NWIPB OpenIR
Warming and grazing increase mineralization of organic P in an alpine meadow ecosystem of Qinghai-Tibet Plateau, China
Rui, Yichao1,2,3; Wang, Yanfen1; Chen, Chengrong2,4; Zhou, Xiaoqi1,2,3; Wang, Shiping5; Xu, Zhihong2,3; Duan, Jichuang2,3,6; Kang, Xiaoming1; Lu, Shunbao2,3; Luo, Caiyun6
2012-08-01
发表期刊PLANT AND SOIL
ISSN0032-079X
卷号357期号:1-2页码:73-87
文章类型Article
摘要Little is known about the soil phosphorus (P) biogeochemical cycling in response to combined warming and grazing, especially in the alpine meadow ecosystem of the Qinghai-Tibet Plateau. Here, we used a free-air temperature enhancement system in a controlled warming-grazing experiment to test the hypothesis that combined warming and grazing would significantly accelerate mineralization of soil organic P. A two factorial design of warming (1.2-1.7A degrees C temperature increase) and moderate grazing was utilized. A fractionation method was applied to investigate the sizes of different soil inorganic and organic P fractions. Results showed that both warming and grazing significantly decreased the quantity of organic P extracted by first NaOH (N(I)Po), as well as the total extractable organic P (TPo) at the 0-10 cm depth. Warming also decreased the total P of soil at 0-10 cm. The combined warming and grazing treatment (WG) led to the reduction of major soil organic P fractions (N(I)Po, TPo) by 40-48% and 28-32%, respectively compared with other treatments at 0-10 cm. The activities of acid and alkaline phosphomonoesterase (AcPME and AlPME) were both enhanced by warming and grazing, and their interaction. Decreased concentrations of soil N(I)Po and TPo were accompanied by increased AcPME activity (P < 0.01) and soil temperature (P < 0.05), indicating the enhanced mineralization of organic P under rising temperature. Meanwhile, leaf biomass P of two major species (Potentilla anserine and Gentiana straminea) within these plots were significantly enhanced by either grazing or warming. The microbial mineralization of soil organic P could be strongly increased under combined warming and grazing conditions as driven by increasing plant demand for P and enhanced microbial activities.; Little is known about the soil phosphorus (P) biogeochemical cycling in response to combined warming and grazing, especially in the alpine meadow ecosystem of the Qinghai-Tibet Plateau. Here, we used a free-air temperature enhancement system in a controlled warming-grazing experiment to test the hypothesis that combined warming and grazing would significantly accelerate mineralization of soil organic P.
关键词Warming Grazing Alpine Meadow Soil Phosphorus Cycling Soil Phosphatase Activities
WOS标题词Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]WET TROPICAL FOREST ; CLIMATE-CHANGE ; UPLAND SOILS ; MEDITERRANEAN SHRUBLAND ; PHOSPHATASE-ACTIVITY ; NITROGEN DEPOSITION ; COMMUNITY STRUCTURE ; MICROBIAL BIOMASS ; GRASSLAND SOILS ; ENZYME-ACTIVITY
收录类别SCI
语种英语
WOS研究方向Agriculture ; Plant Sciences
WOS类目Agronomy ; Plant Sciences ; Soil Science
WOS记录号WOS:000306552700008
引用统计
被引频次:69[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/3638
专题中国科学院西北高原生物研究所
作者单位1.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
2.Griffith Univ, Environm Futures Ctr, Brisbane, Qld 4111, Australia
3.Griffith Univ, Sch Biomol & Phys Sci, Brisbane, Qld 4111, Australia
4.Griffith Univ, Griffith Sch Environm, Brisbane, Qld 4111, Australia
5.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China
6.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, NW Inst Plateau Biol, Xining 810008, Peoples R China
推荐引用方式
GB/T 7714
Rui, Yichao,Wang, Yanfen,Chen, Chengrong,et al. Warming and grazing increase mineralization of organic P in an alpine meadow ecosystem of Qinghai-Tibet Plateau, China[J]. PLANT AND SOIL,2012,357(1-2):73-87.
APA Rui, Yichao.,Wang, Yanfen.,Chen, Chengrong.,Zhou, Xiaoqi.,Wang, Shiping.,...&Luo, Caiyun.(2012).Warming and grazing increase mineralization of organic P in an alpine meadow ecosystem of Qinghai-Tibet Plateau, China.PLANT AND SOIL,357(1-2),73-87.
MLA Rui, Yichao,et al."Warming and grazing increase mineralization of organic P in an alpine meadow ecosystem of Qinghai-Tibet Plateau, China".PLANT AND SOIL 357.1-2(2012):73-87.
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