干旱区研究

干旱区研究 ›› 2018, Vol. 35 ›› Issue (1): 235-242.doi: 10.13866/j.azr.2018.01.29

• 生态与环境 • 上一篇    下一篇

基于LUCC的干旱区人为干扰与生态安全分析——以天山北坡经济带绿洲为例

宋文杰, 张清, 刘莎莎, 杨江宁   

  1. 中国科学院遥感与数字地球研究所, 北京 100094
  • 收稿日期:2017-04-11 修回日期:2017-07-12 出版日期:2018-01-15 发布日期:2025-11-16
  • 通讯作者: 张清.E-mail:zhangqing01@radi.ac.cn
  • 作者简介:宋文杰(1993-),女,硕士研究生,研究方向为生态安全研究. E-mail:songwenjie2011@163.com
  • 基金资助:
    中国清洁发展机制基金赠款项目(2014106);国家自然科学基金项目(41771392)资助

LUCC-Based Human Disturbance and Ecological Security in Arid Area: A Case Study in the Economic Zone on Northern Slope of the Tianshan Mountains

SONG Wen-jie, ZHANG Qing, LIU Sha-sha, YANG Jiang-ning   

  1. Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing 100094,China
  • Received:2017-04-11 Revised:2017-07-12 Published:2018-01-15 Online:2025-11-16

PDF (PC)

0

赞

摘要： 基于1965—2015年5期LUCC数据,通过人为干扰度和景观脆弱度构建生态安全度,开展长时间序列、大尺度、高精度的天山北坡经济带绿洲人为干扰和生态安全变化研究。结果表明:① 近50 a,人类对天山北坡经济带绿洲的干扰程度逐年增加,现已达到中度偏强的干扰程度,乌鲁木齐、石河子、奎屯、米泉和昌吉的干扰度高于其他地区。② 近50 a,天山北坡经济带绿洲生态安全度呈先增加后减少的趋势,较不安全和临界等级为主要的生态安全等级,该等级区域逐年增多且向西北方向移动,城市建设、绿洲扩张和过度开垦是生态安全降低的主要因素。③ 结构因素、人类因素、政策因素是天山北坡生态安全变化的驱动因素。从整体来看,天山北坡经济带的生态环境仍存在较大隐患,需要在今后的发展中合理利用土地资源,保证该区域的可持续发展。

关键词: LUCC, 人为干扰, 生态安全, 天山北坡经济带, 绿洲, 干旱区

Abstract: Ecological security is closely related to the people’s survival and development.In the context of global warming,the ecological and environmental problems have become increasingly prominent with the frequent human activities.Oases in arid areas are the regions with vulnerable environment and economy.Study on ecological security of oases in arid areas is of great significance to the economic stability and development of oases.Based on the land use/cover data in 1965,1980,1995,2005 and 2015,the study analyzed the temporal and spatial changes in human disturbance and ecological security of oases in the economic zone on northern slope of the Tianshan Mountains in recent 50 years by establishing the ecological security index through human disturbance index and landscape vulnerability index.The results showed that the human disturbance in the study area in recent 50 years was increased year by year and reached to a moderate-strong degree in 2015.The human disturbance degree in Urumqi,Shihezi,Kuytun,Miquan and Changji was higher than that in other regions.The ecological security in the economic zone on northern slope of the Tianshan Mountains tended an increase firstly and then a decrease in recent 50 years.The unsafe level and critical level were dominant in the economic zone on northern slope of the Tianshan Mountains,and the regions with these levels were increased and shifted northwestward.The ecological security level was low in Karamay,Shawan and Manas County.Urban construction,oasis expansion and excessive land reclamation were the main factors in reducing ecological security.Structure,human activities and policy were the driving factors of ecological security change in the study area.Structural and policy factors affected the large-scale pattern of ecological security,and human factors affected the small-scale one,On the whole,the ecological environment in the economic zone on northern slope of the Tianshan Mountains is currently still in a high hidden danger,and it is necessary to make reasonable use of land resources in the future development so as to ensure a sustainable development of the study area.

Key words: LUCC, human disturbance, ecological security, economic zone on northern slope of the Tianshan Mountains, oasis, arid area