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    周德志, 关颖慧, 张冰彬, 陈容, 王秀茹. 基于土地利用变化的陕北地区生境质量时空演变及其驱动因素[J]. 北京林业大学学报, 2022, 44(6): 85-95. DOI: 10.12171/j.1000-1522.20210437
    引用本文: 周德志, 关颖慧, 张冰彬, 陈容, 王秀茹. 基于土地利用变化的陕北地区生境质量时空演变及其驱动因素[J]. 北京林业大学学报, 2022, 44(6): 85-95. DOI: 10.12171/j.1000-1522.20210437
    Zhou Dezhi, Guan Yinghui, Zhang Bingbin, Chen Rong, Wang Xiuru. Spatial-temporal evolution of habitat quality in northern Shaanxi Province of northwestern China based on land use change and its driving factors[J]. Journal of Beijing Forestry University, 2022, 44(6): 85-95. DOI: 10.12171/j.1000-1522.20210437
    Citation: Zhou Dezhi, Guan Yinghui, Zhang Bingbin, Chen Rong, Wang Xiuru. Spatial-temporal evolution of habitat quality in northern Shaanxi Province of northwestern China based on land use change and its driving factors[J]. Journal of Beijing Forestry University, 2022, 44(6): 85-95. DOI: 10.12171/j.1000-1522.20210437

    基于土地利用变化的陕北地区生境质量时空演变及其驱动因素

    Spatial-temporal evolution of habitat quality in northern Shaanxi Province of northwestern China based on land use change and its driving factors

    • 摘要:
        目的  揭示陕北地区生境质量时空变化特征及其驱动因素可为陕北地区生态建设提供科学指引。
        方法  以1990、2000、2010和2020年4期土地利用数据为基础,基于InVEST模型评估1990—2020年生境质量的时空变化特征,并通过地理探测器单因子探测和交互探测分析其影响因素。
        结果  (1)研究期间陕北地区土地利用结构发生了显著变化,耕地和未利用地面积分别减少3.83%和1.91%,草地、林地和建设用地分别增加3.02%、1.61%和1.10%;土地利用类型的转移呈现出明显的阶段性特征,1990—2000年和2000年以后分别以未利用地转变为草地以及耕地转变成草地和林地为主要特征。(2)1990—2020年,陕北地区生境质量指数平均值由0.636变为0.651,总体呈上升趋势;生境质量空间上呈“南部高,西北低”的分布格局,生境质量高值区主要分布在南部林地和草地区,低值区主要分布在西北部毛乌素沙地;生境质量等级上升的区域主要分布在研究区中部及西北部大部分区域。(3)土地利用是影响生境质量时空分布的第一因素,对生境质量空间分异的解释程度为0.433,在交互作用探测中,任意两种影响因素的交互作用大于单个因素的单独作用,自然因素与人文因素共同主导生境质量的时空变化。
        结论  陕北地区生境质量时空变化与土地利用类型的分布密切相关,优化土地利用结构、减小人类活动的影响对提高陕北地区生境质量有重要意义。

       

      Abstract:
        Objective  Northern Shaanxi Province of northwestern China is an important area for the implementation of ecological restoration projects. This paper aims to reveal the spatial-temporal evolution and driving factors of habitat quality, then provide scientific reference for ecological construction.
        Method  Based on the land use data, the InVEST model was used to evaluate the habitat quality in the northern Shaanxi Province of northwestern China from 2000 to 2020, the influencing factors were analyzed by the single factor detection and interactive detection methods of geographic detectors.
        Result  (1) The land use structure in northern Shaanxi Province had changed significantly during the study period, cultivated land and unused land decreased by 3.83% and 1.91%, respectively. Grassland, forest land and construction land increased by 3.02%, 1.61% and 1.10%, respectively. The transfers of land use types were significantly different in varied periods, a large number of unused land was transformed into grassland from 1990 to 2000, while cultivated land was transformed into grassland and forest land after 2000. (2) The average value of habitat quality index in northern Shaanxi Province changed from 0.636 to 0.651 during the study period, with an increasing trend. The areas with high habitat quality were mainly distributed in woodland and grassland areas in the southern part, and the low value areas were mainly distributed in Mu Us Sandy Land in the northwestern part. The areas where the habitat quality grade increased were mainly distributed in the middle and northwest of the study area. (3) Land use type was the first factor affecting the temporal and spatial distribution of habitat quality, with the q value of 0.433. The interaction of any two factors on habitat quality was far greater than that of a single factor, natural factors and social factors dominated the temporal and spatial changes of habitat quality.
        Conclusion  The spatial and temporal changes of habitat quality in northern Shaanxi Province are closely related to the distribution of land use types. Optimizing land use structure and reducing the impact of human activities are of great significance to improve the habitat quality in northern Shaanxi Province.

       

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