Knowledge Management System of Northwest Institute of Plateau Biology, CAS
Characteristics of soil water percolation and dissolved organic carbon leaching and their response to long-term fencing in an alpine meadow on the Tibetan Plateau | |
Yang, Yongsheng1; Li, Hongqin1; Zhang, Li2; Zhu, Jingbin1,3; He, Huidan1,3; Wei, Yaxi1,3; Li, Yingnian1,4 | |
2016-12-01 | |
发表期刊 | ENVIRONMENTAL EARTH SCIENCES |
卷号 | 75期号:23 |
文章类型 | Article |
摘要 | Fencing is an important method for restoring and reconstructing degraded grasslands on the Tibetan Plateau. Understanding the characteristics of soil water percolation and soil dissolved organic carbon (DOC) leaching and their response to long-term fencing (10 years) could provide a scientific basis for the management of soil water resources and carbon sinks in alpine grasslands. In this study, grazing plots and plots fenced for 10 years were selected in an alpine meadow, and soil bulk density, soil organic carbon (SOC) density, vegetative carbon (VC) density, soil water percolation and DOC leaching were monitored regularly in the two treatments. The results were as follows: (1) Longterm fencing reduced the soil bulk density and improved carbon sequestration in the alpine meadow. The soil bulk density at a depth of 0-20 cm in the fenced plots was significantly lower than that of the grazing plots (p < 0.05), and SOC density and VC density at a depth of 0-40 cm were higher than those of the grazing plots to a different degree. (2) During the non-frozen period (from May to September), total soil water leakage at a depth of 40 cm in the grazing plots was 9.6 mm, which accounted for 2.2% of the total rainfall in this period. After fencing for 10 years, soil water leakage was increased by 53.1%. (3) From May to September, total DOC leaching from the grazing plots was 34.6 gC m(-2), and total DOC leaching from the fenced plots was increased by 55.5% compared to the grazing plots. Our results demonstrated obvious soil water percolation and DOC leaching in the alpine meadow. The DOC entered into the groundwater system with the percolation water and finally flowed into lakes and rivers, which represents an important soil carbon loss pathway in alpine meadows. |
关键词 | Long-term Fencing Alpine Meadow Soil Water Percolation Doc Leaching Soil Organic Carbon Density |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
DOI | 10.1007/s12665-016-6178-0 |
关键词[WOS] | BELOW-GROUND BIOMASS ; CHEMICAL-PROPERTIES ; CHINA ; NITROGEN ; GRASSLANDS ; STORAGE ; INFILTRATION ; LIVESTOCK ; MINERALIZATION ; PRODUCTIVITY |
收录类别 | SCI |
语种 | 英语 |
项目资助者 | Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03030502) ; Natural Science Foundation of Qinghai Province(2014-ZJ-901 ; National Natural Science Foundation of China(31300385 ; 2016-ZJ-943Q) ; 31270523) |
WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
WOS记录号 | WOS:000391380300007 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/6663 |
专题 | 中国科学院西北高原生物研究所 |
作者单位 | 1.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810001, Peoples R China 2.Environm Protect Bur Qinghai, Ecol Environm Monitoring Ctr, Xining 810001, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Peoples R China |
推荐引用方式 GB/T 7714 | Yang, Yongsheng,Li, Hongqin,Zhang, Li,et al. Characteristics of soil water percolation and dissolved organic carbon leaching and their response to long-term fencing in an alpine meadow on the Tibetan Plateau[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(23). |
APA | Yang, Yongsheng.,Li, Hongqin.,Zhang, Li.,Zhu, Jingbin.,He, Huidan.,...&Li, Yingnian.(2016).Characteristics of soil water percolation and dissolved organic carbon leaching and their response to long-term fencing in an alpine meadow on the Tibetan Plateau.ENVIRONMENTAL EARTH SCIENCES,75(23). |
MLA | Yang, Yongsheng,et al."Characteristics of soil water percolation and dissolved organic carbon leaching and their response to long-term fencing in an alpine meadow on the Tibetan Plateau".ENVIRONMENTAL EARTH SCIENCES 75.23(2016). |
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