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    干旱区河谷绿洲土地利用冲突格局分析

    An analysis of the pattern of land-use conflicts in valley oases in arid areas

    • 摘要: 土地利用冲突识别对协调干旱区绿洲生态保护与社会经济发展之间的平衡具有重要意义。选取乌鲁木齐河流域的河谷绿洲新疆乌鲁木齐市为研究区,基于 2000年、2010年和2018年土地利用现状数据,构建土地利用冲突综合测度模型,通过空间自相关及冷热点分析方法,进一步分析了土地利用冲突空间格局的分布特征。结果表明: ①土地利用冲突面积呈逐年增加趋势,等级面积表现为无冲突>中度冲突>轻度冲突>重度冲突; 草地、耕地、建设用地和林地较容易发生土地利用冲突。②研究区土地利用冲突有显著的空间正相关性,空间集聚程度较高; 通过冷热点分析发现,2000—2018年,土地利用冲突的热点区由中心城区北部及西南地区迁移至东部及南部,且分布范围缩小,冷点区主要聚集在中心城区内部以及东部和南部的山区。③研究区土地利用程度与土地利用冲突呈空间正相关关系; 块金值与基台值的比值从0.21上升至0.49,空间相关性减弱,随机性因素对该区土地利用冲突的影响增强。

       

      Abstract: The identification of land-use conflicts is of great significance for maintaining the balance between ecological protection and the socio-economic development in oases in arid areas. Based on the data of land use status in 2000, 2010, and 2018 of Urumqi City-a valley oasis in the Urumqi River Basin, this paper constructs a comprehensive measurement model of land-use conflicts and further analyzes the distribution characteristics of the spatial pattern of land-use conflicts using the methods of spatial autocorrelation and cold/hot spot analysis. The results are as follows. ① The total area of land-use conflicts has increased year by year, and the area of lands with different land-use conflict levels is in the order of no conflict > moderate conflicts > mild conflicts > severe conflicts. Meanwhile, land-use conflicts are more liable to occur in grassland, cultivated land, construction land, and woodland. ② There is a significant spatial positive correlation between land-use conflicts in the study area, and the land-use conflicts are highly concentrated in terms of space. According to the analysis of cold and hot spots, it is found that from 2000 to 2018, the hot spots of land-use conflicts migrated from the northern part of the central urban area and southwestern parts to the eastern and southern parts of the urban area, with the distribution scope narrowing. In comparison, the cold spots of the land-use conflicts mainly concentrated inside the central urban area and the eastern and southern mountainous areas. ③ There is a positive spatial correlation between the land use degree and the land-use conflicts in the study area. C0/(C0+C) increased from 0.21 to 0.49 during 2000—2018, indicating that the spatial correlation weakened and the land-use conflicts are increasingly affected by random factors.

       

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