,311 801 11,457 36,206 85,530 139,933 18,989 7,244 287,901 n/a 4.73 13.04 2.45 1.06 21.28 32.2 58.0 92.8 13.3 6.6 202.9 325 587 939 135 67 2,053 1.12 2.02 3.23 0.46 0.23 7.06 Count (million trees) Carbon (thousand tons) Volume (million cubic feet) Value (million dollars) Leaves (oven-dry tons) Energy (million dollars) Runoff (million cubic feet per year) Pollution (tons per year) Health (million dollars per year) My City’s Trees • Austin, TX 25 www.mycitystrees.com Landuse is determined by the field crew during plot measurement. For a full description of the procedure and landuses, please see the field manual. Here, landuses were grouped as follows: Agriculture/ Other Developed Forest Recreation Residential agricultural land, pasture, idle farmland, orchard/nursery, Christmas tree plantation, maintained wildlife opening, windbreak/shelterbelt, rangeland, nonvegetated, wetland, beach, nonforest-chaparral, water, other developed, cultural, institutional, commercial/industrial, cemetery, rights- of-way, transportation, utility, mining and wasteland forest recreation, park, golf courses residential, multi-family residential Table A2. Urban forest statistics by landuse in the selected area. Landuse Developed Forest Recreation Residential Total Agriculture / Other 30.40 0.97 0.00 1.26 4.61 37.24 884.4 149.5 0.0 31.9 518.9 1,584.7 53.3 7.0 0.0 1.4 25.0 86.7 4,587 1,556 558 4,756 11,457 199,611 15,375 6,193 66,723 287,901 0 0 -0.12 2.39 0.00 0.00 19.01 21.28 125.4 14.0 0.0 4.3 59.3 202.9 1,268 141 0 43 600 2,053 0.49 0.00 0.15 2.06 7.06 4.36 Count (million trees) Carbon (thousand tons) Volume (million cubic feet) Value (million dollars) Leaves (oven-dry tons) Energy (million dollars) Runoff (million cubic feet per year) Pollution (tons per year) Health (million dollars per year) My City’s Trees • Austin, TX 26 www.mycitystrees.com SPECIES LIST A total of 65 different species were observed in the selected area. The species are listed alphabetically by scientific name. Scientific Name Acer negundo Arbutus xalapensis Broussonetia papyrifera Carya illinoinensis Celtis laevigata Celtis occidentalis Cercis canadensis Cornus drummondii Diospyros texana Ehretia anacua Eriobotrya japonica Fraxinus berlandieriana Fraxinus pennsylvanica Fraxinus texensis Fraxinus velutina Ilex vomitoria Juglans nigra Juniperus ashei Juniperus virginiana Koelreuteria paniculata Lagerstroemia indica Ligustrum japonicum Ligustrum lucidum Ligustrum sinense Maclura pomifera Magnolia grandiflora Melia azedarach Morus alba Common Name boxelder Texas madrone paper mulberry pecan sugarberry hackberry eastern redbud roughleaf dogwood Texas persimmon Anacua knockaway loquat Berlandier ash green ash Texas ash velvet ash yaupon black walnut Ashe juniper eastern redcedar goldenrain tree crapemyrtle Japanese privet glossy privet Chinese privet Osage-orange southern magnolia chinaberry white mulberry My City’s Trees • Austin, TX 27 www.mycitystrees.com Morus rubra Parkinsonia aculeata Phoenix dactylifera Pistacia chinensis Pittosporum tobira Platanus occidentalis Populus deltoides Prosopis glandulosa Prunus laurocerasus Prunus persica Prunus spp. Pyrus calleryana Pyrus communis Quercus buckleyi Quercus fusiformis Quercus macrocarpa Quercus muehlenbergii Quercus nigra Quercus polymorpha Quercus shumardii Quercus stellata Quercus texana Quercus virginiana Rhus lanceolata Salix nigra Sophora secundiflora Spondias dulcis Taxodium distichum Triadica sebifera Quercus sinuata var. sinuata Quercus sinuata var. breviloba red mulberry Jerusalem thorn date palm Chinese pistache Japanese cheesewood American sycamore eastern cottonwood honey mesquite cherry laurel peach cherry and plum spp. Mexican white oak Callery pear common pear Buckley oak Texas live oak bur oak chinkapin oak water oak Shumard oak Durand oak bastard oak post oak Texas red oak live oak prairie sumac black willow mescal bean Spondias dulcis baldcypress Chinese tallowtree Sapindus saponaria var. drummondii western soapberry Sideroxylon lanuginosum chittamwood, gum bumelia My City’s Trees • Austin, TX 28 www.mycitystrees.com Ulmus americana Ulmus crassifolia Ulmus parvifolia Viburnum rufidulum American elm cedar elm Chinese elm rusty blackhaw My City’s Trees • Austin, TX 29 www.mycitystrees.com