南京信息工程大学学报2012，Vol.4Issue(4)：321-325,5.
江苏省植被净初级生产力时空分布格局研究
Analysis of spatio-temporal distribution characteristics of vegetation NPP in Jiangsu province
摘要
Abstract
Net Primary Productivity (NPP)is the accumulation of organic matter by green plants per unit of space and time. Using Geographic Information System and Remote Sensing spatial analysis software,this paper analyzes the spatio-temporal distribution characteristics of vegetation NPP in Jiangsu province from 2000 to 2006 based on NPP data from EOS/MOD1S. Results show a decreasing spatial trend from southeast to northwest and a temporal trend with higher NPP in 2004. The average annual NPP in Jiangsu province (569. 28 gC/(m2 ·a))was higher than the national average NPP during the same period (345. 91 gC/(m2·a))and a little lower than the average NPP in Guangdong(595. 51 gC/(m2·a)). Analyzing NPP of different city and different buffer of shoreline shows that the NPP increases firstly and then decreases with the increasing distance to shoreline. NPP of Nantong (a city in the Southeast of Jiangsu)was highest (693. 57 gC/(m2·a)),while NPP of Xuzhou (a city in the Northwest of Jiangsu)was lowest (478.72 gC/(m2·a)). NPP grows to the highest when the distance to the Ring Buffer increases to 30 km,and land cover change is an influential factor affecting changes in vegetation NPP based on Ring Buffer. Analysis of vegetation NPP shows that climate factors were the key factors controlling the NPP in Jiangsu,and the human influence is becoming more and more important.关键词
净初级生产力/江苏省/时空分布Key words
net primary productivity/Jiangsu province/spatio-temporal distribution分类
农业科技引用本文复制引用
王驷鹞,刘振波..江苏省植被净初级生产力时空分布格局研究[J].南京信息工程大学学报,2012,4(4):321-325,5.基金项目
江苏省高校自然科学基础研究计划(08KJB170004) （08KJB170004）
南京信息工程大学科研基金(20080121) （20080121）
江苏高校优势学科建设工程资助项目 （）
