地理科学进展 ›› 2018, Vol. 37 ›› Issue (12): 1693-1704.doi: 10.18306/dlkxjz.2018.12.011

• 研究论文 • 上一篇    下一篇

太行山淇河流域土地利用变化对生境的影响

任涵(), 张静静, 朱文博, 王丽园, 张立娟, 朱连奇*()   

  1. 河南大学环境与规划学院,河南 开封 475004
  • 收稿日期:2017-12-06 修回日期:2018-09-25 出版日期:2018-12-28 发布日期:2018-12-28
  • 通讯作者: 朱连奇 E-mail:hren_edu@163.com;lqzhu@henu.edu.cn
  • 作者简介:

    作者简介:任涵(1994-),女,河南信阳人,博士研究生,主要从事山地资源与环境研究,E-mail: hren_edu@163.com

  • 基金资助:
    国家重点基础研究发展计划项目(2015CB452702)

Impact of land use change on habitat in the Qihe River Basin of Taihang Mountains

Han REN(), Jingjing ZHANG, Wenbo ZHU, Liyuan WANG, Lijuan ZHANG, Lianqi ZHU*()   

  1. College of Environment and Planning, Henan University, Kaifeng 475004, Henan, China
  • Received:2017-12-06 Revised:2018-09-25 Online:2018-12-28 Published:2018-12-28
  • Contact: Lianqi ZHU E-mail:hren_edu@163.com;lqzhu@henu.edu.cn
  • Supported by:
    National Key Basic Research Program of China, No.2015CB452702

摘要:

山地作为陆地表面的特殊地域单元,地形起伏较大,生态系统较为脆弱,对全球变化信号有放大作用。因此,研究山地土地利用变化对生境质量的影响,对于权衡区域生态保护与发展及土地资源的可持续利用具有重要意义。本文基于InVEST模型,结合土地利用数据,并从地形起伏度视角,对太行山淇河流域2000-2015年生境质量进行研究。结果表明:①2000-2015年期间,淇河流域土地利用变化表现为耕地、林地面积逐渐减少,草地、建设用地面积逐渐增加。②流域整体生境质量较好,平均生境质量指数均超过0.7,且2015年有明显提升。③淇河流域的生境质量变化受地类变化影响较大。耕地、草地、建设用地由于受到过人为干扰的影响,其生境出现不同程度的退化;采伐、毁林开荒等行为导致林地的生境也开始缓慢退化,但由于林地的植被覆盖度较高,抗干扰能力较强,加上逐渐开始对其进行恢复,生境质量水平依然较高。④该流域生境质量在地形起伏度上的分布特征表现为平坦区和微起伏区以一般等级生境质量为主,小起伏区和中起伏区则以高度重要和极重要等级生境质量为主。

关键词: 土地利用变化, InVEST模型, 生境质量, 淇河流域

Abstract:

Mountain areas are ecologically fragile and play an important role in providing ecosystem services and in regional sustainable development. Therefore, it is of great theoretical and practical significance to study the impact of land use change on habitat quality in these areas for balancing regional ecological protection and development. Taking the Qihe River Basin in the southern part of Taihang Mountains as the research area and based on land-use and ecological threat data, this study used the habitat quality module of the InVEST model to analyze the change of habitat quality index of the Qihe River Basin in four periods 2000, 2005, 2010, and 2015 from the aspects of land-use change and topographic relief. The aim of the study was to reveal the influence of land-use change on habitat quality and to explore the spatial distribution pattern of habitat quality, in order to provide a scientific basis for ecological protection and land-use planning in the river basin. The results show that: (1) During 2000-2015, in the Qihe River Basin cultivated land and forest land decreased gradually, and the area of grassland and construction land increased. (2) The overall habitat quality of the river basin was good, and the average value of habitat quality was over 0.7. Habitat quality had been significantly improved by 2015. (3) Change of habitat quality in the Qihe River Basin was greatly influenced by the changes of land-use types. The habitats of cultivated land, grassland, and construction land had degraded to varying degrees due to human disturbances; and the habitats of woodlands began to degrade slowly because of deforestation and land reclamation. However, due to the high vegetation coverage and strong ability to resist disturbances, and the gradual restoration of woodlands, the habitat quality is still high. (4) Moderate habitat quality is dominant in flat and slightly fluctuating areas, while the high and very high grades of habitat quality are dominant in topographically rugged areas.

Key words: land use change, InVEST model, habitat quality, Qihe River Basin