基于土地利用空间格局的区域生态系统健康评价——以舟山岛为例  

Regional ecosystem health assessment based on land use pattern:a case of study of Zhoushan Island

作　　者：陆丽珍[1] 詹远增[1,2] 叶艳妹[1] 陈建裕[2] 牟永铭[3] 

机构地区：[1]浙江大学地球科学系,杭州310027 [2]国家海洋局第二海洋研究所卫星海洋环境动力学国家重点实验室,杭州310012 [3]浙江省环境监测中心,杭州310012

出　　处：《生态学报》2010年第1期245-252,共8页Acta Ecologica Sinica

基　　金：国家自然科学基金资助项目(70673087);浙江省自然科学基金资助项目(Y505245)

摘　　要：土地利用空间格局是影响区域生态系统健康状态的重要因素。构建适用于舟山岛生态系统健康诊断的"活力-组织结构-恢复力-生态系统服务功能"评价指标体系,其活力以植被相对密度指数表征、组织结构以蔓延度等4个景观格局指数表征。选择镇、乡或街道等行政区作为评价单元,以遥感数据和土地利用调查数据为基础,采用G IS和RS技术,提取舟山岛17个乡镇1970-2005年间5个时期的土地利用空间格局和指标信息,采用综合参数评价模型对研究区生态系统健康进行时空动态评价。研究结果表明:(1)35 a来舟山岛生态系统健康整体状况呈下降趋势,相对较好的区域面积下降了18%,相对一般的下降了8%,而相对较差的上升了26%;(2)城市化、滩涂围垦与沿海工业的发展是舟山岛生态系统健康状态下降的主要原因。Land use pattern is one of the important factors influencing regional ecosystem health.An assessment index system of ＂vigor-organization-resilience-service＂ was built to diagnose the regional ecosystem health of Zhoushan Island.Of which,the vigor index was represented by relative density of vegetation,and organization index was indicated by four indices of landscape pattern,including contagion,Shannon′s diversity,Shannon′s evennesss,and ineterfusion juxtaposition.The administrative units of town,township or subdistrict were taken for evaluation.Based on remote sensing images and land-use-survey data,using GIS and RS techonologies,the spatial and temporal dynamics of ecosystem health of Zhoushan in 5 successive periods during 1970-2005 were assessed in terms of the comprehensive parameters evaluation modle.The results showed that the ecosystem health of Zhoushan Island declined in the past 35 years in general.It dropped by 18% and 8% in good and ordinary areas respectively,while increased by 26% in worse area.The main reasons causing the decrease of the ecosystem health of Zhoushan Island were urbanization,beach land reclamation and industrial development.

关 键 词：区域生态系统健康 评价指标体系 土地利用空间格局 舟山岛 

分 类 号：X826[环境科学与工程—环境工程]