干旱区生态环境知识资源中心(Arid): Vegetation restoration drives the dynamics and distribution of nitrogen and phosphorous pools in a temperate desert soil-plant system

Arid

DOI	10.1016/j.jenvman.2019.04.108
	Vegetation restoration drives the dynamics and distribution of nitrogen and phosphorous pools in a temperate desert soil-plant system
	Yang Haotian; Wang Zengru; Li Xiaojun; Gao Yanhong
通讯作者	Wang Zengru
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2019
卷号	245 页码:200-209
英文摘要	The role vegetation restoration and succession play in regulating Nitrogen (N) and Phosphorous (P) pools remains unexplored and poorly understood. To examine the effects of vegetation restoration and succession from a shifting sand dune to restored vegetation at different ages (23, 33, 50, and 58 years) on the dynamics and distribution of N and P pools in a soil-plant system, a comprehensive field investigation was conducted and N(P) concentrations and densities of soil, shrubs (including leaves, new branches, aging branches, and roots), and grass (including aboveground, roots, and litter) at each site were analyzed and quantified. We found that total N (TN) and total P (TP) density for the plant-soil system, in live shrub biomass as well as soil TN (STN) density in subsoil (10-100 cm), decreased between 23 and 50 years, and then increased from 50 to 58 years. STN and soil TP (STP) densities in topsoil (0-10 cm), and N and P densities of herbage and dead shrubs, continued to increase with restoration. N and P were primarily stored in soils and accounted for 89.83%-92.06% and 99.33%-99.48% of the TN and TP pools, respectively. In the first 23 years, live shrubs made up the second largest N and P pools, however, herbage made up the second largest N and P pools after 23 years. The ratios of N and P in herbage to TN and TP density increased from 3.71% to 6.31%, and 0.33%-0.43%, gradually approaching the native site (6.39% and 0.46%). The ratios of N and P in live shrubs to TN and TP density in the soil-plant system decreased from 4.55% to 1.08% and from 0.33% to 0.13%. Our results indicated that the restored ecosystem was a N(P) source from 0 to 50 (0-23) years, and a N(P) sink from 50 to 58 (23-58) years, with strong potential for accumulating more N (147.18 g m(-2)) and P (102.67 g m(-2)) to reach the natural site levels. These results suggest that vegetation restoration and succession may profoundly alter N and P geochemical cycles through N(P) redistribution in a temperate desert plant-soil system. Proper N and P addition at the initial stage of vegetation restoration may promote the recovery of desertified land.
英文关键词	Nitrogen pool Phosphorous pool Distribution patterns Vegetation restoration Restoration series
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000473380300022
WOS关键词	TENGGER DESERT ; LIMITATION ; CARBON ; ECOSYSTEMS ; LAND ; TRANSFORMATIONS ; REVEGETATION ; RESORPTION ; NUTRIENTS ; RESPONSES
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216969
作者单位	Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yang Haotian,Wang Zengru,Li Xiaojun,et al. Vegetation restoration drives the dynamics and distribution of nitrogen and phosphorous pools in a temperate desert soil-plant system[J],2019,245:200-209.
APA	Yang Haotian,Wang Zengru,Li Xiaojun,&Gao Yanhong.(2019).Vegetation restoration drives the dynamics and distribution of nitrogen and phosphorous pools in a temperate desert soil-plant system.JOURNAL OF ENVIRONMENTAL MANAGEMENT,245,200-209.
MLA	Yang Haotian,et al."Vegetation restoration drives the dynamics and distribution of nitrogen and phosphorous pools in a temperate desert soil-plant system".JOURNAL OF ENVIRONMENTAL MANAGEMENT 245(2019):200-209.