基于山江海视角与SRP模型的桂西南-北部湾生态环境脆弱性评价  

Ecological Environment Vulnerability Assessment of Southwest Guangxi-Beibu Gulf Based on the Perspective of Mountains,Rivers and Sea and SRP Model

作　　者：张泽 胡宝清 丘海红 邓雁菲 ZHANG Ze;HU Baoqing;QIU Haihong;DENG Yanfei(Nanning Normal University,Key Laboratory of Environment Change and Resources Use in Beibu Gulf,Ministry of Education,Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation,Nanning 530001,China;School of Geography and Planning,Nanning normal university,Nanning 530001,China)

机构地区：[1]南宁师范大学北部湾环境演变与资源利用教育部重点实验室/广西地表过程与智能模拟重点实验室,南宁530001 [2]南宁师范大学地理科学与规划学院,南宁530001

出　　处：《地球与环境》2021年第3期297-306,共10页Earth and Environment

基　　金：国家自然科学基金重点项目(41930537);广西创新研究团队项目(2016GXNSFGA380007);广西科技基地与人才专项(桂AD19110142)。

摘　　要：为揭示桂西南喀斯特-北部湾海岸带生态环境脆弱性,本研究基于山江海视角,采用生态敏感度-生态恢复力-生态压力度(SRP)模型、无纲量化模型、层次分析法,结合生态环境脆弱性指数,对该区域进行了生态环境脆弱性的评价,为该区域的生态环境治理和恢复提供科学的理论基础和技术指导。结果表明:(1)2000~2018年三期生态环境脆弱性指数在0.14~0.96之间,平均值在0.52,整体属于中度脆弱。2000年轻度脆弱区面积比重最大为44.96%,中度脆弱区面积其次,重度脆弱区面积最小;2010年轻度脆弱区和中度脆弱区的面积比重相似,潜在脆弱区面积和重度脆弱区面积减少;2018年仍然是轻度脆弱区比重最大,重度脆弱区面积增加1736 km^(2)。(2)随着高程的增加,生态环境脆弱性程度整体有减轻的趋势,重度脆弱比重越来越小。(3)林地主要分布于微度脆弱区和轻度脆弱区,耕地、水域、建设用地和未利用地主要分布在轻度脆弱区,草地主要在微度脆弱区和轻度脆弱区。The ecological environment vulnerability of Southwest Karst-Beibu Gulf coastal Zone of Guangxi was assessed based on a mountains,rivers,and sea perspective,by using the ecological sensitivity-ecological restoration-ecological pressure(SRP)model,a dimensionless quantitative model,analytic hierarchy process,as well as the combination of the ecological environment vulnerability index,the results would provide scientific theoretical basis and technical guidance for the regional ecological environment governance and restoration.It showed that:(1)the ecological environment vulnerability index of the third period from 2000 to 2018 ranged from 0.14 to 0.96,and the average value was 0.52,indicating moderate vulnerability on the whole.In 2000,the proportion of slight vulnerability grade was 44.96%,followed by moderate vulnerability grade,and the area of severe vulnerability grade was the smallest.In 2010,the proportions of sligh vulnerability and moderate vulnerability were similar,and the areas of potential vulnerability and severe vulnerability were reduced.In 2018,the proportion of mildly vulnerable areas was still the largest,and the area of severely vulnerable areas increased by 1736 km^(2).(2)With the increase of elevation,the degree of ecological environment vulnerability tends to decrease on the whole,and the proportion of severe vulnerability becomes smaller and smaller.(3)Forestland is mainly distributed in micro-fragile areas and mildly fragile areas;arable land,water area and construction land are mainly slightly fragile;grassland is mainly in micro-fragile and mildly fragile.

关 键 词：山江海视角 生态敏感度-生态恢复力-生态压力度(SRP)模型 生态环境脆弱性 桂西南喀斯特-北部湾海岸带 

分 类 号：X826[环境科学与工程—环境工程]