基于生态系统服务价值重构的生态安全格局构建--以重庆两江新区为例

发布时间：2018-03-15 05:08

本文选题：生态系统服务价值　切入点：生态系统服务重要度　出处：以重庆两江新区为例　论文类型：期刊论文

【摘要】：生态系统服务是生态安全的前提和保障,各项服务价值变化率和集聚水平的差异,均会影响生态源地的识别结果。在对重庆两江新区生态系统服务静态价值估算的基础上,以生态系统服务价值重要度指数和空间丰富度指数,对2012年的生态系统服务静态价值进行重构,并依据重构结果建立三种安全水平上的生态安全格局。结果表明:(1)各项生态系统服务静态价值量逐年降低,其中以食物生产、土壤形成与保护和碳固定三项服务降速最快。(2)重构后生态系统服务价值范围在201~23634元/hm~2之间,且大部分区域以中低值为主。(3)低、中、高三种安全水平源地面积分别为174.73 km~2、208.69 km~2和222.20 km~2。基于生态系统服务价值的多水平生态安全格局,是城市开发和建设用地布局的重要依据。
[Abstract]:Ecosystem service is the premise and guarantee of ecological security. The difference of the rate of change of service value and the level of agglomeration will affect the identification result of ecological source. Based on the estimation of static value of ecosystem service in Liangjiang New area of Chongqing, In 2012, the static value of ecosystem services was reconstructed by using ecosystem service value importance index and spatial richness index. The results show that the static value of ecosystem services decreases year by year, in which food production is used. Soil formation and conservation and carbon sequestration are the three services with the fastest decreasing rate. (2) the value range of ecosystem services after reconstruction is between 201 ~ 23634 yuan / hm ~ (2), and most of the areas are mainly middle and low value. The source areas of the three types of safety level are 174.73 km~2 and 222.20 km / km~2, respectively. The multi-level ecological security pattern based on ecosystem service value is an important basis for urban development and layout of construction land.
【作者单位】：北京大学深圳研究生院城市人居环境科学与技术重点实验室;北京大学城市与环境学院地表过程与模拟教育部重点实验室;中国城市规划设计研究院;
【基金】：国家自然科学基金项目(41330747)
【分类号】：X321

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