基于GIS和RS的河南省植被净初级生产力估算

Estimation of Net Primary Productivity in Henan Province Using GIS and RS

在GIS和RS支持下,利用改进的CASA模型、地面气象数据和高时空分辨率的SPOT/VEGETATION遥感数据以及河南省土地利用图,研究了2006年河南省植被净初级生产力(NPP)及其时空分布,并对其植被生产总值进行了估算.结果表明,河南省NPP在空间分布上主要受植被类型的分布限制,在时间分布上主要受农业生产影响,河南省2006年植被生产总值约为1000亿元.该研究结果可以为河南省生态环境的可持续发展及其规划提供科学的数据依据.

Based on geographic information system (GIS) and remote sensing (RS) technology,by use of the CASA model,meteorological data,the SPOT/VEGETATION data and the land-use map,the net primary productivity and its spatial and temporal distribution in Henan Province are studied,and organic matter produced by Henan's terrestrial ecosystem is valued.The results show that the spatial distribution of NPP of Henan Province is restricted by the distribution of vegetation types; the time distribution of NPP is mainly aff...