基于NPP数据的江苏省生态价值时空格局分析

Analysis on Spatial and Temporal Pattern of Ecological Value of Jiangsu Province Based on NPP Data

植被净初级生产力(NPP)是评价生态系统服务功能的重要指标。本文基于NPP数据,估算了区域生态价值,运用空间分析技术研究了江苏省生态价值的空间分布规律和时空演变特征。结果表明:1) 2000—2014年,年均生态价值分布呈西低东高的特点,生态价值高值区主要分布在苏南及沿海地区,苏北及内陆地区生态价值均值较低; 2)区域年均生态价值大致呈曲线波动变化; 3) 15年间江苏省生态价值总体呈增加趋势,北部地区增长相对较快。

Ecological environment is the material basis of human survival.Weighing the trade-off between ecosystem and economic system can provide an important reference for the regional sustainable development.Based on the NPP data,this paper estimates the regional ecological value,and uses the spatial analysis technique to study the spatial distribution and spatial and temporal evolution of ecological value in Jiangsu Province.Results show that:(1)In the province,the annual ecological values are higher in the east and lower in the west part of the province.The high value area of ecological value is mainly distributed in south of Jiangsu and coastal areas,and the ecological value of northern Jiangsu and inland areas is low.(2)The annual average ecological value of the region is roughly fluctuating.(3)In 15 years,the overall ecological value of Jiangsu Province showed an increasing trend,the northern region grew rapidly,the northern region grew rapidly.