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水库系统历史演变对水系统景观模式的影响:中国长沙的案例
1China Architecture Design and Research Group, No.19 Che Gong Zhuang Street, Beijing, China. Liang.H.2023@outlook.com.
Environmental science and pollution research international
|November 23, 2023
概括
70年来,水库建设显著扩大了人造湖泊,同时减少了长沙区的河流面积. 这种发展增加了水系统的碎片化和分散,影响了景观模式.
科学领域:
- 水文和水资源水文与水资源
- 景观生态学 景观生态学
- 环境科学 环境科学
背景情况:
- 水库是提供生态系统服务的重要水生态基础设施.
- 了解水库建设对土地利用和景观模式的影响至关重要.
- 水库开发对水系统景观模式的局部影响需要全面调查.
研究的目的:
- 从1950年到2020年,分析长沙区水系统的历史演变和景观模式变化.
- 量化水库建设对河流和水库地区的影响.
- 评估水库开发对水系统连接,碎片化和复杂性的影响.
主要方法:
- 使用地图和遥感数据 (1950-2020) 重建历史水库和河流演变.
- 分析关键年份 (1950, 1960, 1990, 2020) 的水系统的景观模式指标和图形理论指标.
- 量化水库和河流地区的变化及其空间特征.
主要成果:
- 1950年至2020年期间,水库面积增加了64.195平方公里,而河流面积减少了7.297平方公里.
- 水库建设的峰值发生在20世纪50年代和20世纪70年代至80年代.
- 水库建设减少了水系统的连接,增加了碎片化和分散,但对度和形状复杂性影响最小.
结论:
- 水库开发显著改变了当地水系统的景观模式.
- 这些发现有助于优化水系统模式和水库组管理.
- 该研究为水生态基础设施决策和人工湖生态效应研究提供了见解.
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