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结合社会生态系统对长江流域土地利用和气候变化的非线性反应
Jianping Wu1, Wenjie Li2, Hongbo Du3
1Key Laboratory of Ministry of Education for Hydraulic and Water Transport Engineering, Chongqing Jiaotong University, Chongqing, 400074, People's Republic of China.
Scientific reports
|February 26, 2025
概括
土地使用和气候变化影响流域可持续性. 对长江流域的网络分析揭示了社会生态系统的非线性反应和关键值,有助于可持续管理.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 水文学的水文学
背景情况:
- 由于土地利用和气候变化加剧,流域可持续性受到威胁.
- 社会生态系统 (SESs) 对这些干扰表现出复杂的,非线性反应.
- 了解这些反应对于有效的流域管理至关重要.
研究的目的:
- 研究流域社会生态系统 (SESs) 对气候和土地利用变化的非线性反应.
- 建设和分析长江流域的SES网络.
- 确定影响SES网络动态的关键值.
主要方法:
- 网络分析应用于长江流域的六维SES网络.
- 评估网络节点重要性和链接数量的变化.
- 确定土地使用动态 (LUD) 和标准化降水蒸发转化指数 (SPEI) 的关键值.
主要成果:
- 土地利用动态 (LUD) 和标准化降水蒸发转化指数 (SPEI) 显著改变了网络结构和节点重要性,特别是植被和景观节点.
- 在LUD,SPEI和合的SES元素之间观察到强烈的非线性反应.
- 对所有网络属性确定了关键值,LUD值显示出比SPEI值更大的稳定性 (0.24).
结论:
- 网络分析为了解流域SES动态提供了一个新的视角.
- 确定关键值对于预测和管理SES对环境变化的反应至关重要.
- 这些发现对可持续的流域生态系统管理和规划有重大影响.
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