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 1,2,10; Zhao, Lin 1,2; Wu, Xiaodong 1; Fang, Hongbing 3; Zhao, Yonghua 1; Hu, Guojie 1; Yue, Guangyang 1; Sheng, Yu 4; Wu, Jichun 4; Chen, Ji 4
刊名	Science of the Total Environment
	2018-05-01
卷号	622-623 页码:192-202
关键词	Ecosystems Permafrost Soil moisture Stoichiometry Textures Topography Vegetation Alpine grasslands Changing environment Field investigation Nutrient interactions Nutrient limitations Plant interactions Soil nutrients Tibetan Plateau
ISSN号	00489697
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. © 2017 Elsevier B.V.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	Elsevier B.V., Netherlands
WOS记录号	WOS:000426349000022
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150184]
专题	土木工程学院
作者单位	1.Cryosphere Research Station on the Qinghai-Tibetan Plateau, State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou; 730000, China; 2.University of Chinese Academy of Sciences, Beijing; 100049, China; 3.School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou; 730070, China; 4.State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou; 730000, China; 5.Guizhou Institute of Prataculture, Guizhou Academy of Agricultural Sciences, Guiyang; 550006, China; 6.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 7.Agricultural and Forestry Experiment Station, Palmer Research Center, University of Alaska Fairbanks, Palmer; AK; 99645, United States; 8.State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Gansu Desert Control Research Institute, Lanzhou; 730070, China; 9.State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing; 210008, China; 10.College of Earth Environmental Sciences, Lanzhou University, Lanzhou; 730000, 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,2018,622-623:192-202.
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,622-623,192-202.
MLA	Tian, Liming,et al."Soil moisture and texture primarily control the soil nutrient stoichiometry across the Tibetan grassland".Science of the Total Environment 622-623(2018):192-202.