Soil moisture and texture primarily control the soil nutrient stoichiometry across the Tibetan grassland

doi:10.1016/j.scitotenv.2017.11.331

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Soil moisture and texture primarily control the soil nutrient stoichiometry across the Tibetan grassland
	Tian, Liming 2,3,10; Zhao, Lin 2,3; Wu, Xiaodong 2; Fang, Hongbing 4; Zhao, Yonghua 2; Hu, Guojie 2; Yu, Guangyang 2; Sheng, Yu 5; Wu, Jichun 5; Chen, Ji 5
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2018-05
卷号	622 页码:192-202
关键词	Alpine grassland Nutrient interaction Nutrient stoichiometry Permafrost Soil nutrients Tibetan Plateau
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2017.11.331
英文摘要	Soil nutrient stoichiometry and its environmental controllers play vital roles in understanding soil-plant interaction and nutrient cycling under a changing environment, while they remain poorly understood in alpine grassland due to lack of systematic field investigations. We examined the patterns and controls of soil nutrients stoichiometry for the top 10 cm soils across the Tibetan ecosystems. Soil nutrient stoichiometry varied substantially among vegetation types. Alpine swamp meadow had larger topsoil C:N, C:P, N: P, and C:K ratios compared to the alpine meadow, alpine steppe, and alpine desert. In addition, the presence or absence of permafrost did not significantly impact soil nutrient stoichiometry in Tibetan grassland. Moreover, clay and silt contents explained approximately 32.5% of the total variation in soil C: N ratio. Climate, topography, soil properties, and vegetation combined to explain 10.3-13.2% for the stoichiometry of soil C: P, N: P, and C: K. Furthermore, soil C and N were weakly related to P and K in alpine grassland. These results indicated that the nutrient limitation in alpine ecosystem might shifts from N-limited to P-limited or K-limited due to the increase of N deposition and decrease of soil P and K contents under the changing climate conditions and weathering stages. Finally, we suggested that soil moisture and mud content could be good predictors of topsoil nutrient stoichiometry in Tibetan grassland. (C) 2017 Elsevier B.V. All rights reserved.
资助项目	State Key Laboratory of Cryosphere Sciences[SKLCS-ZZ-2017]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000426349000022
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32683]
专题	土木工程学院
通讯作者	Zhao, Lin
作者单位	1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibetan Plateau, Lanzhou 730000, Gansu, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, Lanzhou 730070, Gansu, Peoples R China 5.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China 6.Guizhou Acad Agr Sci, Guizhou Inst Prataculture, Guiyang 550006, Guizhou, Peoples R China 7.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Gansu, Peoples R China 8.Univ Alaska Fairbanks, Palmer Res Ctr, Agr & Forestry Expt Stn, Palmer, AK 99645 USA 9.Gansu Desert Control Res Inst, State Key Lab Breeding Base Desertificat & Aeolia, Lanzhou 730070, Gansu, Peoples R China 10.Lanzhou Univ, Coll Earth Environm Sci, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Tian, Liming,Zhao, Lin,Wu, Xiaodong,et al. Soil moisture and texture primarily control the soil nutrient stoichiometry across the Tibetan grassland[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,622:192-202.
APA	Tian, Liming.,Zhao, Lin.,Wu, Xiaodong.,Fang, Hongbing.,Zhao, Yonghua.,...&Zhang, Ganlin.(2018).Soil moisture and texture primarily control the soil nutrient stoichiometry across the Tibetan grassland.SCIENCE OF THE TOTAL ENVIRONMENT,622,192-202.
MLA	Tian, Liming,et al."Soil moisture and texture primarily control the soil nutrient stoichiometry across the Tibetan grassland".SCIENCE OF THE TOTAL ENVIRONMENT 622(2018):192-202.