[1]庄逐舟,黄秋昊,石云.黄土丘陵区土地利用变化与地形梯度关系研究[J].水土保持研究,2016,23(04):331-337.
　ZHUANG Zhuzhou,HUANG Qiuhao,SHI Yun.Relationship Between the Land Use Change and the Terrain Gradient in Counties in the Loess Hilly and Gully Region[J].Research of Soil and Water Conservation,2016,23(04):331-337.
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黄土丘陵区土地利用变化与地形梯度关系研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年04期 页码: 331-337 栏目: 出版日期: 2016-08-28
Title:
Relationship Between the Land Use Change and the Terrain Gradient in Counties in the Loess Hilly and Gully Region
作者:
庄逐舟1, 黄秋昊1, 石云2
1. 南京大学 地理与海洋科学学院, 南京 210023;
2. 宁夏大学 资源环境学院, 银川 750021
Author(s):
ZHUANG Zhuzhou1, HUANG Qiuhao1, SHI Yun2
1. College of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China;
2. College of Resources and Environment, Ningxia University, Yinchuan 750021, China
关键词:
土地利用变化; 地形位指数; 分布指数; 彭阳县
Keywords:
land use change; terrain niche; distribution index; Pengyang County
分类号:
F301
摘要:
土地利用/土地覆被变化（LUCC）是人类活动与自然环境相互作用最直接的表现形式，是反映人类活动程度的重要因子。以彭阳县为例，应用1995年和2014年25 m×25 m的DEM数据和土地利用现状数据，运用GIS空间分析功能，采用地形位指数以及分布指数定量分析了1995—2014年彭阳县土地利用基于地形梯度的变化特征。结果表明：（1）1995—2014年，彭阳县耕地和未利用地面积大量减少，草地面积大量增加，林地、水域和建筑用地面积均有不同程度的增加；（2）随着地形位的升高，耕地、水域、建筑用地的分布指数逐渐降低，林地和草地的分布指数逐渐升高，未利用地的分布指数先升后降。草地的优势分布区间增加了2个地形位，未利用地的优势分布区间降低了2个地形位；（3）水域的优势度区间集中在低地形位区间，耕地和建筑用地的优势度区间集中于低中地形位区间，林地、草地和未利用地的优势度区间集中于中高地形位区间。
Abstract:
Land-use/cover change (LUCC) is the most direct manifestation of the interaction between human activities and natural environment, and is an important factor to reflect the extent of human activities as well. Based on the DEM data in 1995 and 2014 and the land use status, we quantitatively analyzed the characteristics of land use change based on terrain gradient in Pengyang County with the aid of GIS space analysis and terrain niche index, dispersion index, and the comprehensive index. Firstly, from 1995 to 2014, the area of cultivated land and unused land decreased dramatically. The grassland area, on the other hand, increased significantly, and the area of woodland, water bodies and construction land also showed the increasing trend. Secondly, with the elevation of the terrain niche, the distribution index of cultivated land, water bodies and construction land declined, while areas of woodland and grassland were rising, and the distribution index of unused land first rose then declined. The dominance distribution section of grassland increased two terrain niches, while that of unused land decreased two. Overall, water bodies’ dominance distribution section concentrates at the low position; cultivated land and construction land dominance distribution sections are mainly at the low-to-mid position and woodland, grassland and unused land dominance distribution sections are mainly at high position. Thirdly, compared with the comprehensive index of the extent of land use in 1995, that increased in all terrain niches in 2014. This research can provide the theoretical basis for the optimization of land use pattern and sustainable utilization of land resources in Pengyang County.

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备注/Memo

收稿日期:2015-07-30;改回日期:2015-08-25。
基金项目:国家自然科学基金“基于景观格局变化的黄土高原县域退耕还林还草生态效益评价研究”（41161081）
作者简介:庄逐舟(1992-),男,福建泉州人,研究生,从事GIS应用方面研究。E-mail:zhuangzhuzhou@163.com
通讯作者:石云(1977-),女,宁夏银川人,博士,副教授,长期从事GIS应用教学及研究。E-mail:shiyun@nxu.edu.cn

更新日期/Last Update: 1900-01-01