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生态学杂志 ›› 2011, Vol. 30 ›› Issue (04): 818-823.

• 综述与专论 • 上一篇    下一篇

北京市平原区不同圈层绿色空间格局及生态服务变化

潘影1,张茜2,甄霖1,宇振荣2**   

  1. 1中国科学院地理科学与资源研究所| 北京 100101;2中国农业大学资源与环境学院| 北京 100193
  • 出版日期:2011-04-08 发布日期:2011-04-08

Green space pattern and ecosystem services value of the sub-regions in Beijing plain area.

PAN Ying1, ZHANG Qian2, ZHEN Lin1, YU Zhen-rong2**   

  1. 1Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China|2College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
  • Online:2011-04-08 Published:2011-04-08

摘要: 基于城市发展特点与绿色空间规划将北京市平原区分成核心城区、第一道绿色隔离带、城市扩展区、第二道绿色隔离带与边缘集团5个圈层。利用多时相遥感影像解译了土地利用及NDVI指数,并在此基础上核算了北京不同圈层1999与2007年的生态服务价值。结果表明:核心城区及第一道绿色隔离带的生态服务价值总量从1999—2007年有所提高,但平原区整体有大幅降低;从城市扩展区向外,耕地与果园地的生态服务价值在整个绿色空间所占比例逐渐升高;北京市平原区生态服务价值减少的58.8%是由于土地利用方式的改变,主要是建设用地侵占农用地与林地;41.2%的减少是由于景观退化,其中主要是农田景观退化,尤其在边缘集团区。在现有土地资源稀缺与城市建设用地扩张压力逐渐增大的情况下,将优质农田纳入绿色空间建设,增强其景观质量与生态服务功能,是提高北京市绿色空间整体生态服务功能的有效途径。

关键词: 土壤含水率, 四川, 栲木荷群系, 演替阶段, 中亚热带

Abstract: Based on the urban development features and green space planning, the plain area of Beijing from the urban center to the fringe was divided into five sub-regions, i.e., central urban area, first green belt, extended urban region, second green belt, and fringe area. The land use pattern and normalized difference vegetation index (NDVI) were interpreted with multi-period remote sensing images, and on this basis, the ecosystem services values of the sub-regions in 1999 and 2007 were calculated. From 1999 to 2007, the total amount of ecosystem services value in the central urban area and first green belt had somewhat increase, but that in the whole plain area had a greater decrease. From the urban center to the fringe, the proportion of the ecosystem services contributed by farmland and orchard increased gradually. The 58.8% loss of the ecosystem services value of the whole plain area was due to the change of land use, mainly the construction land sprawling farmland and woody land. Another 41.2% loss was due to the degrading of landscape quality, mainly the degrading of agricultural landscape, especially in the fringe area. With the scarceness of present land resources and the increasing pressure of construction land enlargement, it would be a promising way to bring good quality farmland into green space planning and to improve the quality and ecosystem services of the farmland to enhance the overall ecosystem services of Beijing green space.

Key words: Percentage of soil absolute moisture content (PSAMC), Sichuan, Castanopsis platyacantha Schima sinensis formation, Succession stage, Central subtropical zone