Arboriculture & Urban Forestry 46(2): March 2020 123 Table 3. Annual air pollutant removal, gross carbon sequestration, and carbon storage of 790 heritage trees in Macau, 2011 through 2012, computed by genus, tree location, and geographical origin. Genus No. of CO trees Acacia Aglaia Albizia Aleurites Aporosa Araucaria Artocarpus Averrhoa Bombax Bridelia Canarium Cassia Celtis Cinnamomum Cleistocalyx Cordia Delonix Dimocarpus Diospyros Dracontomelon Elaeocarpus Erythrina Eucalyptus Ficus Hibiscus Ilex Lagerstroemia Litchi Litsea Lophostemon Macaranga Machilus Mangifera Manikara Michelia Morus Murraya Ormosia Phyllanthus Pinus Plumeria Podocarpus Pterospermum Rhaphiolepis Sapindus Sapium Schefflera Sterculia Syzygium Ulmus Location Street tree Origin Total Non-street tree Native species Exotic species 2 1 14 10 1 1 6 4 21 3 1 2 10 44 3 1 11 38 1 2 3 8 1 440 1 2 2 2 21 1 1 2 2 1 3 4 3 1 1 3 26 12 13 4 3 6 2 7 38 1 289 501 300 490 790 199 1 425 278 10 28 221 145 1,025 188 20 264 670 2,073 163 34 568 1,656 27 108 113 483 35 185 14 94 681 42 124 162 93 33 157 130 32 63 16 60 417 1,063 1,023 28 103 173 14 162 1,386 83 11,434 O3 Air pollutant removal (g/yr) NO2 SO2 PM2.5 PM10 Total Gross carbon sequestration (kg/yr) 2,653 5 1,617 1,056 39 107 1,654 1,090 4,966 1,586 75 1,002 4,212 10,759 1,355 129 3,286 10,557 103 411 428 3,353 135 19,793 156,280 11 42 703 181 656 2,924 563 471 2,165 356 124 597 1,211 121 837 218 228 1,680 4,042 3,893 369 578 1,006 53 617 6,406 315 94,160 23,441 143,053 16,657 89,907 18,217 147,306 34,875 237,213 1,600 10 3,313 2,163 80 219 1,742 928 7,301 1,488 153 2,053 4,790 15,285 1,293 264 4,456 10,799 211 842 876 2,121 276 140,949 86 1,439 109 741 5,168 340 965 1,305 728 254 1,222 1,032 247 505 132 468 3,110 8,278 7,973 222 521 1,354 109 1,264 9,613 646 77,555 173,483 123,546 127,492 251,038 983 1 318 208 8 21 523 404 1,558 524 15 197 1,360 3,066 445 25 920 3,705 20 81 84 1,479 27 54,667 8 138 67 202 695 209 93 802 70 24 117 412 24 310 81 45 391 795 766 137 236 283 11 121 1,861 62 34,530 44,065 26,123 52,473 78,596 5 0 58 24 1 1 18 12 83 15 1 6 64 47 10 9 33 1 438 11 4,339 1,754 61 70 1,471 1,129 7,089 1,252 107 443 189 15,576 13 3 127 11,853 2 5,531 1,098 3,685 150 191 728 673 3,966 100 82 610 108 592 5,877 29 10,070 5,482 200 447 5,629 3,707 22,021 5,052 370 3,965 16,627 46,949 4,367 646 12,962 38,697 513 2,179 2,182 11,435 574 1,555 140,142 513,386 1 8 1 7 230 3,083 479 2,292 53 3 10 14 8 2 12 11 3 5 1 4 32 35 84 2 7 14 1 13 107 4 4,102 303 773 1,248 555 176 884 911 190 466 118 274 2,531 2,609 6,237 206 794 1,117 81 987 9,124 332 13,622 1,460 2,436 5,696 1,810 614 2,988 3,706 616 2,186 566 1,078 8,162 16,822 19,976 964 2,239 3,946 269 3,165 28,497 1,442 888 84,263 302,830 1,832 153,005 538,879 1,322 108,472 366,028 1,398 128,796 475,681 2,720 237,268 841,709 79 8 663 480 17 16 211 180 986 70 33 71 333 1,751 123 44 489 1,337 27 83 107 425 18 11,558 23 71 17 60 871 30 50 37 79 27 114 169 52 15 13 41 609 117 425 18 99 153 54 181 1,529 72 9,653 14,383 11,406 12,630 24,036 Carbon storage (kg) 5,747 135 36,278 26,441 534 919 13,703 9,254 69,295 2,977 1,611 3,763 26,588 154,241 8,490 2,638 33,445 50,363 1,166 4,918 5,693 30,878 5,448 2,241,163 880 3,870 359 2,303 47,292 1,379 3,391 6,472 7,123 1,152 7,043 7,022 1,832 454 350 2,316 31,255 5,018 49,477 246 4,221 6,522 2,351 9,054 100,190 3,502 1,334,392 1,706,371 953,895 2,086,869 3,040,764 ©2020 International Society of Arboriculture
March 2020
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