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The frontier evolution and emerging trends of hydrological connectivity in river systems:a scientometric review

Frontiers of Earth Science 2021年第1期15卷 81-93页

作者： Bowen LI Zhifeng YANG Yanpeng CAI Bo LI Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhou 510006China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China

With the intensification of climate change and human activities,the watershed ecosystem is seriously fragmented,which leads to the obstruction of hydrological connectivity,and further causes the degradation of the *** the value of wetlands continues to be exploited,hydrological connectivity becomes increasingly *** this paper,the characteristics and development of hydrological connectivity research from 1998 to 2018 were analyzed through the scientometric analysis based on Web of Science ***,an analytical software for scientific measurement,is used to visualize the results of the *** analysis results of co-occurrence,co-operative and co-cited network indicate that the hydrological connectivity is a multidisciplinary field which involves the Environment Science and Ecology,Water Resources,Environmental Sciences,Geology and *** to Keyword cooccurrence analysis,ecosystem,floodplain,dynamics,climate change and management are the main research hotspots in each *** addition,the co-cited analysis of references shows that“amphibians”is the largest cluster of hydrological connectivity,and the“channel network”is the most important research *** is worth noting that the“GIWS”(Geographically Isolated Wetlands)is the latest research topic and may be a major research direction in the future.

关键词： hydrological connectivity citespace ecosystem geographically isolated wetlands

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Effect of hydrological connectivity on Soil Carbon Storage in the Yellow River Delta Wetlands of China

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Chinese Geographical Science 2021年第2期31卷 197-208页

作者： FENG Jiuge LIANG Jinfeng LI Qianwei ZHANG Xiaoya YUE Yi GAO Junqin School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083China State Key Laboratory of Water Environment Simulation School of EnvironmentBeijing Normal UniversityBeijing 100875China The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration

hydrological connectivity has significant effects on the functions of estuarine wetland *** study aimed to examine the dynamics of hydrological connectivity and its impact on soil carbon pool in the Yellow River Delta,*** calculated the hydrological connectivity based on the hydraulic resistance and graph theory,and measured soil total carbon and organic carbon under four different hydrological connectivity gradients(Ⅰ0‒0.03,Ⅱ0.03‒0.06,Ⅲ0.06‒0.12,Ⅳ0.12‒0.39).The results showed that hydrological connectivity increased in the north shore of the Yellow River and the south tidal flat from 2007 to 2018,which concentrated in the mainstream of the Yellow River and the tidal *** hydrological connectivity was maintained in the wetland restoration *** soil total carbon storage and organic carbon storage significantly increased with increasing hydrological connectivity fromⅠtoⅢgradient and decreased inⅣ*** highest soil total carbon storage of 0‒30 cm depth was 5172.34 g/m^(2),and organic carbon storage 2764.31 g/m^(2)inⅢ*** hydrological connectivity changed with temporal and spatial change during 2007‒2018 and had a noticeable impact on soil carbon storage in the Yellow River *** results indicated that appropriate hydrological connectivity,i.e.0.08,could effectively promote soil carbon storage.

关键词： coastal wetland hydrological connectivity soil carbon carbon storage spatiotemporal variation the Yellow River Delta

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Evolution characteristics of hydrological connectivity pattern of marsh wetland in Naoli River Basin

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Global Geology 2021年第2期24卷 95-102页

作者： WANG Haonan HOU Guanglei YANG Changbao SONG Xiaolin College of Geo-Exploration Science and Technology Jilin UniversityChangchun 130026China Northeast Institute of Geography and Agricultural Ecology Chinese Academy of SciencesChangchun 130102China

As an important indicator of the structural and functional stability of wetland landscapes,hydrological connectivity plays an important role in maintaining the stability of wetland ***-scale human activities have led to significant changes in the hydrological connectivity pattern of wetlands in Naoli River Basin since 1950 *** with the availability of wetland habitat and the spreading capacity of aquatic birds,hydrological connectivity indices of marsh wetlands were calculated in the studied area,and the temporal and spatial changes were analyzed from 1950 s to *** results indicate that:(1)the hydrological connectivity index of the marsh wetlands shows a growth trend with increasing distance *** patches of marsh wetlands linked together when the distance threshold reached 35--40 km;(2)the optimal distance of hydrological connectivity is about 10 km for marsh wetlands of whole Naoli River Basin;(3)the total hydrological connectivity of marsh wetlands decreased in the Naoli River Basin from 1950 s to *** the hydrological connectivity index increased after 2005,the fragmentation of the landscape has not been *** analysis of the wetland hydrological connectivity can provide a scientific basis for the ecological restoration and protection of the wetland in the Naoli River Basin.

关键词： Naoli River Basin hydrological connectivity pattern evolution distance threshold

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