摘要
城市生态安全格局是景观生态学研究的热点和重点之一,识别源地是构建生态安全格局的首要环节。在总结已有研究中重要斑块识别方法的基础上,提出了结合景观连通性分析、生物多样性服务评估和生境质量评估来提取重要斑块的方法。以深圳市为研究区,采用基于图论的景观连通性指数、生物多样性服务当量、InVEST模型生境质量评估模块和GIS技术相结合的方法识别生态用地重要斑块。结果表明:深圳市生态斑块依照连通性、生物多样性和生境质量的综合评估分为五级,其中最重要斑块主要分布在龙岗区、盐田区和罗湖区;现行基本生态控制线政策可以保护大部分重要斑块。
Urban ecological security pattern is the focus and emphasis of the landscape ecology research,and identifying the source area is the first link to build the ecological security pattern.This paper summarized the existing researches on the recognition methods of the important patches,overall,the commonly used method is relatively simple,which based on the biodiversity as well as the importance of ecosystem services.However,these methods are biased towards considering the structure and function of the patch itself,while ignoring the importance of patches in the entire matrix structure,as well as the relationship with the surrounding environment.Therefore,this paper attempted to propose a comprehensive recognition method of connectivity analysis,biodiversity service evaluation and habitat quality evaluation to recognize the source area of the ecological security pattern. The research area of this paper is Shenzhen City which as China′s opening up window in the south of Guangdong province.With the unconventional high-speed development,Shenzhen has accumulated a large number of ecological and environmental problems,which have threatened the ecological safety in Shenzhen and has become major restrictive conditions to achieving sustainable urban development.Therefore,the ecological protection is urgent.In this paper,both the functions of the ecological patch itself and the structure importance in the landscape pattern were incorporated when recognizing the important patches.Furthermore,as an integrated approach,the landscape connectivity index,the biodiversity service equivalent and the habitat quality evaluation module of the InVEST model were employed to recognize the important ecological patches.The results are as follows： （1） The total area of the source area of the ecological security pattern is 312.10km2,accounting for 15.9% of the total area of the city.The ecological land was divided into five grades in accordance with the landscape connectivity,biodiversity service and habitat quality,the former three gr
出处
《生态学报》
CAS
CSCD
北大核心
2013年第13期4125-4133,共9页
Acta Ecologica Sinica
基金
国家自然科学基金项目(41271195)
关键词
生态安全格局
源地的识别
景观连通性
生物多样性
生境质量
InVEST模型
ecological security pattern
the recognition of the source area
landscape connectivity
biodiversity
habitat quality
InVEST model
