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水文连通性研究进展_高常军

来源:8miu百度云文档 编辑:小木木 时间:2018-07-22 11:23

水文连通性研究进展_高常军

收稿日期 Received: 2017-06-22 接受日期 Accepted: 2017-07-18

*林业公益性行业科研专项(201404305)、广东省林业科技创新项目(2016KJCX026)和国家自然科学基金项目(41430529)资助 Supported by the Forestry Nonprofit Industry Scientific Research Special Project (201404305), the Guangdong Forestry Science and Technology Innovation Project (2016KJCX026) and the National Natural Science Foundation of China (41430529)

**通讯作者 Corresponding author (E-mail: gaochangjun015@/doc/d75c4e381fb91a37f111f18583d049649b660e23.html )水文连通性研究进展*

高常军1, 2** 高晓翠3 贾 朋3

1

广东省森林培育与保护利用重点实验室 广州 5105202广东省林业科学研究院 广州 510520

3华南农业大学林学与风景园林学院 广州 510642

摘 要水文连通是反映流域水生态过程、蓄泄能力及修复效果的关键指标,也是国家解决水问题的重要途径. 在总结前人研究基础上,尝试界定水文连通性的内涵及范畴,同时对水文连通性的评估方法、理论体系及其应用实践进行综述. 水文连通性的狭义概念是指流域内物质以水为媒介,在空间异质性景观或斑块内(间)进行传输的便利程度;广义概念则指地球外部各圈层内(间)各种生态水文及生物地球化学过程在不同时空尺度上的流通程度. 将目前已有的水文连通性评估方法划分为原位监测、水文模型、连通性函数和图论等4类,现有方法多关注流域尺度内地表水文结构连通度的定量表征,尚不具备尺度推绎性. 水文连通理论体系研究目前尚落后于实践、未成系统. 最后介绍了水文连通在影响平原水网调蓄能力和修复受损水生态系统功能两个方面的应用实践. 未来应结合地学信息技术与野外监测数据,开展跨多时空尺度域的综合水文连通性定量评估;重点关注连通工程前中后需遵循的原理;应用实践应重点关注不同河流结构的河网调蓄特征和最佳蓄泄调度,以及构建能够表征各种关键模块的综合水文连通修复模型框架,筛选能够指示修复过程或效果的关键因素. (图2 表1 参62)

关键词 流域;水文连通;水生态系统;生态修复;生态水文;生态完整性

CLC X171.1 : X143

Summary comments on hydrologic connectivity *

GAO Changjun 1, 2**, GAO Xiaocui 3 & JIA Peng 3 1

Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization , Guangzhou 510520, China 2

Guangdong Academy of Forestry , Guangzhou 510520, China 3College of Forestry and Landscape Architecture, South China Agricultural University , Guangzhou 510642, China

Abstract Hydrologic connectivity (HC) is a key index for reflecting the process, storage-discharge capacity, and effectiveness of aquatic ecosystem restoration on a watershed scale. Meanwhile, it is also an important way to resolve water problems in a nation. Therefore, it is necessary to summarize the research progress in HC. Based on a summary of available research, the concept, type, evaluation method, theory system, and application of HC was summarized. The narrow concept of HC refers the degree to which water-mediated transfer of matter within or across a spatially heterogeneous landscape or patches, while the narrow concept of HC means the degree of connection to all kinds of eco-hydrological and biogeochemical processes across spatio-temporal scales within or between the earth’s outer spheres. The current HC evaluation methods were generalized as in-situ monitoring, hydrologic model, connectivity functions, and graph theory. All of these methods were concentrated in a quantitative expression of the surface hydrological structure connectivity within watersheds, which cannot be applied on other scales. The study of HC theory is still lagging behind practice and is not systematic. Finally, applying HC to influence the storage capacity of freshwater in plains areas and restore the riverine system was introduced briefly. In the future, HC evaluation methods could quantify integrated HC across space and time combined with geological information technology and the field monitoring data. For the application of HC, the directions of future study were discussed, including the principles around connectivity engineering, storage characteristics, and the best storage-discharge regulations for different stream structures. The integrated model framework should contain all kinds of key modules, e.g., the impacts of climate change and anthropogenic activities, ecological processes, and restoration cost and value, and which can identify the critical factors for indicating restoration processes or effects. These findings may provide a theoretical basis for managers to restore ecosystems or adopt adaptive countermeasures.

Keywords watershed; hydrologic connectivity ; aquatic ecosystem; ecology restoration; ecohydrology; ecology integrity

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