Spatiotemporal Pattern Change of Cultivated Land and Its Driving Forces in Yibin City, Sichuan Province During 1980-2018

Luo Fang; Pan An; Chen Zhongsheng; Wang Youhan

doi:10.13961/j.cnki.stbctb.20210917.001

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Spatiotemporal Pattern Change of Cultivated Land and Its Driving Forces in Yibin City, Sichuan Province During 1980-2018

- Spatiotemporal Pattern Change of Cultivated Land and Its Driving Forces in Yibin City, Sichuan Province During 1980-2018
- Bulletin of Soiland Water Conservation Vol. 41, Issue 6, Pages: 336-344(2021)
- 作者机构：
  
  西华师范大学地理科学学院,四川,南充,637002
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.20210917.001
  CLC： F323.2
- Published：2021
- 稿件说明：
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Luo Fang, Pan An, Chen Zhongsheng, et al. Spatiotemporal Pattern Change of Cultivated Land and Its Driving Forces in Yibin City, Sichuan Province During 1980-2018[J]. Bulletin of Soiland Water Conservation, 2021, 41(6): 336-344.
DOI：

Luo Fang, Pan An, Chen Zhongsheng, et al. Spatiotemporal Pattern Change of Cultivated Land and Its Driving Forces in Yibin City, Sichuan Province During 1980-2018[J]. Bulletin of Soiland Water Conservation, 2021, 41(6): 336-344. DOI： 10.13961/j.cnki.stbctb.20210917.001.

摘要

[目的

]

分析四川省宜宾市耕地时空演化特征及其驱动因素，为区域土地资源管理和农业发展规划提供决策参考。[方法

]

基于土地利用数据和社会经济数据，借助土地利用转移矩阵、核密度分析、景观指数和PLUS模型，探究了宜宾市1980—2018年耕地的时空格局变化特征及其驱动机制。[结果

]

①1980年以来，耕地面积呈持续减少趋势，共减少了247.92 km

，主要转出至建设用地与林地之中。②耕地的空间分布具有明显的差异性，呈“北密南疏”的空间分布格局，且空间密度逐年下降。③耕地的空间聚集程度不断下降，而分散程度持续增加，造成耕地破碎化程度加剧。④人口、GDP、道路等社会经济因素和高程、水域等自然环境因子是影响耕地变化的主要驱动力。[结论

]

在高程、水域等自然因素的限制下，人口、经济和交通条件等社会经济因素共同作用，驱使耕地发生变化，面积持续减少，细碎化程度逐渐增加。

Abstract

[Objective] The spatiotemporal evolution characteristics and its driving factors of cultivated land in Yibin City

Sichuan Province were analyzed

in order to provide support for decision-making in regional land resource management and agricultural development planning.[Methods] Based on land use data and socio-economic data

the characteristics of spatiotemporal pattern change and its driving mechanism of cultivated land in Yibin City from 1980 to 2018 were explored with the help of land use transfer matrix

kernel density analysis

landscape index and PLUS model.[Results] ① The cultivated land area continuously decreased since 1980

with a total reduction of 247.92 km2

mainly transferred to construction land and forest land. ② The distribution of cultivated land had obvious spatial differences

showing a spatial pattern of "more in the north and less in the south"

and its spatial density decreased year by year. ③ The degree of spatial aggregation of cultivated land was continually decreasing

while the degree of dispersion was constantly increasing

resulting in an increase in fragmentation of cultivated land. ④ Socio-economic factors such as population

GDP

roads

and natural environmental factors such as elevation and water are the main driving factors of cultivated land change.[Conclusion] Under the constraints of natural factors such as elevation and water area

socio-economic factors such as population

economy and transportation conditions work together to drive the changes in cultivated land

with a continuous decrease in area and a gradual increase in the degree of fragmentation.

关键词

Keywords

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