基于改进型遥感生态指数的生态系统服务价值评估方法

Assessing Ecosystem Service Value with Modified Remote Sensing Ecological Index

本文通过构建遥感生态指数(RSEI)与动态栖息地指数相结合的改进型遥感生态指数(DRSEI)作为时空动态调节因子,对国家公园这种具有丰富物种的自然生态系统服务价值评估方法进行了改进。改进型遥感生态指数(DRSEI)作为时空动态调节因子的方法与应用遥感生态指数、净初级生产力指数(NPP)作为时空动态调节因子的方法进行比较分析表明:引入能够表达生态系统生物多样性时空变化特征的动态栖息地指数构建改进型遥感生态指数,由于该指数的空间信息特征更加丰富,且考虑到了区域的生物多样性因子,改进型遥感生态指数(DRSEI)作为时空动态调节因子的生态系统服务价值评估方法可以更加全面客观地反映区域生态系统的结构、功能与过程的时空分异,准确评估生态系统服务时空动态价值,为国家公园生态系统服务价值评估提供了新视角。利用该方法定量评估和分析了武夷山国家公园2017—2021年生态系统服务价值的时空变化状况,2017—2021年武夷山国家公园生态系统服务价值总体呈上升的趋势,呈现较为适当的生态环境保护与资源开发利用状况。

This article proposes an improved method for evaluating the ecosystem service value of natural ecosystems in national parks with rich species.The Modified Remote Sensing Ecological Index(MRSEI),which combines the Remote Sensing Ecological Index(RSEI)with dynamic habitat index,is constructed as a spatiotemporal dynamic moderator.A comparative analysis between the method using MRSEI and the method using the remote sensing ecological index and Net Primary Productivity index(NPP)as spatiotemporal dynamic moderators reveals that the incorporation of dynamic habitat Index in MRSEI enables a more comprehensive and objective characterization of the spatiotemporal variations in the structure,function,and processes of regional ecosystems,due to the richer spatial information characterized by this index and the consideration of regional biodiversity factors.This approach accurately evaluates the spatiotemporal dynamic value of ecosystem services and offers a new perspective to assess the ecological system services in national parks.Using this method,the spatiotemporal changes in ecosystem service value of Wuyishan National Park from 2017 to 2021 are quantitatively assessed and analyzed.There is an overall upward trend in ecosystem service value during the study period,reflecting an appropriate balance between ecological conservation and resource development and utilization in Wuyishan National Park.