基于NDVI的人工植被碳储量估算  

Carbon Storage Estimation of Artificial Vegetation based on NDVI

作　　者：王让会[1] 衣怀峰 宁虎森 吕妍[1] 吉小敏 赵福生 徐德福[1] 李琪[1] 

机构地区：[1]南京信息工程大学环境科学与工程学院,江苏南京210044 [2]中国石油新疆石油分公司,新疆克拉玛依834000 [3]新疆林业科学研究院,新疆乌鲁木齐830002

出　　处：《遥感技术与应用》2011年第4期399-404,共6页Remote Sensing Technology and Application

基　　金：国家973项目(2006CB705809);国家科技支撑项目(2006BAD26B0902);中国科学院知识创新重大项目(KSCX-YW-09);上海市气象局科技开发项目(CCFS-09-10)资助

摘　　要：人工植被是吸收CO2维护生态系统健康的重要生物成分,干旱区人工碳汇林在CO2减排方面具有重要的作用。应用2009年8月TM数据,提取克拉玛依人工减排林生态景观格局信息,并应用NDVI指数估算植被碳密度。通过测定乔木层及草本层生物量,估算出人工植被乔木层及草本层碳密度。结果表明,克拉玛依人工减排林乔木层的平均碳密度值为37.04 mg/hm2,1 m×1 m样方内草本层平均碳密度为59.65 g/m2,地上植被碳密度约为37.64 mg/hm2,植被层碳储量为250 915.5 mg;随着植被的生长发育及生物量累积效应的发挥,人工植被的碳汇功能还将进一步增大。Artificial vegetation is the important bio-component with absorbing dioxide carbon for supporting ecosystem health.Artificicial carbon sink forest play important function on reduction of carbon dioxide emission.Based on TM data of August,2009,the eco-landscape pattern information is obstained.Furthermore,using NDVI to estimate vegetation carbon density,which is a viable method.Through investigation the biomass of arbor layer and herbage layer,the carbon density of arbor layer and herbage layer are determined.The result as follows,the average carbon density is 37.04 mg/hm2 in the arbor layer,meanwhile,the average carbon density is 59.65 g/m2 in the 1 m×1 m sample site in the herbage layer.So,the total vegetation carbon density above the ground is about 37.64 mg/hm2.As a result,the carbon reserves is 250 915.5 mg in the whole vegetation layer.With the vegetation growth and biomass accumulation effects,the carbon sink function of the artificial vegetation will be further more bringing into played.

关 键 词：NDVI 人工植被 碳储量 碳循环 干旱区 二氧化碳源汇 

分 类 号：K90[历史地理—人文地理学] Q14[生物学—生态学]