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[1]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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Relationship Between the Land Use Change and the Terrain Gradient in Counties in the Loess Hilly and Gully Region

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 04 Page number: 331-337 Column: Public date: 2016-04-28

Title:: Relationship Between the Land Use Change and the Terrain Gradient in Counties in the Loess Hilly and Gully Region

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

Keywords:: land use change; terrain niche; distribution index; Pengyang County

CLC:: F301

DOI:: -

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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