Carbon storage and sequestration by urban trees in the USA
Carbon storage and sequestration by urban trees in the USA
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DOI：
10.1016/s0269-7491(01)00214-7
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发表时间：
2002-01-01
影响因子：
8.9
通讯作者：
Crane, DE
中科院分区：
文献类型：
--
作者：
Nowak, DJ;Crane, DE
根据美国10个城市的实地数据和全国城市树木覆盖数据，估计美国相邻城市的树木目前储存7亿吨碳（价值143亿美元），总固碳率为2280万吨/年（4.6亿美元/年）。城市内的碳储存量从纽约州纽约的120万tC到新泽西州泽西城的19,300 tC不等。城市用地比例最高的地区是东北部（8.5%）和东南部（7.1%）。美国中北部、东北部、中南部和东南部地区的城市森林储存和固碳最多，每公顷平均碳储存量分别在东南部、中北部、东北部和太平洋西北部地区最大。全国平均城市森林碳储量密度为25.1 tC/ha，而森林为53.5 tC/ha。这些数据可用于帮助评估城市森林在减少大气二氧化碳（一种主要温室气体）方面的实际和潜在作用。爱思唯尔科技有限公司出版
Based on field data from 10 USA cities and national urban tree cover data, it is estimated that urban trees in the coterminous USA currently store 700 million tonnes of carbon ($14,300 million value) with a gross carbon sequestration rate of 22.8 million tC/yr ($460 million/year). Carbon storage within cities ranges from 1.2 million tC in New York, NY, to 19,300 tC in Jersey City, NJ. Regions with the greatest proportion of urban land are the Northeast (8.5%) and the southeast (7.1%). Urban forests in the north central, northeast, south central and southeast regions of the USA store and sequester the most carbon, with average carbon storage per hectare greatest in southeast, north central, northeast and Pacific northwest regions, respectively. The national average urban forest carbon storage density is 25.1 tC/ha, compared with 53.5 tC/ha in forest stands. These data can be used to help assess the actual and potential role of urban forests in reducing atmospheric carbon dioxide, a dominant greenhouse gas. Published by Elsevier Science Ltd.