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基于生态系统脆弱性评价的典型岩溶区生态治理分区
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作者 胡兆鑫 罗为群 +2 位作者 蒋忠诚 吴泽燕 汤庆佳 《中国岩溶》 CAS CSCD 北大核心 2024年第3期661-671,703,共12页
文章以广西平果果化石漠化生态修复示范区为研究对象,基于“成因-结果”模型选取7个指标建立生态系统脆弱性评价指标体系,利用GIS技术和层次分析法进行生态系统脆弱性评价,通过单参数分析法计算各评价指标对生态系统脆弱性的贡献率,分... 文章以广西平果果化石漠化生态修复示范区为研究对象,基于“成因-结果”模型选取7个指标建立生态系统脆弱性评价指标体系,利用GIS技术和层次分析法进行生态系统脆弱性评价,通过单参数分析法计算各评价指标对生态系统脆弱性的贡献率,分析造成研究区生态系统脆弱性的主要影响因素。结果表明:研究区微度、轻度、中度、重度和极度脆弱生态系统脆弱性等级面积占比分别为36.43%、33.90%、18.91%、9.34%和1.43%,造成研究区生态系统轻度、中度脆弱的主要因素是岩性和土地利用方式,造成研究区生态系统重度、极度脆弱的主要因素是生态环境退化。依据评价结果,基于土地利用现状,结合坡度、地块面积等条件,划定生态治理分区并制订相应治理措施。其中,封山育林区应禁止一切人为破坏活动;人工造林区可在植被盖度较低的地块种植阳性树种,在植被群落高度较高、盖度适中的地块种植中性和阴性树种;林下种植区可引进赤苍藤、金银花等特色经济植物;草地改良区可引进桂牧一号、菊苣草、甜象草等优质牧草;园地改造区可在现有经果林下套种赤苍藤、金银花等矮杆经济作物;特色经济植物种植区可引进赤苍藤、树仔菜等常绿经济植物;退耕还林区因地制宜造林种草;矿山修复区采用多种技术手段复垦复绿;非治理区保持现状。 展开更多
关键词 岩溶 生态系统脆弱性评价 生态治理分区 果化示范区 环境退化
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福建罗源湾海湾生态系统脆弱性评价 被引量:5
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作者 钟慧琪 鲍姗姗 +4 位作者 韩宇 杨璐 陈明茹 杨圣云 肖佳媚 《应用海洋学学报》 CSCD 北大核心 2017年第1期16-23,共8页
本研究以"暴露程度-敏感性-适应能力"为框架,构建了罗源湾海湾生态系统脆弱性评价指标体系,并运用模糊综合评价法对罗源湾海湾生态系统在1986~1990、2004~2006、2010~2012年三个阶段的脆弱性状况开展了定量评价,结果显示,罗... 本研究以"暴露程度-敏感性-适应能力"为框架,构建了罗源湾海湾生态系统脆弱性评价指标体系,并运用模糊综合评价法对罗源湾海湾生态系统在1986~1990、2004~2006、2010~2012年三个阶段的脆弱性状况开展了定量评价,结果显示,罗源湾海湾生态系统在三个阶段均处于"中度脆弱"水平,综合评价得分逐年上升,呈现渐脆弱趋势.三个子系统的模糊评价结果表明,罗源湾海湾生态系统面临的暴露程度不断增大,其主要人为胁迫因子为滩涂围垦面积、临港工业发展和海水养殖密度;其次,罗源湾海湾生态系统的敏感性也越来越强,主要的敏感因子有海洋生物质量综合指数、浮游动物和潮间带底栖生物多样性指数和鱼卵仔稚鱼种类与密度;与此同时,适应能力则呈较好态势.研究结果可为相似区域海湾生态系统脆弱性评价提供参考. 展开更多
关键词 海洋环境科学 海湾生态系统 生态系统脆弱性评价 模糊综合评价 罗源湾
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Geographical Impact and Ecological Restoration Modes of the Spatial Differentiation of Rural Social-Ecosystem Vulnerability:Evidence from Qingpu District in Shanghai
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作者 REN Guoping LIU Liming +3 位作者 LI Hongqing SUN Qian YIN Gang WAN Beiqi 《Journal of Resources and Ecology》 CSCD 2021年第6期849-868,共20页
Vulnerability research is the core issue and one of the research hotspots of sustainable development science.Vulnerability and its evaluation framework provide a new perspective for rural social-ecosystem studies.This... Vulnerability research is the core issue and one of the research hotspots of sustainable development science.Vulnerability and its evaluation framework provide a new perspective for rural social-ecosystem studies.This paper introduced the‘input-output’efficiency theory and constructed the‘SEE-PSR’framework for the analysis of social-ecosystem vulnerability in the rural area in Qingpu District of Shanghai City.The DEA models,spatial autocorrelation model,multivariate logistic regression model,geographical detector and hierarchical cluster model were used to analyze the spatial differences of social-ecosystem vulnerability,and its geographical impact mechanisms and ecological restorations,in 184 administrative villages in this area.The results can be divided into three main points.(1)The results of the‘input-output’efficiency model of the EW-DEA based on entropy weight aggregation crossover was more reliable and accurate for the evaluation of rural social-ecosystem vulnerability.The vulnerability of the social-ecosystems in the administrative villages showed a trend of gradual decline from east to west,with an average value of vulnerability of 0.583,and the vulnerability of social systems had become an important factor in constraining the decrease of the vulnerability of the social-ecosystems in the region.(2)The distances from the center of Shanghai City,from Dianshan Lake,from the center of Qingpu District and from the water area were the four dominant geographical factors affecting the vulnerability of the social-ecosystem in this region.The geographical impacts exhibited the spatial differentiations of systemic structure,the substitution of typological attributes and the transformation level.(3)The geographical factors coupling the impact types of the social-ecosystem vulnerability were divided spatially into 10 types.The geographic multi-factor coupling impact types were dominant,which presented multi-cyclic spatial patterns and were dominated by the central multi-factor which was surrounded by the single factor types on both sides.According to the different types,some feasible ways of ecological restoration were proposed,which drew on the experiences of integrated territory consolidation to remediate the vulnerability of rural social-ecological systems.The results of this study can provide scientific reference for rural spatial reconstruction,regional ecological restoration and sustainable development for the regions characterized by conflict in the‘strict protection of the ecological environment and vigorous development of the economy’. 展开更多
关键词 social-ecological system vulnerability evaluation efficiency geographical factors geographical impact modes ecological restoration Qingpu District
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