摘要
在应对全球气候变化背景下,森林碳汇成为当前研究的核心内容之一.本研究基于"北京市植物种质资源调查项目"的调查资料(2007—2009)、2005年北京森林资源二类调查数据(2004)和2009年TM影像,建立了单木生物量方程、生物量转化和扩展系数和碳储量遥感估算模型,采用IPCC(2006)提供的库—差别方法估算了2011—2015年北京森林碳汇.2004年和2009年北京森林碳储量分别为5 240 490.8tC和6 158 970.6tC,平均碳密度分别为12.03tC/hm2和14.14tC/hm2(含地上和地下部分);2004年至2009年北京森林的碳汇为0.42tC/hm2.year,据此估算得到,2011年至2015年北京森林可固定的碳为914 550.0tC,年平均固定的碳为182 910.0tC.
In local and global contexts of attempting to mitigate climate change, carbon sequestration by the world＇ s forests is a focus of global climate change researches. Diameter-based aboveground biomass equations, biomass conversion and expansion factors and remote sensing models for estimating carbon storage were developed on the basis of data from the program ＂Beijing plant germplasm resources survey＂（ 2007--2009 ）, 2005 Beijing forest inventory data （2004） and TM images acquired in 2009. Then carbon sequestered by Beijing＇ s forests from 2011 to 2015 was estimated based on a pool-difference method used by IPCC （2006）. Carbon stored by Beijing＇ s forests in 2004 and 2009 were 5 240 490.8 tonnes carbon and 6 158 970.6 tonnes carbon （including above and belowground carbon storage ）, respectively, with mean carbon storage densities of 12.03tC/hm2 and 14. 14tC/hm^2. It was estimated that the carbon sequestration rate of Beijing＇ s forests from 2004 to 2009 was 0.42tC/hm^2 · year and Beijing＇ s forests in the whole study area will sequester 914 550.0 tonnes carbon from 2011 to 2015 ,with average carbon sequestered per year of 182 910.0 tonnes carbon.
出处
《应用基础与工程科学学报》
EI
CSCD
北大核心
2013年第2期224-235,共12页
Journal of Basic Science and Engineering
基金
国家林业公益性行业科研专项项目(201104006)
关键词
气候变化
碳储量
遥感
生物量转化和扩展系数
库—差别方法
climate change
carbon storage
remote sensing
biomass conversion and expansion factor
a pool-difference method
