沙漠化的敏感性及其对中国西北塔林盆地土地利用变化的影响
Dajing Li1, Zaichun Zhu2, Erqi Xu3
1School of Urban Planning and Design, Shenzhen Graduate School, Peking University, Shenzhen, China; Key Laboratory of Earth Surface System and Human-Earth Relations, Ministry of Natural Resources of China, Shenzhen Graduate School, Peking University, Shenzhen, China; Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
The Science of the total environment
|November 18, 2024
概括
荒漠化对中国塔林盆地的土地利用产生了重大影响,导致农田被遗弃,需要区域控制. 本研究量化了这些直接和间接的影响,以告知政策.
科学领域:
- 环境科学 环境科学
- 地理 地理 地理 地理.
- 生态生态学 生态生态学
背景情况:
- 荒漠化是干旱地区,特别是中国西北地区的重大环境挑战.
- 土地利用活动面临着沙漠化带来的直接 (如农田放弃) 和间接 (如土地控制) 威胁.
- 关于荒漠化对土地利用的影响的研究有限,大多数研究都集中在相反的关系上.
研究的目的:
- 分析塔林盆地荒漠化敏感性的时空分布.
- 量化沙漠化对2000年至2020年土地利用的直接和间接影响.
- 为荒漠化控制政策和土地利用规划提供见解.
主要方法:
- 利用地中海荒漠化和土地利用 (MEDALUS) 模型来评估荒漠化的敏感性.
- 采用未来土地使用模拟 (FLUS) 模型来分析土地使用变化.
- 荒漠化的量化直接影响 (废弃的农田) 和间接影响 (农田面积控制).
主要成果:
- 荒漠化敏感性在关键地区 (>50%) 最高,紧随其后的是脆弱和潜在地区.
- 直接影响包括68.25平方公里 (2000-2010年) 和1444.25平方公里 (2010-2020年) 的废弃农田,其中3893.25平方公里面临风险.
- 通过农田面积控制指出的间接影响达到1065.75平方公里 (2010) 和4614.00平方公里 (2020).
结论:
- 荒漠化通过直接放弃和间接控制措施显著改变土地使用模式.
- 了解这些影响对于有效的土地管理和干旱地区的政策制定至关重要.
- 这些发现为打击荒漠化和优化区域土地利用规划提供了有价值的参考资料.
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