干旱区研究

干旱区研究 ›› 2012, Vol. 29 ›› Issue (1): 137-142.

• 生态与环境 • 上一篇    下一篇

咸阳市土地利用变化及生态风险

蒙晓,任志远,张翀   

  1. 陕西师范大学 旅游与环境学院，陕西 西安 710062
  • 收稿日期:2010-11-29 修回日期:2011-03-30 出版日期:2012-01-15 发布日期:2012-02-27
  • 通讯作者: 任志远. E-mail：renzhy@snnu.edu.cn
  • 作者简介:蒙晓（1987-），女，陕西咸阳人，在读研究生，研究方向为资源环境RS与GIS. E-mail：mengqingsen1987@163.com
  • 基金资助:

    教育部人文社会科学重点研究基地重大项目（2009JJD770025）；国家自然科学基金（41071057）

Study on Land Use Change and Ecological Risk in Xianyang City

MENG Xiao,REN Zhi-yuan,ZHANG Chong   

  1. College of Tourism and Environment Science, Shaanxi Normal University, Xi'an 710062, China
  • Received:2010-11-29 Revised:2011-03-30 Online:2012-01-15 Published:2012-02-27

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被引次数

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摘要： 基于1990年与2007年2期土地利用遥感数据，采用RS，GIS技术和统计分析方法，对咸阳市1990-2007年的土地利用变化状况进行了分析，在此基础上，研究了由土地利用变化引起的咸阳市生态风险问题。结果表明：① 17 a间咸阳市土地利用整体呈现耕地面积和未利用地面积减少，林地、草地、建设用地面积增加的趋势；② 生态风险指数随着土地利用的变化呈现上升趋势，生态风险指数从1990年的0.130 8到2007年的0.131 9。伴随着经济快速发展和城市化进程的加快，土地利用趋于破碎化，使得土地生态风险程度明显增大。

关键词: 土地利用, 生态风险, 咸阳, 陕西

Abstract: In this paper, the LUCC in Xianyang City during the period from 1990 to 2007 was analyzed using the RS and GIS means and statistical analysis based on the remote sensing data of land use in the city in 1990 and 2007. On which the ecological risk caused by LUCC in the city was researched. The results are as follows: (1) Area of farmland and unused land was holistically reduced in recent 17 years, but that of woodland, grassland and land for construction was enlarged; (2) Ecological risk index was in an increase trend with land use change during the period from 1990 to 2007, and it was increased from 0.130 8 in 1990 to 0.131 9 in 2007. It is predicted that land fragmentation will become more serious with rapid economic development and urbanization, and the ecological risk in the city will be continuously increased in the future.

Key words: LUCC, ecological risk, Xianyang City, Shaanxi Province