土地利用变化对生态系统碳汇-碳源的影响研究——以河北武安市为例

土地利用变化引起的生态系统类型转变对于区域碳循环有着极其重要的作用。运用1997～2008年土地利用变更数据,煤、石油、天然气燃烧的碳排放量,对河北省武安市碳汇-碳源进行了估算,结果表明1997～2008年武安市碳汇处于不稳定状态,碳源呈明显增加趋势。武安市碳增汇由1997年的绿灯区转变为2008年的红灯区。各乡（镇）碳汇-碳源变化的区域差异显著,其中12个乡（镇）处于红灯区,10个乡（镇）处于绿灯区。笔者根据结果提出增加碳汇,减少碳排放的建议,旨在为区域的减排目标和可持续发展提供借鉴。

Impacts of Land Use Change on Ecosystem Carbon Sinks and Sources

Conversion of terrestrial ecosystems resulting from land-use practice which played an important role in global carbon cycling. The impacts of land use change on ecosystem carbon sinks and sources assess the carbon sinks and sources in Wu＇an City were studied based on the data of land use change from 1997 to 2008 and the emissions of coal,oil and gasoline. The results showed that the trend of carbon sinks from 1997 to 2008 was unstable while carbon sources were increasing. Meanwhile,Wu＇an City transferred from no-warning condition in 1997 to warning condition in 2008 and the changes of carbon sinks and sources were various. 12 towns were in warning condition while 10 towns were in no-warning condition.So some suggestions were proposed for increasing carbon storage and decreasing outputs of ecosystem carbon pool in order to provide references for emission reduction target and sustainable development.