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干旱区地理 ›› 2017, Vol. 40 ›› Issue (3): 614-621.

• 生物与土壤 • 上一篇    下一篇

中国北方农牧交错带城市扩展过程对植被净初级生产力影响研究——以呼包鄂地区为例

丁美慧1,2, 孙泽祥1,3, 刘志锋1,3, 何春阳1,3   

  1. 1 北京师范大学地表过程与资源生态国家重点实验室, 人与环境系统可持续研究中心, 北京 100875;
    2 北京师范大学地理科学学部减灾与应急管理研究院, 北京 100875;
    3 北京师范大学地理科学学部资源学院, 土地资源与区域发展研究中心, 北京 100875
  • 收稿日期:2016-09-22 修回日期:2017-02-15 出版日期:2017-05-25
  • 通讯作者: 刘志锋(1986-),男,江西景德镇人,讲师,博士,主要从事景观可持续科学等方面的研究.Email:Zhifeng.Liu@bnu.edu.cn
  • 作者简介:丁美慧(1991-),女,山东聊城人,硕士研究生,主要从事城市化与景观可持续科学方面的研究.Email:Dingmeihui214@163.com
  • 基金资助:

    国家自然科学基金委青年科学基金项目(41501195);国家重大科学研究计划项目(2014CB954302, 2014CB954303)

Impacts of urban expansion on net primary productivity in the agro-pastoral ecotone in Northern China:a case of Hohhot-Baotou-Ordos region

DING Mei-hui1,2, SUN Ze-xiang1,3, LIU Zhi-feng1,3, HE Chun-yang1,3   

  1. 1 Center for Human-Environment System Sustainability(CGESS), State key Laboratory of Earth Surface Processes and Resource Ecology (ESPRE), Beijing Normal University, Beijing 100875, China;
    2 Academy of Disaster Reduction and Emergenly Management Ministry of Civil Affairs & Ministry of Education, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China;
    3 School of Natural Resourles, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
  • Received:2016-09-22 Revised:2017-02-15 Online:2017-05-25

摘要: 评价中国北方农牧交错带城市扩展过程对植被净初级生产力(Net Primary Productivity,NPP)的影响是揭示区域城市扩展过程生态效应的基础。以正在经历快速城市化的呼包鄂地区为例,基于空间分辨率为30 m的土地利用/覆盖数据,评价了该地区2000-2015 年城市扩展过程对NPP的影响。研究结果表明,呼包鄂地区城市扩展导致NPP明显增加,2000-2015 年城市扩展区域NPP均值从429.67 NDVI·PAR增加到489.71 NDVI·PAR,增加了13.97%。呼包鄂地区以城市土地占用草地为主要特征的城市扩展方式是城市扩展区域NPP增加的主要原因。

关键词: 中国北方农牧交错带, 呼包鄂地区, 城市扩展过程, 植被净初级生产力

Abstract: Assessing the impacts of urban expansion on the Net Primary Productivity(NPP)is essential for understanding the ecological issues caused by urbanization in the drylands in northern China. In this study,we assessed the impacts of urban expansion on NPP in Hohhot-Baotou-Ordos(HBO)region——a rapidly urbanizing area in the drylandsin northern China. Based on the land use/cover map with a resolution of 30 meters,we examined the spatiotemporal patterns of NPP of urban land in HBO duringthe period of 2009-2013,and compared them with those derived from other land cover types. The results showthat the mean NPP of urban land was 572.50 NDVI·PAR,which was 3.81% higher than the regional average. The largest NPP value of urban land,occurring in July,was 123.94 NDVI·PAR,which was 7.33% higher than the regional average. The urban expansion dominated by the conversion from grassland to urban land would increase regional NPP in HBO.

Key words: drylands in northern China, Hohhot-Baotou-Ordos(HBO)region, urban expansion, net primary productivity(NPP)

中图分类号: 

  • Q948.12