基于土壤类型法的鄱阳湖生态经济区土壤碳密度和碳储量评估  

Evaluation of Soil Carbon Density and Carbon Storage in Poyang Lake Eco-Economic Zone Based on Soil Type Method

作　　者：查印水 汤序军 吴建勋 周强 唐学君 ZHA Yinshui;TANG Xujun;WU Jianxun;ZHOU Qiang;TANG Xuejun(East China Inventory and Planning Institute State Forestry and Grassland Administration,310019,Hangzhou,PRC;Tonggu County Forestry Bureau in Jiangxi Province,336200,Tonggu,Jiangxi,PRC)

机构地区：[1]国家林业和草原局华东调查规划设计院,杭州310019 [2]江西省铜鼓县林业局,江西铜鼓336200

出　　处：《江西科学》2020年第4期541-545,共5页Jiangxi Science

摘　　要：以鄱阳湖生态经济区为研究对象,通过文献资料查阅、区域土地利用数据调查、数学模型计算等方法,分析了研究区土地覆被变化下土壤有机碳库的动态变化特征。结果表明:研究区土壤有机碳储量平均值为615.83×10^6 t,各土地覆被类型的土壤碳密度大小为:林地>耕地>其他农用地>自然保留地>园地>牧草地。研究区土壤平均碳密度为12.03 kg/m^2,高于我国10.8 kg/m^2的土壤平均碳密度值,土地覆被类型之间的转换和土地退化是导致土壤有机碳库变化的主要原因。Taking Poyang Lake eco-economic zone as the research object,the dynamic change characteristics of soil organic carbon pool under the change of land cover in the study area were analyzed through literature review,regional land use data investigation,mathematical model calculation and other methods.The results showed that the average value of soil organic carbon in the study area was 615.83×10^6 t,and the soil carbon density of each land cover type was forest land>cultivated land>other agricultural land>natural reserve land>garden land>grassland.The average carbon density of soil in the study area was 12.03 kg/m^2,which is higher than that of 10.8 kg/m^2 in China.The conversion between land cover types and land degradation are the main reasons for the change of soil organic carbon pool.

关 键 词：土壤碳密度 土壤碳储量 土壤类型法 土地覆被变化 鄱阳湖生态经济区 

分 类 号：S714.2[农业科学—林学]