干旱区生态环境知识资源中心(Arid): Seasonal changes of soil nitrogen mineralization along restoration gradient of sandy grassland, northern China

Arid

DOI	10.3161/15052249PJE2020.68.4.002
	Seasonal changes of soil nitrogen mineralization along restoration gradient of sandy grassland, northern China
	Lv, Peng; Zuo, Xiaoan; Sun, Shanshan; Zhang, Jing; Zhao, Shenglong; Hu, Ya
通讯作者	Zuo, XA (corresponding author), Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou 730000, Peoples R China. ; Zuo, XA (corresponding author), Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China.
来源期刊	POLISH JOURNAL OF ECOLOGY
ISSN	1505-2249
出版年	2020
卷号	68 期号:4 页码:283-295
英文摘要	Soil nitrogen mineralization strongly affects N availability, thus impacting the primary productivity in ecosystems. The seasonal environmental changes affect soil mineralization in restored sandy grasslands such as a studied mobile dune (MD), a semi-fixed dune (SFD), a fixed dune (FD) and a grassland (G). During the growing season, we examined the association of soil N mineralization rate with vegetation characteristics, soil properties and climatic factors through the multivariate stepwise regression model. The vegetation cover, species diversity, above- and belowground biomass, soil carbon, nitrogen, soil water content (SWC), pH, electrical conductivity, very fine sand, clay and silt fractions increased during sandy grassland restoration. The NH4+-N concentration in MD and SFD was higher than that in FD and G, while NO3--N and inorganic N concentration showed a reverse trend. The NH4+-N, NO3--N and inorganic N concentrations in MD, SFD and FD reached to the highest values in June, while in G they were highest in May. The net mineralization and nitrification rates increased with sandy grassland restoration; both of these rates were much greater in June than in other months at all sites. Regression analysis showed that the NO3--N concentration, SWC, pH of the soil and precipitation could explain 75% of the total variation in net nitrification rate, and the NO3--N concentration and precipitation could explain 59% of the total variation in the net mineralization rate. These results illustrate that the sandy grassland restoration can enhance the soil N availability, with soil N mineralization mainly determined by the changes of the NO3--N concentration and precipitation.
英文关键词	vegetation characteristics soil properties nitrogen mineralization growing season Horqin sandy grassland restoration
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000617763200002
WOS关键词	PLANT-SPECIES RICHNESS ; OASIS-DESERT ECOTONE ; DUNE STABILIZATION ; MICROBIAL BIOMASS ; VEGETATION RESTORATION ; SECONDARY SUCCESSION ; ABANDONED FARMLAND ; INNER-MONGOLIA ; LOESS PLATEAU ; RIVER VALLEY
WOS类目	Ecology
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/2XILL650/349132
作者单位	[Lv, Peng; Zuo, Xiaoan; Sun, Shanshan; Zhang, Jing] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou 730000, Peoples R China; [Lv, Peng; Zuo, Xiaoan; Zhang, Jing; Zhao, Shenglong; Hu, Ya] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China; [Lv, Peng; Sun, Shanshan; Zhang, Jing; Zhao, Shenglong; Hu, Ya] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Lv, Peng,Zuo, Xiaoan,Sun, Shanshan,et al. Seasonal changes of soil nitrogen mineralization along restoration gradient of sandy grassland, northern China[J],2020,68(4):283-295.
APA	Lv, Peng,Zuo, Xiaoan,Sun, Shanshan,Zhang, Jing,Zhao, Shenglong,&Hu, Ya.(2020).Seasonal changes of soil nitrogen mineralization along restoration gradient of sandy grassland, northern China.POLISH JOURNAL OF ECOLOGY,68(4),283-295.
MLA	Lv, Peng,et al."Seasonal changes of soil nitrogen mineralization along restoration gradient of sandy grassland, northern China".POLISH JOURNAL OF ECOLOGY 68.4(2020):283-295.