DONG Shunzhou,ZHAO Yuluan,LI Xiubin.Spatiotemporal Patterns of Land Use Change in Plateau Region Based on the Terrain Gradient—A Case Study in Panxian County, Guizhou Province[J].Research of Soil and Water Conservation,2017,24(02):213-222.
基于地形梯度的高原山地区土地利用格局时空特征——以贵州省盘县为例
- Title:
- Spatiotemporal Patterns of Land Use Change in Plateau Region Based on the Terrain Gradient—A Case Study in Panxian County, Guizhou Province
- 关键词:
- 空间分布; 地形梯度; 地形位指数; 分布指数; 土地利用程度综合指数
- Keywords:
- spatial distribution; terrain gradient; terrain index gradient; distribution index; land utilization comprehensive index
- 分类号:
- F301.24
- 摘要:
- 地形因子在一定程度上制约着土地利用空间格局的形成及变化，高原山地区更为明显。该文选取贵州省盘县作为研究区，运用地学信息图谱理论、地形分布优势指数、地形位指数和土地利用综合程度指数分析了2000—2010年研究区土地利用在地形梯度上的空间分布和内在演变特征。结果表明：研究期间，盘县耕地大幅度减少，林地、草地、建设用地和水域大幅度增加，未利用地不甚明显.不同土地利用时空分布及其变化受地形因子的影响呈现一定的垂直分布特征。低级别区耕地优势位增强，水体优势位出现显著萎缩，中级别区林地和草地优势位基本保持稳定。高级别区林地和草地优势分布范围拉宽，建设用地和水体优势位出现退缩。土地利用图谱以稳定型和前期变化型为主，不同图谱变化类型均是不同级别区耕地向林地、草地及建设用地转化为主要特征。土地利用综合程度指数随地形级别区的增加呈现先下降后趋缓特征。高原山地区土地利用结构调整应充分统筹区域地形结构及土地利用格局垂直梯度特征，对不同土地利用类型优化布局进行因地制宜的安排与协调，实现区域土地资源在空间结构上的合理配置与可持续利用。
- Abstract:
- To a certain extent, terrain factors have effects on the formation and change of land use spatial pattern, especially in plateau region. We selected Panxian County in Guizhou Province as the study area, and used the geological information mapping theory, terrain distribution advantage index, terrain index gradient and land utilization comprehensive index to systematically and quantitatively analyze the spatial distribution and intrinsic evolution characteristics of land use of research area in the topographic gradient in the period from 2000 to 2010. The results showed that during the study period, in Panxian, cultivated land reduced greatly, forestland, grassland, construction land and water bodies increased a lot, change of unused land was not obvious; spatial distribution of different land use types and their changes under the influence of terrain factor had vertical distribution characteristics. Terrain advantage of low level terrain area of cultivated land enhanced, terrain advantage of water body significantly shrinked, in middle level terrain area, terrain advantage of forestland and grassland remained stable. In high level terrain area, distribution range of terrain advantage of forestland and grassland became wide, construction land and water body shrinked. The changes of land use map are given priority to stable type and precancerous change type, different types are the changes of cultivated land to forestland, grassland and construction land conversion as the main characteristic in different terrain areas. The comprehensive land use degree index increased first and then remained stable with the increase of terrain area. Adjustment of land use structure in the plateau region should take full consideration of terrain structure and the vertical gradient of land use structure, optimize the layout of different land use types in arrangement and coordination of adjust measures to local conditions, to realize appropriate arrange and sustainable utilization of land resource on the spatial structure.
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备注/Memo
收稿日期:2016-08-10;改回日期:2016-09-26。
基金项目:国家重点基础研究发展计划（2015CB452706）；国家自然科学基金（41361021）；中国科学院陆地表层格局与模拟重点实验室开放基金项目（GJ-2015-03）；贵州省科学技术基金项目[黔科合J字LKS（2013）17]
作者简介:董顺舟(1988-),男,贵州兴义人,硕士研究生,研究方向,主要从事土地利用规划管理研究。E-mail:1352188223@qq.com
通讯作者:赵宇鸾(1983-),男,江西丰城人,副教授,在站博士后,研究方向,主要从事土地利用与山区发展研究。E-mail:zhaoyl.09b@igsnrr.ac.cn