桂西北喀斯特地区生态系统服务功能重要性评价与空间分析  

Assessment and spatial analysis of ecosystem service importance in karst area of Northwest Guangxi

作　　者：凡非得[1,2,3] 罗俊[1,2,3] 王克林[1,2] 陈洪松[1,2] 张伟[1,2,3] 

机构地区：[1]中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室,长沙410125 [2]中国科学院环江喀斯特生态系统观测研究站,广西环江547100 [3]中国科学院研究生院,北京100049

出　　处：《生态学杂志》2011年第4期804-809,共6页Chinese Journal of Ecology

基　　金：中国科学院西部行动计划项目(KZCX2-XB2-08);国家支撑计划项目(2009BADC6B008);国家自然科学基金项目(41071340)资助

摘　　要：生态系统服务功能重要性评价对于明确区域生态系统服务功能空间分布规律,进行生态功能区划有重要意义。本文根据桂西北喀斯特地区的主要生态系统服务功能,选取生物多样性保护、土壤保持、水源涵养、石漠化控制和产品提供5项服务功能,采用层次分析法和多因子综合评价法建立指标体系,在GIS技术支持下,分析了5项生态系统服务功能的重要性及其空间分布特征,并进行了综合评价。结果表明:桂西北喀斯特地区生态系统服务功能重要性程度较高,其中极重要、中等重要地区面积占研究区总面积分别为25.2%和33.4%;喀斯特地区生态系统土壤保持功能和石漠化控制功能对喀斯特区域生态环境具有重要控制作用,其分布区域是桂西北喀斯特地区生态环境治理和生态恢复的重点区域;明确了桂西北喀斯特地区生态系统生物多样性保护功能、水源涵养功能及产品提供功能的重要性等级及空间分布特征,为喀斯特地区生态系统的科学管理和生态功能区划提供重要依据。The assessment of ecosystem service importance is of significance for understanding the spatial distribution pattern of regional ecosystem services and carrying out ecosystem service regionalization.Based on the primary ecosystem services in Hechi of Northwest Guangxi,five basic ecosystem services（biodiversity protection,soil conservation,water resources conservation,rocky desertification control,and products supply）were selected,and an indices system was established by using analytic hierarchy process and multi-factor comprehensive evaluation.With the support of GIS technology,the importance and spatial distribution pattern of the five main ecosystem services were comprehensively assessed.In the study area,the importance of ecosystem services was at a higher level.About 25.2% and 33.4% of the total area had high and medium levels of ecosystem service importance,respectively.In the area,soil conservation and rock desertification control acted as the crucial functions in environmental protection,and the regions with these services were the key regions for ecological protection and restoration.The importance degree and spatial distribution pattern of biodiversity protection,water resources conservation,and products supply were also confirmed.This study could provide reasonable references for ecosystem management and ecological function regionalization in karst areas.

关 键 词：喀斯特 生态系统服务功能 桂西北 空间分布 

分 类 号：X171[环境科学与工程—环境科学]