Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (11): 96-105.doi: 10.11924/j.issn.1000-6850.casb2021-1115

Special Issue: 农业地理 耕地保护

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Terrain Gradient Effects of Land Use Pattern in Fujian Province

ZHANG Ying(), YE Baojian, ZHU Zhipeng, YAO Xiong()   

  1. College of Architecture and Urban Planning, Fujian University of Technology, Fuzhou 350118
  • Received:2021-11-19 Revised:2022-02-08 Online:2022-04-15 Published:2022-05-18
  • Contact: YAO Xiong E-mail:934252021@qq.com;fjyx@fjut.edu.cn

Abstract:

To reveal the temporal and spatial evolution characteristics and laws of terrain gradient of land use pattern in Fujian Province, the land use data in 2000, 2010 and 2018 and digital elevation model (DEM) data were collected as the data source. Land use change atlas, terrain niche index, distribution index and landscape pattern index were used to analyze the terrain gradient change characteristics of landscape atlas, and the terrain gradient effect of land use pattern and its cause were discussed. The results showed that forestland, farmland and grassland were the main landscape types in Fujian Province from 2000 to 2018. Forestland and grassland were mainly distributed in high-level terrain gradient, and farmland was mainly concentrated in low-level terrain gradient. During the study period, the farmland area decreased continuously with an average annual area of 89 km2, and it was mainly turned into construction land. The construction land increased continuously with an average annual area of 145 km2. The stable type was the main landscape change atlas, which accounted for about 94%, and the corresponding distribution index increased with the terrain gradient, while the other atlas types were the opposite. Landscape attributes such as landscape diversity and landscape heterogeneity increased year by year on the temporal scale, but they decreased with the increase of terrain gradient on the spatial scale. This study can provide a scientific basis for the spatial optimization of landscape pattern and the rational development and utilization of land resources in the process of urbanization.

Key words: land use, landscape pattern, distribution index, terrain gradient, geo-information atlas, Fujian Province

CLC Number: