Spatial-temporal Variation of Land Cover Change and Its Causes in Guangdong Province from 1992 to 2015

Gu Hui; Tang Guoping; Jiang Tao; Fang Hong; Tang Xianyun; Chen Xiaohua

doi:10.13961/j.cnki.stbctb.2020.02.042

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Spatial-temporal Variation of Land Cover Change and Its Causes in Guangdong Province from 1992 to 2015

- Spatial-temporal Variation of Land Cover Change and Its Causes in Guangdong Province from 1992 to 2015
- Bulletin of Soiland Water Conservation Vol. 40, Issue 2, Pages: 291-298(2020)
- 作者机构：
  
  中山大学地理科学与规划学院,广东,广州,510275
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.02.042
  CLC： F301.24
- Published：2020
- 稿件说明：
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Gu Hui, Tang Guoping, Jiang Tao, et al. Spatial-temporal Variation of Land Cover Change and Its Causes in Guangdong Province from 1992 to 2015[J]. Bulletin of Soiland Water Conservation, 2020, 40(2): 291-298.
DOI：

Gu Hui, Tang Guoping, Jiang Tao, et al. Spatial-temporal Variation of Land Cover Change and Its Causes in Guangdong Province from 1992 to 2015[J]. Bulletin of Soiland Water Conservation, 2020, 40(2): 291-298. DOI： 10.13961/j.cnki.stbctb.2020.02.042.

摘要

[目的] 从地形和社会经济两个因素出发探讨广东省土地覆被变化的时空差异及成因，为土地资源的可持续利用提供依据。[方法] 基于1992-2015年间广东省土地覆被数据，使用土地利用动态度、土地利用转移矩阵、灰色关联分析等方法量化土地覆被变化的时空特征与差异。[结果] 广东省土地覆被变化以2000年为节点可分为前期（1992-2000年）和后期（2000-2015年）两个阶段。前期耕地面积显著增加，建筑用地面积增速缓慢；后期耕地面积减小，建筑用地面积扩张迅速。地形因素造成土地覆被变化存在空间差异性。在高程低，坡度缓的区域土地覆被变化主要是耕地转化为建筑用地，而在坡度中等区域主要是林地转为耕地。社会经济因素造成土地覆被变化呈现较明显时间差异性，多种因子驱动广东省土地覆被发生变化。但对于不同的土地覆被类型，驱动因子前后期的关联度大小不同，土地覆被发生变化是多种因子驱动叠加的结果。[结论] 地形因素会造成土地覆被变化的空间差异，而社会经济因素导致土地覆被变化的时间差异。

Abstract

[Objective] Based on topography and socioeconomic factors

the temporal and spatial differences and the cause of land cover change in Guangdong Province were studied

in order to provide a basis for the sustainable use of land resources.[Methods] Based on the land cover

topographic and socioeconomic data

we quantified the spatial and temporal variations of land cover change in Guangdong Province from 1992 to 2015. The causes of land cover change were analyzed using the land use dynamic degree

land use transfer matrix and the grey correlation analysis.[Results] Land cover change in Guangdong Province could be divided into two stages with the year of 2000 as the turning point. During the first stage (1992-2000)

the area of cultivated land increased significantly and the construction land increased slowly. During the second stage (2000-2015)

the cultivated land decreased while the construction land expanded rapidly. In areas with low elevation and gentle slope

land cover changes were mainly from cultivated land to construction land

while in areas with medium slope

it was mainly from forest land to cultivated land. In comparison

the land cover change caused by social and economic factors showed time difference

and many factors drove the land cover change in Guangdong Province. However

for different land cover types

the correlation degree of driving factors was different in the early and later stages

and the change of land cover was the result of multiple factors driving superposition.[Conclusion] The topographic feature is responsible for the spatial variation of land cover change

while the socioeconomic development plays a dominant role in temporal variation of land cover change in Guangdong Province.

关键词

Keywords

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