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Water table drawdown reshapes soil physicochemical characteristics in Zoige peatlands

文献类型：期刊论文

作者Liu, Liangfeng1,4,5; Chen, Huai1,4; Jiang, Lin1,2; Hu, Ji1,4,5; Zhan, Wei1,4,5; He, Yixin1,4,5; Zhu, Dan1,4,5; Zhong, Qiuping1,4,5; Yang, Gang1,3
刊名CATENA
出版日期2018-11
卷号170期号:2018页码:119-128
关键词Zoige Plateau Degradation C/N Ash content HI delta C-13
ISSN号0341-8162
DOI10.1016/j.catena.2018.05.025
产权排序1
文献子类Article
英文摘要Warming and human activities have caused peatland degradation and water table drawdown, which greatly influence the physicochemical characteristics of soil at different depths. How water table drawdown affects soil physicochemical characteristics is not well understood for the Tibetan Plateau, especially the Zoige peatlands. This study measured variations in C/N ratio, ash content, delta C-13, and humification index (HI) as a function of water table drawdown and depth by sampling 100-cm soil columns from three sites with different water tables in the Zoige peatlands. C/N ratio decreased while ash content and HI increased with water table drawdown, suggesting greater decomposition of soil organic matter at sites with a lower water table. The response of soil physicochemical characteristics to water table drawdown varied with depth: in the layer above the water table, C/N ratio did not vary, ash content decreased and HI increased; in the layer below the water table, C/N ratio and HI decreased, while ash content increased. The physicochemical characteristics above the water table were influenced mainly by new carbon input, while the characteristics below the water table were influenced mainly by decomposition. The depth profile of C/N ratio, ash content and HI aligned well with peat formation and decomposition and may be indicators of peat degradation. delta C-13 did not vary with water table drawdown, depth, or decomposition process. These insights into the variation of soil physicochemical characteristics with depths and water table may help elucidate the processes behind peatland degradation.
学科主题Environment ; Ecology
URL标识查看原文
WOS关键词STABLE CARBON ISOTOPES ; ORGANIC-CARBON ; HUMIC ACIDS ; PEAT DECOMPOSITION ; DEPTH PROFILES ; CLIMATE-CHANGE ; DEGRADATION ; RESPIRATION ; INDICATORS ; RESPONSES
WOS研究方向Geology ; Agriculture ; Water Resources
语种英语
WOS记录号WOS:000441681500011
出版者ELSEVIER SCIENCE BV
源URL[http://210.75.237.14/handle/351003/30129]  
专题生物多样性与生态系统服务领域_生态研究
成都生物研究所_生态研究
生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室
生物多样性与生态系统服务领域_生态系统恢复与生物多样性保育四川省重点实验室
食品安全与环境治理领域_环境微生物四川省重点实验室
生物多样性与生态系统服务领域
通讯作者Chen, Huai
作者单位1.Zoige Peatland and Global Change Research Station, Chinese Academy of Sciences, Hongyuan 624400, China;
2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Forestry, Northwest A&F University, Yangling 712100, China;
3.School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
4.Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China;
5.University of Chinese Academy of Sciences, Beijing 100049, China;
推荐引用方式
GB/T 7714		 Liu, Liangfeng,Chen, Huai,Jiang, Lin,et al. Water table drawdown reshapes soil physicochemical characteristics in Zoige peatlands[J]. CATENA,2018,170(2018):119-128.
APA Liu, Liangfeng.,Chen, Huai.,Jiang, Lin.,Hu, Ji.,Zhan, Wei.,...&Yang, Gang.(2018).Water table drawdown reshapes soil physicochemical characteristics in Zoige peatlands.CATENA,170(2018),119-128.
MLA Liu, Liangfeng,et al."Water table drawdown reshapes soil physicochemical characteristics in Zoige peatlands".CATENA 170.2018(2018):119-128.

入库方式： OAI收割

来源：成都生物研究所

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