干旱区生态环境知识资源中心(Arid): Community structure and carbon and nitrogen storage of sagebrush desert under grazing exclusion in Northwest China

Arid

	Community structure and carbon and nitrogen storage of sagebrush desert under grazing exclusion in Northwest China
	Dong Yiqiang; Sun Zongjiu; An Shazhou; Jiang Shasha; Wei Peng
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2020
卷号	12 期号:2 页码:239-251
英文摘要	Overgrazing is regarded as one of the key factors of vegetation and soil degradation in the arid and semi-arid regions of Northwest China. Grazing exclusion (GE) is one of the most common pathways used to restore degraded grasslands and to improve their ecosystem services. Nevertheless, there are still significant controversies concerning GE's effects on grassland diversity as well as carbon (C) and nitrogen (N) storage. It remains poorly understood in the arid desert regions, whilst being essential for the sustainable use of grassland resources. To assess the effects of GE on community characteristics and C and N storage of desert plant community in the arid desert regions, we investigated the community structure and plant biomass, as well as C and N storage of plants and soil (0-100 cm depth) in short-term GE (three years) plots and adjacent long-term freely grazing (FG) plots in the areas of sagebrush desert in Northwest China, which are important both for spring-autumn seasonal pasture and for ecological conservation. Our findings indicated that GE was beneficial to the average height, coverage and aboveground biomass (including stems, leaves and inflorescences, and litter) of desert plant community, to the species richness and importance values of subshrubs and perennial herbs, and to the biomass C and N storage of aboveground parts (P<0.05). However, GE was not beneficial to the importance values of annual herbs, root/shoot ratio and total N concentration in the 0-5 and 5-10 cm soil layers (P<0.05). Additionally, the plant density, belowground biomass, and soil organic C concentration and C storage in the 0-100 cm soil layer could not be significantly changed by short-term GE (three years). The results suggest that, although GE was not beneficial for C sequestration in the sagebrush desert ecosystem, it is an effective strategy for improving productivity, diversity, and C and N storage of plants. As a result, GE can be used to rehabilitate degraded grasslands in the arid desert regions of Northwest China.
英文关键词	grazing exclusion desert plant community biomass C storage N storage fencing arid desert regions
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6696732
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336274
作者单位	Dong Yiqiang, College of Pratacultural and Environmental Science, Xinjiang Agricultural University;;Key Laboratory of Grassland Resources and Ecology of Xinjiang;;Post-doctoral Mobile Station of Xinjiang Agricultural University, ;;Key Laboratory of Grassland Resources and Ecology of Xinjiang;;, Urumqi;;Urumqi;;Urumqi, ;;;; 830052;;830052;;830052.; Sun Zongjiu, College of Pratacultural and Environmental Science, Xinjiang Agricultural University;;Key Laboratory of Grassland Resources and Ecology of Xinjiang, ;;Key Laboratory of Grassland Resources and Ecology of Xinjiang, Urumqi;;Urumqi, ;; 830052;;830052.; An Shazhou, College of Pratacultural and Environmental Science, Xinjiang Agricultural University;;Key Laboratory of Grassland Resources and Ecology of Xinjiang, ;;Key Laboratory of Grassland Resources and Ecology of Xinjiang, Urumqi;;Urumqi, ;; 830052;;830052.; Jiang Shasha, College of Pratacultural and Environmental Science, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China.; Wei Peng, Co...
推荐引用方式 GB/T 7714	Dong Yiqiang,Sun Zongjiu,An Shazhou,et al. Community structure and carbon and nitrogen storage of sagebrush desert under grazing exclusion in Northwest China[J],2020,12(2):239-251.
APA	Dong Yiqiang,Sun Zongjiu,An Shazhou,Jiang Shasha,&Wei Peng.(2020).Community structure and carbon and nitrogen storage of sagebrush desert under grazing exclusion in Northwest China.Journal of Arid Land,12(2),239-251.
MLA	Dong Yiqiang,et al."Community structure and carbon and nitrogen storage of sagebrush desert under grazing exclusion in Northwest China".Journal of Arid Land 12.2(2020):239-251.