干旱区生态环境知识资源中心(Arid): Convergent and divergent responses of topsoil nitrogen and phosphorus content to nutrient addition in natural and restored alpine grasslands around the Qinghai Lake Basin

Arid

DOI	10.1016/j.agee.2019.05.010
	Convergent and divergent responses of topsoil nitrogen and phosphorus content to nutrient addition in natural and restored alpine grasslands around the Qinghai Lake Basin
	Li, Chunli 1; Luo, Shaohui 3; Ge, Shidong 4; Zhao, Liang 2; Dong, Quanmin 1; Li, Qi 2; Zhao, Xinquan 2
通讯作者	Li, Chunli ; Zhao, Xinquan
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
EISSN	1873-2305
出版年	2019
卷号	282 页码:1-12
英文摘要	The availability and variation of soil nutrients are especially important for plant growth and soil carbon accumulation in the ongoing climate change. As a climate-sensitive region, the Qinghai Lake Basin (QLB) has experienced extensive land-use transitions. A three-year manipulative experiment was conducted in two grassland types around the QLB, including a natural alpine grassland (NG) and its adjacent restored grassland (RG), to examine the responses of soil nitrogen (N) and phosphorus (P) content to nutrient application with land-use. N addition continuously increased soil NO3--N (SAN) content of NG in the whole experiment period, while displaying no detectable effect on SAN content of RG in the first experiment year. Nutrient addition presented no direct effects on soil total N (STN) content. However, N addition potentially promoted STN content indirectly by increasing SAN content, both in NG and RG. P addition significantly increased soil available P (SAP) content during the whole study period for both grasslands. Nevertheless, P addition significantly increased soil total P (STP) content of NG in the last two experiment years, while only elevating STP content of RG in the last experiment year. The results revealed that soil N and P content presented convergent and divergent responses to nutrient addition between NG and RG. STN and STP content were both positively related to growing season precipitation (GSP). SAN content was positively associated with growing season temperature in NG, and RG in N addition treatment. SAP content was consistently positively related to GSP in P addition treatment, but negatively related to GSP in the treatment without P addition, both in NG and RG. These findings highlight the importance of precipitation for soil nutrient accumulation, and imply that warming and increasing precipitation will be beneficial for the mineralization of soil N and P, respectively, in this semi-arid grassland ecosystem.
英文关键词	Alpine grassland Qinghai Lake Basin Restored grassland Soil nitrogen content Nutrient addition
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000500209500001
WOS关键词	SOIL CARBON ; SPECIES COMPOSITION ; PLANT DIVERSITY ; CO-LIMITATION ; FRESH-WATER ; TERRESTRIAL ; CHINA ; PATTERNS ; MEADOW ; STOCKS
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
EI主题词	2019-10-01
来源机构	北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310215
作者单位	1.Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810016, Qinghai, Peoples R China; 2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Qinghai, Peoples R China; 3.Qinghai Meteorol Disaster Prevent Technol Ctr, Xining 810000, Qinghai, Peoples R China; 4.Peking Univ, Coll Urban & Environm Sci, Minist Educ, Key Lab Earth Surface Proc Urban, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Li, Chunli,Luo, Shaohui,Ge, Shidong,et al. Convergent and divergent responses of topsoil nitrogen and phosphorus content to nutrient addition in natural and restored alpine grasslands around the Qinghai Lake Basin[J]. 北京大学,2019,282:1-12.
APA	Li, Chunli.,Luo, Shaohui.,Ge, Shidong.,Zhao, Liang.,Dong, Quanmin.,...&Zhao, Xinquan.(2019).Convergent and divergent responses of topsoil nitrogen and phosphorus content to nutrient addition in natural and restored alpine grasslands around the Qinghai Lake Basin.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,282,1-12.
MLA	Li, Chunli,et al."Convergent and divergent responses of topsoil nitrogen and phosphorus content to nutrient addition in natural and restored alpine grasslands around the Qinghai Lake Basin".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 282(2019):1-12.