河流生态廊道提取方法研究及其应用思路

Abstract

PDF HTML阅读 XML下载 导出引用 引用提醒 河流生态廊道提取方法研究及其应用思路 DOI: 10.5846/stxb202102090415 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 国家水体污染控制与治理科技重大专项（2018ZX07110003）；国家自然科学基金（31670467） Research progress on methods of river ecological corridor extraction and their application Author: Affiliation: Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:随着交叉学科的发展和技术手段的进步，将河流及其周边生态环境视为整体的理念和研究逐渐受到重视，然而国内对河流生态廊道的研究较少。总结了河流生态廊道的基础理论和提取方法。河流生态廊道可以依据区域规划、通过实地观测等手段直接提取，也可以采用"源地识别-阻力面构建-廊道提取"的框架间接提取。对直接和间接提取方法进行了详细的总结并分析了他们的优势和劣势，发现间接提取方法更具实践意义，且应用的流域面积更大。根据间接提取方式的特点，提出白洋淀-大清河流域河流生态廊道提取的思路。结合区域流域协同治理理念，逐步形成以白洋淀为中心、向周边辐射的河流生态廊道，实现流域水质提升、生物多样性稳定等目标，全面提升生态环境质量。在河流生态廊道提取科学性提升和提取过程中廊道宽度优化等薄弱环节提出未来研究方向。 Abstract:The over exploitation of natural sources leads to a huge burden on water, air, and other environment, among which the response of water environment is the most direct and rapid. With the interdisciplinary development and technology progress, more and more attention has been paid to rivers and their surrounding ecological environment as an integrated river ecological corridor, but there are few researches on river ecological corridor in China. This article summarizes the fundamental theory and extraction methods of river ecological corridor. The river ecological corridor can be defined as the river itself, the riparian vegetation zone along the river and all the related ecological elements, through which river network and ecological flow connect. The extraction methods of river ecological corridor can be classified to direct or indirect categories. The river ecological corridor can be directly extracted according to regional planning or field observation, or indirectly by the framework of "source identification-resistance surface construction-corridor extraction". The patches with high ecosystem service value are often identified as the source area; the resistance surface is often constructed by different environmental variables, such as land use type, elevation, slope, and others, and these environmental variables are given weight according to experience or expert consultation; then the ecological corridor is extracted by different models combining source area and resistance surface. In this paper, these two extraction methods are summarized in detail, and their advantages and disadvantages are discussed as well. The results show that the indirect extraction method has more practical significance, and can more clearly explain the connectivity between patches in a larger watershed. Meanwhile, the indirect extraction method is more time-saving and convenient with the help of RS and GIS technology. With the advantages of indirect extraction method, the extraction idea of river ecological corridor in Baiyangdian-Daqing River Basin is proposed. The area of Baiyangdian-Daqing River Basin is 45000 km2, including Xiong'an New Area and Tianjin Binhai Industrial belt. Different industrial clusters drive the development of whole basin. Incorporated with the ideas of region and watershed collaborative management, a river ecological corridor radiating outwards from the core-Baiyangdian Wetland is gradually formed, thereby realizing the goal of water quality improvement and biodiversity stability in the river basin, and comprehensively improving the quality of reginal ecological environment. At the end, future research directions are proposed in the weak links of scientific improvement of river ecological corridor extraction and width optimization of river ecological corridor. 参考文献 相似文献 引证文献