城市化进程区农业生态系统正负服务测算——以长安区为例

摘要/Abstract

摘要： 综合测评农业生态系统正负服务，对农业可持续发展、农业生态系统服务管理具有重要意义。采用TM遥感影像、实地调查及社会经济统计数据，应用生态系统服务研究理论与方法、Erdas及ArcGIS10.1软件平台，对负向农业生态系统服务的内涵进行界定，对研究区农业生态系统正负服务进行综合测算及格局分析。结果表明：（1）研究区净生态系统服务价值为33.36×10⁸元，正服务占主导地位。（2）总生态系统正服务在空间呈低、高、中带状分布规律，整体表现出由城镇中心地区向边缘区递增的趋势；负服务呈相反格局；净农业生态系统服务以面、带、点状交错分布，净服务为正值以大面积状分布于林地区域，净服务为负值的以带状、点状分布耕地、园地为主的地区。（3）与只测评生态系统正服务相比，能更客观地反映农业生态系统提供服务的实际能力及对人类的惠益。

关键词: 农业生态系统, 净生态系统服务, 正负生态系统服务, 长安区

Abstract: Agricultural production activities bring benefits and negative effects on human beings,a comprehensive evaluation of agricultural ecological system and servicesis important for agricultural sustainable development and agricultural ecological service management.Based on TM remotely sensed images,field surveys and socioeconomic statistics,this study analyzed the positive and negative services and their patterns in the agro-ecosystem of Chang'an District in Xi'an,Shaanxi Province,China,and defined the concept of the negative agro-ecosystem services,using the theories and methods in the ecological system services research,and Erdasand ArcGIS10.1 software platform.The results showed as follows:(1) The net value of agro-ecosystem services were 33.36×10⁸ Yuan dominated by the positive ecosystem services. (2) From the location perspective,the value of positive ecosystem services formed a pattern of zonal distribution with the lower values in the central areas and higher values in the fringe regions while for the negative ecosystem services,it showed an opposite layout.The net agro-ecosystem services constituted a cross distribution with "surface","belt" and "dot" where the "surface" was referred to the forest land with large area and positive value of net services,and the "belt" was referred to the cultivated land or campus with relatively large area and negative value of net services,and the "dot" was also referred to the cultivated land or campus but with relatively small area and negative value of net services. (3) Compared with the study focused only on the positive services,this study investigated both the positive and negative services of agro-ecosystem services which can better reflect the actual capacity of agro-ecosystem and the benefit to mankind.

Key words: agro-ecosystem, net ayro-ecosystem services, positive and negative ecosystem services, Chang'an District

中图分类号:

S181

张妮, 周忠学. 城市化进程区农业生态系统正负服务测算——以长安区为例[J]. 干旱区地理, 2018, 41(2): 409-419.

ZHANG Ni, ZHOU Zhong-xue. Positive and negative agro-ecosystem services evaluation in urbanizing area:A case study of Chang'an District[J]. 干旱区地理, 2018, 41(2): 409-419.

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