中国平原地区农田防护林碳储量差异分析

运用换算因子连续函数法对全国平原6大区域、26个省2001—2005年间农田防护林的碳储量进行了计算和对比分析，得出如下结论:1）全国平原农田防护林碳储量在5年间呈逐年上升趋势，且增长率高于全国森林碳储量的增长率；2）6大平原区碳储量由大到小排序为:华东、东北、华北、中南、西北、西南，区域内各省市农田防护林碳储量也有所差异；3）对2001—2005年平原地区农田防护林各树种碳储量进行比较后得知杨树仍占绝对优势，其碳储量占全国平原地区农田防护林碳储量的90%左右；4）2001—2005年主要农田防护林树种碳密度呈逐年增长趋势，其碳密度由大到小排序为:桉树、杨树、木麻黄、杉树、马尾松。 

Difference analysis in carbon storage of farmland shelterbelts in the plain area of China.

This paper calculates the carbon storage of farmland shelterbelts in the plain area of China during 2001-2005 using the method of biomass expansion factor continues function.The results showed that:1) the carbon storage of plain farmland shelterbelts in China increased yearly,and the increasing rate was higher than that of forest carbon storage nation wide;2)the descending order of carbon storage of six plain areas in China was eastern China,northeastern China,northern China,central south China,northwestern China,southwestern China,and the carbon storage of farmland shelterbelt among provinces in each area varied;3) comparing the carbon storage of each tree species in plain farmland shelterbelts,it was found that poplar was the dominant tree species,whose carbon storage occupied 90% of the total of plain farmland shelterbelts in China;4) the carbon density of all tree species was rising yearly during 2001-2005,and the descending order of carbon density for tree species was Eucalyptus spp.,Poplus spp.,Casuarina spp.,Metasequoia spp.,Pinus massoniana.