承德市森林植被净初级生产力的遥感估算  

Estimation of Forest Net Primary Productivity in Chende City Based on Remote Sensing

作　　者：高瞻[1,2] 

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116 [2]江苏省资源环境信息工程重点实验室,江苏徐州221116

出　　处：《石家庄学院学报》2011年第3期41-45,共5页Journal of Shijiazhuang University

摘　　要：以承德市的森林分布区为研究区域,基于改进的光能利用率模型,利用2008年MODIS/NDVI产品和地面气象站点数据,结合土地覆被类型,估算承德市森林植被的年净初级生产力,并分析其时空分布格局.研究结果表明:2008年承德市森林NPP的总量为1.075×108 g.a-1,年平均值为424.59 g.m-2.a-1,NPP最高值为656.78 g.m-2.a-1.总体空间分布趋势是东南高,西北低,其季节变化较明显,呈单峰型.Taking Chengde City as a case study,the annual forest Net Primary Production（NPP） is estimated based on the light utility efficiency mode.By using the MODIS/NDVI products,surface meteorological data and land-cover map,its spatial and temporal distribution in 2008 is analyzed.The results show that the total forest NPP in Chengde is 1.075×108g· a-1 in 2008;the average value is 425.59 g·m-2·a-1;the highest value of NPP is 656.78 g· m-2·a-1.Spatial distribution of the overall trend is higher in southeast than in northwest.There is an obvious seasonal change,and the varying curve acts as a single peak value wave.

关 键 词：净初级生产力(NPP) 光能利用率模型 遥感 承德市 

分 类 号：Q948.11[生物学—植物学] TP79[自动化与计算机技术—检测技术与自动化装置]