资源型城市耕地利用时空变化及其驱动力因子研究--以甘肃省白银市为例

On Spatial and Temporal Changes and Driving Factors of Cultivated Land Usein Resource-based Cities:A Case Study of Baiyin City in Gansu Province

以甘肃省白银市为例,定量化研究资源型城市耕地利用变化及驱动力因子。利用2009-2019年白银区土地调查数据,通过土地利用动态度、地理探测器方法分析研究期内耕地时空特征及其驱动力因子。结果显示2009-2019年,白银区耕地面积总体增加,耕地种植类型以种植粮食作物和未耕种为主;水浇地面积变化呈增加趋势,旱地面积略有下降。低坡度区[0°,6°]的耕地面积均有不同程度的上升,高坡度区(≥6°)的耕地面积均呈下降趋势。研究期内,白银区耕地空间分布并未出现明显的变化。各时期驱动因子对耕地空间分异的解释力及显著性存在差异性。社会经济因素之间的交互作用表现为双因子增强,自然环境因素间的交互作用表现为非线性增强和双因子增强。

Taking Baiyin city of Gansu province as an example,this paper quantitatively studied the spatial and temporal changes and driving factors of cultivated land use in resource-based cities.Based on the land survey data of Baiyin city,this study analyzed the spatio-temporal differentiation characteristics and driving factors of cultivated land changes in Baiyin city from 2009 to 2019 by using land-use dynamic degree and Geo-Detector.The results were shown as follows:the cultivated land area in Baiyin city had increased from 2009 to 2019,and crop land and unused land were two main types of cultivated land;irrigated land area showed an increasing trend and dry land area showed a slight decrease.The cultivated land had increased in different lower slope areas,and decreased in all higher slope areas.The spatial distribution of cultivated land steadily evolved in the studied area from 2009 to 2019.The explanatory power and significance of driving factors on the spatial differentiation of cultivated land were different in each period.The interaction between socioeconomic factors was characterized by two-factor enhancement,while the interaction between natural environmental factors was characterized by two-factor enhancement and nonlinear enhancement.