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陇中黄土丘陵区土地利用功能时空演变及影响因素
1, 1, 1, 1, 2, 1

(1.gansunongyedaxue guanlixueyuan, lanzhou 730070; 2.gansunongyedaxue ziyuanyuhuanjingxueyuan, lanzhou 730070)

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Spatiotemporal Evolution of Land Use Function and Influencing Factors in Loess Hilly Region of Longzhong
WEI Jun1, LI Xiaodan1, MA Liya1, YAN Min1, LIU Xuelu2, WANG Quanxi1

(1.college of management, gansu agricultural university, lanzhou 730070, china; 2.college of resources and environmental sciences, gansu agricultural university, lanzhou 730070, china)

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备注

为探究甘肃省生态脆弱区土地利用功能时空演变规律及其驱动因素,以黄土丘陵区为例,基于“三生”功能视角,运用综合评价法、核密度估计和地理探测器等方法,揭示黄土丘陵区27个县域单元2009—2017年土地利用功能时序动态演进规律、空间特征及影响因素。结果表明:(1)2009—2017年,黄土丘陵区土地利用总功能有序提升,但整体水平不高,生态功能小幅下降,生产、生活功能水平快速提高,且空间分异显著。(2)黄土丘陵区土地利用功能区域差异特征明显,有进一步扩大趋势,且存在轻微空间极化现象。(3)黄土丘陵区“三生”功能时空演化是区域自然资源禀赋及社会经济条件综合作用的结果,且任意两项子功能交互后对土地利用总功能解释力均为增强关系。应针对“三生”功能时空特征和影响因素制定差异化土地利用策略,科学配置土地资源,调整土地利用方式,协调不同功能关系,提高土地利用总功能水平,有助于优化国土空间格局、提升国土空间利用质量。
In order to explore the spatiotemporal evolution of land use function and its driving factors in the ecologically fragile areas of Gansu Province, taking the loess hilly area as an example, we used comprehensive evaluation methods, nuclear density estimation and geographic detectors are to reveal the dynamic evolution law, spatial characteristics and influencing factors of land use function in district and county units from 2009 to 2017 based on the perspective of land use multi-function. The results show that:(1)in 2009, the total land use function in the loess hilly area was improved in an orderly manner, but the overall level was not high, the ecological function declined slightly, the production and living functions improved rapidly, and the spatial differentiation was significant;(2)the land use function of the loess hilly area had obvious characteristics of regional differences, with a trend of further expansion and slight spatial polarization;(3)the spatiotemporal evolution of the land use multi-function in the loess hilly area was the result of the comprehensive effect of the regional natural resource endowment and socio-economic conditions, and the explanatory power of the total land use function after any two sub-functions interacts was enhanced. Based on the spatial and temporal characteristics and influencing factors of the land use multi-function function, the differentiated land use strategies should be formulated to scientifically allocate land resources, adjust land use methods, coordinate different functional relationships, improve the overall functional level of land use, and help optimize the spatial pattern of the country and improve the quality of land use.
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