globalchange  > 气候变化与战略
DOI: 10.1016/j.geoderma.2020.114305
Title:
Land-use change effects on protozoic silicon pools in the Dajiuhu National Wetland Park, China
Author: Qin Y.; Puppe D.; Payne R.; Li L.; Li J.; Zhang Z.; Xie S.
Source Publication: Geoderma
ISSN: 167061
Publishing Year: 2020
Volume: 368
Language: 英语
Keyword: Agriculture ; Biogenic silicon ; Drainage ; Peatland ; Testate amoebae
Scopus Keyword: Agriculture ; Drainage ; Lakes ; Land use ; Protozoa ; Silica ; Silicon ; Soil moisture ; Biogenic silica ; Biogenic silicon ; Ecosystem functioning ; Human activities ; Human influences ; Land-use change ; Peatland ; Testate amoebae ; Wetlands ; agricultural ecosystem ; biogenic material ; drainage basin ; ecosystem function ; land use change ; peatland ; pool ; protozoan ; silica ; silicon ; soil moisture ; China ; Dajiuhu Wetland Reserve ; Hubei ; Sphagnum
English Abstract: Many peatlands have been damaged by human activities like Sphagnum harvesting and draining reflected in reduced peatland areas and ecosystem functioning. Peatlands generally play an important role in global silicon (Si) cycling and maintain huge numbers of testate amoebae (TA). However, there is a lack of knowledge on (i) the quantity of protozoic Si pools (represented by siliceous shells of TA) in peatlands and (ii) how these pools respond to land use changes caused by human influence. In our study, we quantified protozoic Si pools in the Dajiuhu National Wetland Park, China, with a focus on the comparison between peatland and cropland areas (i.e., former peatland drained for agriculture). We found protozoic Si pools to (i) represent an important biogenic silica fraction in peatlands and (ii) significantly differ between peatlands and croplands with soil moisture as a key factor for protozoic Si pool quantity showing a significant decrease of these pools in drained areas (i.e., in croplands). From our results we concluded the decrease of protozoic Si pools due to land-use change to represent another example (apart from the loss of phytogenic Si) for anthropogenic desilication in agricultural biogeosystems in general. © 2020 Elsevier B.V.
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Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/158114
Appears in Collections:气候变化与战略

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Affiliation: Hubei Key Laboratory of Critical Zone Evolution, School of Geography and Information Engineering, China University of Geosciences, Wuhan, 430074, China; Leibniz Centre for Agricultural Landscape Research (ZALF), Müncheberg, 15374, Germany; Department of Environment and Geography, University of York, Heslington, York, YO10 5NG, United Kingdom; Shennongjia National Park Administration, Shennongjia, 442400, China

Recommended Citation:
Qin Y.,Puppe D.,Payne R.,et al. Land-use change effects on protozoic silicon pools in the Dajiuhu National Wetland Park, China[J]. Geoderma,2020-01-01,368
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