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建立基于水文连接的湿地生态走廊系统,目的是改善区域生物多样性
Yi Qu1, Xingyu Zeng1, Chunyu Luo1
1National and Local Joint Laboratory of Wetland and Ecological Conservation, Institute of Natural Resources and Ecology, Heilongjiang Academy of Sciences, Harbin, 150040, China.
Journal of environmental management
|August 11, 2024
概括
本研究引入了湿地生态走廊 (ECS) 的新框架,优先考虑水文连接,增强生物多样性热点. 该研究确定了28个走廊,以改善湿地生态系统的健康和保护价值.
科学领域:
- 湿地生态学湿地生态学
- 保护生物学 保护生物学
- 水文学的水文学
背景情况:
- 湿地生态系统依赖于水文连接才能正常运行.
- 当前的湿地生物多样性网络往往忽视了水文连接性,而是专注于物种迁移抵抗力.
- 将水文连接纳入湿地生态走廊系统 (ECS) 仍然是一个挑战.
研究的目的:
- 提出一个新的框架来构建湿地ECS,通过结合水文连接来提高生物多样性热点的保护价值.
- 根据生物多样性动态,河流层次和水文连接性,澄清走廊的功能维度.
- 使用最低成本模型 (LCM) 确定走廊的空间分布和功能区分.
主要方法:
- 开发了湿地ECS建设的框架,重点是水文连接.
- 采用最低成本模型 (LCM),结合水文连接阻力指标:水覆盖面,植被水利用效率和土地使用适用性.
- 基于生物多样性热点动态,河流分类和水文连接维度的定义走廊功能.
主要成果:
- 确定了28个走廊:25个用于垂直水文连接 (3个维持现状,6个改善,16个恢复) 和3个用于横向水文连接.
- 走廊面积为11平方公里,占研究区域的6.79%,分布在核心和缓冲区内.
- 最广泛的走廊覆盖与水文植被梯度 (HVG) 和土地使用/覆盖变化 (LUCC) 的低适宜性区域有关.
结论:
- 拟议的框架有效地将水文连接纳入湿地ECS设计,改善整体连接和生物多样性热点保护价值.
- 该框架提供技术支持和有针对性的战略,用于开发连接的湿地生物多样性网络,与全球生物多样性目标保持一致.
- 这种方法为可持续的湿地管理和保护工作提供了科学基础.
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