地理研究 ›› 2020, Vol. 39 ›› Issue (1): 103-114.doi: 10.11821/dlyj020181021

• 论文 • 上一篇    下一篇

基于变化轨迹分析方法的生态用地流失空间关联研究

刘金雅1, 汪东川1,2, 孙然好3(), 汪翡翠1, 胡炳旭1, 陈俊合1, 孙志超1   

  1. 1. 天津城建大学地质与测绘学院,天津 300384
    2. 天津城建大学,天津市土木建筑结构防护与加固重点实验室,天津 300384
    3. 中国科学院生态环境研究中心,城市与区域生态国家重点实验室,北京 100085
  • 收稿日期:2018-09-25 修回日期:2018-12-20 出版日期:2020-01-20 发布日期:2020-03-20
  • 通讯作者: 孙然好
  • 作者简介:刘金雅(1993-),女,天津市人,硕士,主要从事土地利用变化监测和景观格局动态模拟。E-mail:307374284@qq.com
  • 基金资助:
    国家自然科学基金重大项目(41590843)

Study on spatial relevance of ecological-land loss based on change trajectory analysis method

LIU Jinya1, WANG Dongchuan1,2, SUN Ranhao3(), WANG Feicui1, HU Bingxu1, CHEN Junhe1, SUN Zhichao1   

  1. 1. School of Geology and Geomatics, Tianjin Chengjian University, Tianjin 300384, China
    2. Tianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin Chengjian University, Tianjin 300384, China
    3. State Key Laboratory of Urban and Regional Ecology, Research Center of Eco-Environmental Sciences, CAS, Beijing 100085, China
  • Received:2018-09-25 Revised:2018-12-20 Online:2020-01-20 Published:2020-03-20
  • Contact: SUN Ranhao

摘要:

针对现有研究割裂了生态用地流失这一基本变化过程的不足,本文基于变化轨迹分析方法,从过程完整性角度探求了京津冀城市群地区生态用地流失的空间关联特征。结果表明:① 京津冀城市群地区土地利用变化主要表现为林地、草地、水域和耕地的流失,流失面积的40%转为人工表面;② 林地、草地和水域流失的空间自相关性随空间尺度增大而增强,7 km×7 km空间尺度上3种生态用地流失空间正相关性较强,且随距离阈值增加而降低;③ 距离阈值为10 km时,林地、草地流失高发区集中分布在京津冀西北部地区,水域流失高发区集中分布在东部渤海湾附近,生态环境保护应从京津冀协同发展角度,打破区域发展不均衡,促进京津冀城市群全面发展。

关键词: 变化轨迹分析, 空间自相关分析, 生态用地流失, 京津冀协同发展

Abstract:

In view of the shortcomings of the existing research which has split the basic change process of ecological land loss. Based on the land use data of the Beijing-Tianjin-Hebei urban agglomeration in 1984, 2000 and 2015, the trajectory analysis method was used in this paper to identify the temporal and spatial dynamics of land use change in the study area. In other words, the spatial correlation characteristic of ecological land loss in the Beijing-Tianjin-Hebei urban agglomeration was explored from the perspective of process integrity. On this basis, the spatial autocorrelation analysis method was used to explore the spatial autocorrelation pattern of forest loss, grassland loss and water loss at different scales, and find out the high-incidence area of ecological land loss in this region. At the same time, from the perspective of the integration of the eco-environment of the urban agglomeration, the exploratory suggestions or countermeasures against the loss of ecological land use was proposed. The results showed that (1) From 1984 to 2015, the main changes in land use of the study area were the loss of forest, grassland, water and farmland, and 40% of the lost area turned into artificial surface. (2) The spatial autocorrelation of forest loss, grass loss, and water loss increased with increasing spatial scale. In the 7 km × 7 km spatial scale, There was a strong spatial positive correlation between the three types of ecological land loss, and the spatial positive correlation gradually decreased with the increase of the distance threshold. (3) Under the distance threshold of 10 km, the high incidence areas of forest loss and grassland loss were concentrated in the northwestern part of Beijing-Tianjin-Hebei urban agglomeration, and the high incidence areas of water loss were concentrated near the eastern Bohai Bay. From the perspective of coordinated development of the study area, the eco-environmental protection should resolve differences and unbalanced development and promote the integrated development of this urban agglomeration.

Key words: the change trajectory analysis, spatial autocorrelation analysis, ecological land loss, coordinated development of Beijing-Tianjin-Hebei urban agglomeration