LIU Qiang,WEI Feihong,XIA Xue,et al.Landscape Pattern Evolution and Driving Forces of Land Use in Kuye River Basin from 1980 to 2020[J].Research of Soil and Water Conservation,2023,30(05):335-341.[doi:10.13869/j.cnki.rswc.2023.05.029.]
1980—2020年窟野河流域土地利用景观格局演变及其驱动力
- Title:
- Landscape Pattern Evolution and Driving Forces of Land Use in Kuye River Basin from 1980 to 2020
- 文章编号:
- 1005-3409(2023)05-0335-07
- Keywords:
- middle reaches of the Yellow River; Kuye River Basin; climate change; landscape pattern; driving force
- 分类号:
- P901
- 文献标志码:
- A
- 摘要:
- [目的]探讨1980—2020年窟野河流域土地利用景观演变过程及其驱动因素,为黄河全流域生态系统的管理与高质量发展提供参考。[方法]选取Landsat系列遥感数据为数据源,利用景观生态学和GIS空间分析对窟野河流域土地利用景观格局变化特征进行分析,并结合气候数据和社会经济数据探讨了窟野河流域土地利用景观格局演变的驱动因素。[结果]窟野河流域耕地面积从1980年的1677.92 km2减少到2020年的1 365.58 km2; 草地面积从1980年的5 144.35 km2减少到2020年的5 038.97 km2; 林地面积和建设用地面积分别增加86.07 km2,798.96 km2,水域面积和未利用土地面积分别减少60.25 km2,408.72 km2。1980—2020年窟野河流域土地利用类型转移主要有未利用土地转向耕地和草地,占未利用土地面积减少量的8.63%和61.47%; 耕地、草地和未利用土地转向建设用地,占建设用地面积增加量的23.07%,50.98%和10.95%,且2000—2020年土地利用类型转移强度高于1980—2000年。流域内景观斑块表现出斑块数量增加,相连度减小,破碎化程度增加,分割度升高,凝聚度降低和复杂度上升的特征。[结论]气候变化和人类活动都是造成窟野河流域土地利用景观格局演变的影响因素,其中流域内逐年增强的人类活动是促使景观格局发生演变的主要因素,而气候变化是次要因素。
- Abstract:
- [Objective] This study aims to explore the evolution process and driving factors of land use landscape in Kuye River Basin from 1980 to 2020, and to provide reference for the management and high-quality development of ecosystem in the whole Yellow River Basin. [Methods] Landsat series remote sensing data were selected as the data source, and the characteristics of land use landscape pattern change in the Kuoye River Basin were analyzed by landscape ecology and GIS spatial analysis. Combined with climate data and socioeconomic data, the driving factors of land use landscape pattern evolution in Kuye River Basin were discussed. [Results] The cultivated land area in the Kuye River Basin decreased from 1 677.92 km2 in 1980 to 1 365.58 km2 in 2020. The grassland area decreased from 5 144.35 km2 in 1980 to 5 038.97 km2 in 2020. The forestland area and construction land area increased by 86.07 km2 and 798.96 km2, respectively, while the water area and unused land area decreased by 60.25 km2 and 408.72 km2, respectively. From 1980 to 2020, the transfer of land use types was mainly from unused land to arable land and grassland, accounting for 8.63% and 61.47% of the reduction of unused land area. Arable land, grassland and unused land transferred to construction land accounted for 23.07%, 50.98% and 10.95% of the increase of construction land area, and the intensity of land use type transfer from 2000 to 2020 was higher than that from 1980 to 2000. The landscape patches in the watershed showed the characteristics of increasing the number of patches, decreasing the degree of connectedness, increasing the degree of fragmentation, increasing the degree of segmentation, decreasing the degree of cohesion and increasing the complexity. [Conclusion] Climate change and human activities are both the influencing factors of landscape pattern evolution in Kuye River Basin, among which the increasing human activities are the main factor promoting landscape pattern evolution, while climate change is the secondary factor.
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备注/Memo
收稿日期:2022-08-14 修回日期:2022-09-04
资助项目:国家自然科学基金“黄土区地表产流机制变化对植被恢复的响应”(42077075)
第一作者:刘强(1983—),男,甘肃兰州人,博士,副教授,研究方向为区域资源与环境。E-mail:guangmingliu1983@163.com
通信作者:穆兴民(1961—),男,陕西华阴人,博士,研究员,博士生导师,研究方向为生态水文。E-mail:xmmu@ms.iswc.ac.cn