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Impacts of alpine meadow degradation on the soil moisture and hydrological processes in the three river source region on the Qinghai Tibetan plateau

文献类型：期刊论文

作者Yang, Yongsheng2,3,4,5; Wang, Junbang6,8; Xu, Xinliang6; Zhang, Shuping5; Li, Yuzhe6; Fan, Yuejun7; Zhou, Huakun1,2,3,4,5,10
刊名HYDROLOGICAL PROCESSES
出版日期2023-04-01
卷号37期号:4页码:e14854
关键词alpine meadow degradation evapotranspiration infiltration mattic epipedon soil moisture soil water holding capacity
ISSN号0885-6087
DOI10.1002/hyp.14854
文献子类Article
英文摘要To explore the effects of mattic epipedon (ME) on soil moisture and hydraulic properties in the alpine meadow of three-river source region, the soil moisture, water infiltration, evapotranspiration, soil bulk density and soil water holding capacity of original vegetation (OV), light degradation (LD), moderate degradation (MD) and severe degradation (SD) was conducted in this study, respectively. The results showed that: (1) the alpine meadow degradation reduced the soil moisture in the shallow layer (0-10 cm) and had no significant effects on the soil moisture in the deep layer (20-30 cm). (2) The effects of alpine meadow degradation on infiltration was depend on the presence of ME or not, when the ME existed on the land surface (from OV treatment to MD treatment), the alpine meadow degradation had no significant effects on infiltration. Once the ME disappeared on the land surface (from MD treatment to SD treatment), the alpine meadow degradation mainly increased the infiltration. (3) With the aggravation of alpine meadow degradation, the daily evapotranspiration first decreased and then significantly increased when the gravimetric soil water content at 0-5 cm in SD treatment (GWC5) was exceeded 19.5%, the daily evapotranspiration gradually decreased when GWC5 ranged from 9.3% to 19.5%, and had no significant changes on the evapotranspiration when GWC5 was less than 9.3%. Considering the characteristics of precipitation in alpine meadow, it was concluded that the alpine meadow degradation accelerated the evapotranspiration during the plant-growing season. (4) The effect of alpine meadow degradation on soil bulk density and saturated water capacity was concentrated at 0-10 cm. With the aggravation of alpine meadow degradation, the bulk density at 0-10 cm was first stable and then significantly increased and the saturated water capacity at 0-10 cm was first gradually increased and then significantly decreased. Our results suggested that the ME is vital for water conservation of alpine meadow and the protection of ME should be emphasized to promote the sustainable development of the ecosystem and the water supply of water towers in China.
WOS关键词HYDRAULIC-PROPERTIES ; PERMAFROST REGION ; CLIMATE-CHANGE ; WATER CONTENT ; VEGETATION ; GRASSLAND ; RESPIRATION ; GRADIENTS ; COMMUNITY ; ECOSYSTEM
WOS研究方向Water Resources
WOS记录号WOS:000957909500001
出版者WILEY
源URL[http://ir.igsnrr.ac.cn/handle/311030/190457]  
专题生态系统网络观测与模拟院重点实验室_外文论文
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining, Peoples R China
3.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Restorat Ecol Cold Reg Qinghai Prov, Xining, Peoples R China
4.Sanjiangyuan Grassland Ecosyst Natl Observat & Res, Xining, Peoples R China
5.Qinghai Haibei Natl Field Res Stn Alpine Grassland, Xining, Peoples R China
6.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining, Peoples R China
7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
8.Qinghai Vocat & Tech Coll Anim Husb & Vet Sci, Xining, Peoples R China
9.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Restorat Ecol Cold Reg Qinghai Prov, Xining 810008, Peoples R China
10.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Yongsheng,Wang, Junbang,Xu, Xinliang,et al. Impacts of alpine meadow degradation on the soil moisture and hydrological processes in the three river source region on the Qinghai Tibetan plateau[J]. HYDROLOGICAL PROCESSES,2023,37(4):e14854.
APA Yang, Yongsheng.,Wang, Junbang.,Xu, Xinliang.,Zhang, Shuping.,Li, Yuzhe.,...&Zhou, Huakun.(2023).Impacts of alpine meadow degradation on the soil moisture and hydrological processes in the three river source region on the Qinghai Tibetan plateau.HYDROLOGICAL PROCESSES,37(4),e14854.
MLA Yang, Yongsheng,et al."Impacts of alpine meadow degradation on the soil moisture and hydrological processes in the three river source region on the Qinghai Tibetan plateau".HYDROLOGICAL PROCESSES 37.4(2023):e14854.

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来源：地理科学与资源研究所

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