气候变化领域集成服务门户(CCPortal): Grazing exclusion had greater effects than nitrogen addition on soil and plant community in a desert steppe, Northwest of China

CCPortal

DOI	10.1186/s12870-021-03400-z
	Grazing exclusion had greater effects than nitrogen addition on soil and plant community in a desert steppe, Northwest of China
	Li, Mengru; Wang, Lilong; Li, Junjun; Peng, Zhenling; Wang, Liang; Zhang, Xinfang; Xu, Shijian
通讯作者	Xu, SJ (通讯作者)，Lanzhou Univ, Sch Life Sci, 222 Southern Tianshui Rd, Lanzhou 730000, Peoples R China.
发表日期	2022
ISSN	1471-2229
卷号	22 期号:1
英文摘要	Background The impacts of increasing nitrogen (N) deposition and overgrazing on terrestrial ecosystems have been continuously hot issues. Grazing exclusion, aimed at restoration of grassland ecosystem function and service, has been extensively applied, and considered a rapid and effective vegetation restoration method. However, the synthetic effects of exclosure and N deposition on plant and community characteristics have rarely been studied. Here, a 4-year field experiment of N addition and exclusion treatment had been conducted in the desert steppe dominated by Alhagi sparsifolia and Lycium ruthenicum in northwest of China, and the responses of soil characteristics, plant nutrition and plant community to the treatments had been analyzed. Results The grazing exclusion significantly increased total N concentration in the surface soil (0-20 cm), and increased plant height, coverage (P < 0.05) and aboveground biomass. Specifically, A. sparsifolia recovered faster both in individual and community levels than L. ruthenicum did after exclusion. There was no difference in response to N addition gradients between the two plants. Conclusions Our findings suggest that it is exclusion rather than N addition that has greater impacts on soil properties and plant community in desert steppe. Present N deposition level has no effect on plant community of desert steppe based on short-term experimental treatments.
关键词	DEGRADED SANDY GRASSLAND NUTRIENT RESORPTION INNER-MONGOLIA CARBON SEQUESTRATION REACTIVE NITROGEN DEPOSITION TERRESTRIAL LEAVES VEGETATION EFFICIENCY
英文关键词	Nitrogen addition; Exclosure; Desert steppe; Plant community; Nutrient
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000750826700002
来源期刊	BMC PLANT BIOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254526
作者单位	[Li, Mengru; Wang, Lilong; Li, Junjun; Peng, Zhenling; Zhang, Xinfang; Xu, Shijian] Lanzhou Univ, Sch Life Sci, 222 Southern Tianshui Rd, Lanzhou 730000, Peoples R China; [Wang, Lilong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Wang, Liang] Adm Anxi Extra Arid Desert Natl Nat Reserve, Guazhou 736100, Peoples R China
推荐引用方式 GB/T 7714	Li, Mengru,Wang, Lilong,Li, Junjun,et al. Grazing exclusion had greater effects than nitrogen addition on soil and plant community in a desert steppe, Northwest of China[J]. 中国科学院西北生态环境资源研究院,2022,22(1).
APA	Li, Mengru.,Wang, Lilong.,Li, Junjun.,Peng, Zhenling.,Wang, Liang.,...&Xu, Shijian.(2022).Grazing exclusion had greater effects than nitrogen addition on soil and plant community in a desert steppe, Northwest of China.BMC PLANT BIOLOGY,22(1).
MLA	Li, Mengru,et al."Grazing exclusion had greater effects than nitrogen addition on soil and plant community in a desert steppe, Northwest of China".BMC PLANT BIOLOGY 22.1(2022).