文档介绍：近60年挠力河流域生态系统服务价值时空变化研究基金项目:国家自然科学基金项目(41071037),吉林师范大学研究生创新科研计划项目(201111)。
摘要:本文根据1950s—2000s挠力河流域土地利用数据,利用中国陆地生态系统单位面积生态服务价值当量表,对近60年挠力河流域生态系统服务价值的时空变化进行研究。结果表明,自1950s至2000s,挠力河流域生态系统服务价值逐渐减少,,%;价值空间格局由以高价值区为主导的状态逐渐转化为以低价值区为主导的状态,且价值质心由北向南发生转移;挠力河流域生态系统服务价值的全局自相关指数逐渐减小,高-高自相关类型沿河流主干道逐渐萎缩,且呈现破碎化趋势,低-低自相关类型呈先减少后增加的“V”趋势,呈现不显著连片化趋势。人为垦殖活动是该流域生态系统服务价值时空动态变化的主要驱动因素。
关键词:生态系统服务价值;时空动态变化;GIS;挠力河流域
A study of temporal and spatial variation of the value of ecosystem services of the Naoli River Basin ecosystem during the last 60 years
Abstract: The term “ecosystem services” refers to products such as water and ecological processes such as the natural filtering of water which the natural environment provides to mankind in the form of changed conditions in ecosystems. Ecosystem services supply important materials and natural processes necessary for human survival and these services are critical in our attempts to achieve sustainable development. Research related to the value of these dynamic ecological services provides research data and refined information to land managers who can apply research results to the rational allocation of resources. The Naoli River Basin is located in the Sanjiang Plain in Heilongjiang Province, China. It is the largest watershed in the Sanjiang Plain and is one of the most typical areas representing the natural ecosystem of th