Spatial and Temporal Evolution of Cultivated Land in Hehuang Valley During 1990-2018

Wan Fang; Deng Qinghai; Liu Li; Li Ping; Yang Xin

doi:10.13961/j.cnki.stbctb.20210527.001

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Spatial and Temporal Evolution of Cultivated Land in Hehuang Valley During 1990-2018

- Spatial and Temporal Evolution of Cultivated Land in Hehuang Valley During 1990-2018
- Bulletin of Soiland Water Conservation Vol. 41, Issue 3, Pages: 275-282(2021)
- 作者机构：
  
  山东科技大学地球科学与工程学院,山东,青岛,266590
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.20210527.001
  CLC： F301.21
- Published：2021
- 稿件说明：
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Wan Fang, Deng Qinghai, Liu Li, et al. Spatial and Temporal Evolution of Cultivated Land in Hehuang Valley During 1990-2018[J]. Bulletin of Soiland Water Conservation, 2021, 41(3): 275-282.
DOI：

Wan Fang, Deng Qinghai, Liu Li, et al. Spatial and Temporal Evolution of Cultivated Land in Hehuang Valley During 1990-2018[J]. Bulletin of Soiland Water Conservation, 2021, 41(3): 275-282. DOI： 10.13961/j.cnki.stbctb.20210527.001.

摘要

[目的] 研究河湟谷地的耕地变化，为研究河湟谷地土地利用现状、农业发展规划、耕地可持续利用和生态环境保护等提供依据，也为全球耕地变化研究提供参考。[方法] 采用遥感影像处理、空间统计学并结合ArcGIS空间分析等方法多角度地对河湟谷地的耕地格局进行分析，得到1990—2018年河湟谷地耕地时空演变规律，分析了耕地空间变化与海拔、坡度等特殊因子的关系。[结果] 1990—2018年河湟谷地耕地格局有明显变化，耕地面积有所增加，1990—2000年耕地增长速度比较平稳；2000年以后，耕地开垦速度加快，向着高坡度地区发展，出现了更多的坡耕地；2010年后耕地继续向着高海拔地区发展，坡耕地的增加速度有减缓的趋势。[结论] 1990—2018年河湟谷地的新增耕地向着高海拔、高坡度地区发展，耕地重心向西北偏移。

Abstract

[Objective] The cultivated land changes in the Hehuang Valley were studied in order to provide a basis for the study of the current situation of land use

agricultural development planning

sustainable utilization of cultivated land

and ecological environmental protection in the Hehuang Valley

and to provide references for the study of global cultivated land changes. [Methods] Remote sensing image processing

spatial statistics

and ArcGIS spatial analysis were used to analyze the pattern of cultivated land in the Hehuang Valley from multiple angles. The spatial-temporal evolution law of cultivated land in the Hehuang Valley from 1990 to 2018 was obtained. The relationship between the spatial change of cultivated land and special factors such as altitude and slope were analyzed. [Results] There was a significant change in the pattern of cultivated land in the Hehuang Valley from 1990 to 2018

and the cultivated land area increased. The growth rate of cultivated land was relatively stable from 1990 to 2000. After 2000

the rate of cultivated land reclamation accelerated

and more sloping cultivated land was developed towards the high slope area. After 2010

the cultivated land continued to develop towards the high altitude areas

and the increased rate of sloping farmland cultivation had a tendency to slow down. [Conclusion] From 1990 to 2018

the newly added cultivated land in the Hehuang Valley was reclaimed towards the high-altitude and high-slope areas

and the center of cultivated land shifted to the northwest.

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