Temporal-spatial patterns of vegetation net primary productivity and its response to climate factors in Wanjiang city belt based on CASA model
In order to assess the NPP of Wanjiang City belt which in the central region of Anhui province,MODIS time-series remote sensing data,meteorological data,and improved CASA light energy utilization model were used.On this basis,the temporal-spatial distribution pattern and variation of NPP was analyzed,besides,the response of NPP to climate factors was explored by using regression analysis,correlation analysis and other methods.Results show that the vegetation NPP of Wan Jiang City Belt showed an increasing trend from 2000 to 2013.Significant difference of NPP was found in different land use types,forest land＞grassland ＞ cultivated land ＞ construction land ＞unused land ＞water.There is a decrease trend from the south to the northwest of annually average NPP.The increase and decrease region of the annual variation of NPP with the range of plus or minus 10 gC·m-2·a-1.Temperature is the main climate factor which affecting the temporal-spatial distribution and evolution of vegetation NPP in the study area.
net primary productivitytemporal-spatial patternCASA modelclimate factorWan Jiang City Belt
NETL
NSTL
万方数据
维普
