生态与农村环境学报 ›› 2016, Vol. 32 ›› Issue (4): 539-545.doi: 10.11934/j.issn.1673-4831.2016.04.004

• 区域环境与发展 • 上一篇    下一篇

长株潭城市群土地利用/覆被变化对碳效应的影响

李涛1,2, 杨知建1, 甘德欣1, 王志远2, 陈希1,3, 齐增湘2   

  1. 1. 湖南农业大学生物科学技术学院, 湖南 长沙 410128;
    2. 南华大学设计艺术学院, 湖南 衡阳 421001;
    3. 郴州市生物研究所, 湖南 郴州 423000
  • 收稿日期:2015-08-24 出版日期:2016-07-25 发布日期:2016-07-26
  • 通讯作者: 齐增湘 E-mail:610975289@qq.com E-mail:610975289@qq.com
  • 作者简介:李涛(1984-),男,江苏连云港人,讲师,博士生,主要研究方向为环境生态及景观生态学。E-mail:413362361@qq.com
  • 基金资助:

    国家自然科学基金(51478470);湖南省科技计划(2014NK2012)

Influence of Changes in Land Use/Cover on Carbon Effect in Chang-Zhu-Tan Urban Agglomeration

LI Tao1,2, YANG Zhi-jian1, GAN De-xin1, WANG Zhi-yuan2, CHEN Xi1,3, QI Zeng-xiang2   

  1. 1. College of Biological Science and Technology, Hunan Agricultural University, Changsha 410128, China;
    2. College of Design and Art, University of South China, Hengyang 421001, China;
    3. Biological Research Institute of Chenzhou, Chenzhou 423000, China
  • Received:2015-08-24 Online:2016-07-25 Published:2016-07-26

摘要:

基于1990、1995、2000、2005、2010年长株潭城市群土地利用数据及植被类型图、土壤类型图,借助ArcGIS 10.0软件,从土地利用类型的结构、转变方向、转变带来的碳排放强度及碳汇空间分布的区域差异性等方面,分析20 a间研究区土地利用/覆被变化引起的碳效应。结果表明:(1)1990-2010年间,长株潭城市群土地利用类型变化的显著特征为耕地与林地间的相互转变以及耕地、林地向建设用地的转变;(2)长株潭城市群碳效应变化呈倒“U”形趋势,整体碳汇能力减弱,碳效应空间分异明显。与其他区县相比,长沙、株洲、湘潭3市市区及望城县、长沙县这5个区县的土地利用转变碳效应及碳汇能力变化更明显,差异性大,这与区域人口密度及经济发展的不均衡直接相关;(3)可考虑通过限制林地及草地转出、优化土地利用结构及经济布局、防止生境破碎化及生态系统退化等措施来控制土地利用碳排放。

关键词: 长株潭城市群, 土地利用/覆被, 碳效应

Abstract:

The Chang-Zhu-Tan urban agglomeration is one of the most important regions with well-developed socio-economy in the middle reaches of the Yangtze River. The study on carbon effect arising from transformation of land use types is of vital significance to carbon emission management and low carbon space planning in urban areas. Based on the land use data, vegetation type maps and soil type maps of 1990, 1995, 2000, 2005 and 2010 of the Chang-Zhu-Tan urban agglomeration, carbon effects arising from changes in land use/cover over the 20 years in the region were analyzed from the aspects of land use structure, its transformation direction, and consequent variation of carbon emission intensity and spatial distribution of carbon sequestration. Results show that: (1) in the period from 1990 to 2010, the changes in land use in the Chang-Zhu-Tan urban agglomeration were characterized mainly by transformations of cultivated land into wood land and vice versa, and of cultivated land and wood land into construction land; (2) the changes in carbon effect demonstrated a reversed "U-shape" trend, a weakening overall carbon sequestration capacity and distinct spatial differentiation of carbon effect. Compared with other areas, the five areas of the Urban Agglomeration, i.e. Changsha City, Zhuzhou City, Xiangtan City, Wangcheng County and Changsha County, witnessed remarkable changes in carbon effect and carbon sequestration capacity as a result of changes in land use, but the changes varied sharply from area to area, which is thought to be directly related to regional population density and unbalanced development of regional economy; and (3) it is advisable to control and use-triggered carbon emission through limiting alienation of forest land and grassland, optimizing land use structure and economic layout, and preventing fragmentation of habitat and degradation of ecosystem.

Key words: Chang-Zhu-Tan urban agglomeration, land use/cover, carbon effect

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