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• 研究报告 • 上一篇    下一篇

“两屏三带”生态系统格局变化及其影响因素

王晓峰1,2*,勒斯木初1,张明明1   

  1. 1长安大学地球科学与资源学院, 西安 710054;2陕西省土地工程重点实验室, 西安 710054)
  • 出版日期:2019-07-10 发布日期:2019-07-10

Ecosystem pattern change and its influencing factors of “two barriers and three belts”.

WANG Xiao-feng1,2*, LESImu-chu1, ZHANG Ming-ming1   

  1. (1School of Earth Sciences and Resources, Chang’an University, Xi’an 710054, China; 2Shaanxi Provincial Key Laboratory of Land Engineering, Xi’an 710054, China).
  • Online:2019-07-10 Published:2019-07-10

摘要: “两屏三带”生态屏障区是国家生态安全战略格局的重要组成部分,深入认识和探讨屏障区生态系统类型时空分布和转化机理对屏障区可持续发展,建设生态文明具有深远意义。基于2000年、2005年、2010年和2015年土地利用数据,运用生态系统格局变化分析方法、土地转移矩阵、PNTIL模型、地理探测器等模型,综合分析2000—2015年屏障区生态系统类型时空演变特征,探讨生态系统正向/逆向转化的影响因素。结果表明:2000—2015年生态系统变化过程中城市扩张、农用地变化现象最为显著;屏障区生态系统逆向转化率略高于正向转化率;屏障区生态系统逆向转化具有明显的人口发展、经济发展和工业发展指向,自然环境因素对生态系统正向转化的影响力明显大于社会经济要素;社会经济要素与生态系统逆向转化呈显著正相关,但与正向转化率之间不存在明显的相关关系。自然环境要素作为生态系统变化的“天然约束力”,对生态系统正向/逆向转化有显著的相关性。

关键词: 归一化植被指数, 新疆地区, 滑动偏相关, 气候变化, 植被活动

Abstract: The “two barriers and three belts” is an important part of China’s national ecological security strategic pattern. Understanding the spatialtemporal distribution and transformation of ecosystem types in the barrier is important for the sustainable development of the barrier and the construction of ecological civilization. Based on the land use data of 30m resolution in 2000, 2005, 2010 and 2015, the spatial and temporal changes of ecosystem types in barrier areas from 2000 to 2015 were analyzed by the methods of ecosystem pattern change analysis, land transfer matrix, PNTIL model and geographical detectors model. Furthermore, the influencing factors of forward/reverse transformation of ecosystems were discussed. Urban expansion and agricultural land change were the most significant phenomena in the process of ecosystem change from 2000 to 2015. The negative conversion rate of ecosystems in barrier was slightly higher than the positive conversion rate. The negative transformation of ecosystems in barrier had obvious directions of population development, economic development and industrial development. The impacts of natural environmental factors on the positive transformation of ecosystems were significantly greater than those of socio-economic factors. There was a significantly positive correlation between socio-economic factors and the reverse transformation of ecosystems, but no significant correlation between socio-economic factors and the positive transformation of ecosystems. As the “natural constraining force” of ecosystem changes, the natural environmental factors had a significant correlation with the reverse or positive transformation of ecosystems.

Key words: climate change, moving-windows based partial correlation, Xinjiang Region., normalized difference vegetation index, vegetation activity