干旱区生态环境知识资源中心(Arid): Effects of fertilization on population density and productivity of herbaceous plants in desert steppe

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	Effects of fertilization on population density and productivity of herbaceous plants in desert steppe
	Su Jieqiong; Li Xinrong; Yang Haotian
来源期刊	Sciences in Cold and Arid Regions
ISSN	1674-3822
出版年	2014
卷号	6 期号:3 页码:219-225
英文摘要	In order to investigate the impacts of fertilization on population density and productivity on herbaceous plants in desert steppe, nitrogen (N), phosphorus (P), and N-P addition experiments were performed. Each fertilizer treatment included four addition levels, i.e., 0, 5, 10, and 20 g/m~2. The results indicated that population density decreased as fertilization levels increased regardless of the sort of fertilizer. More specifically, total density as well as density of Artemisia capillaris, Allium polyrhizum, and Enneapogon brachystachyus decreased significantly in 20 g/m~2 treated plots, as compared with the control plots. Fertilization effects on aboveground and root biomasses were extremely similar to that found in population density; that is, both total aboveground biomass and aboveground biomasses for A. capillaris, A. polyrhizum, and E. brachystachyus were negatively correlated with increasing fertilization levels, with all determination coefficients (R~2) greater than 0.80. Therefore, in the case of desert regions (annual precipitation <180 mm), fertilization would inhibit population density and productivity of herbaceous plants.
英文关键词	desert steppe herbaceous vegetation nitrogen fertilizer phosphorus fertilizer biomass
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5173024
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335375
作者单位	Su Jieqiong, Shapotou Desert Experimental Research Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Li Xinrong, Shapotou Desert Experimental Research Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Yang Haotian, Shapotou Desert Experimental Research Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Su Jieqiong,Li Xinrong,Yang Haotian. Effects of fertilization on population density and productivity of herbaceous plants in desert steppe[J],2014,6(3):219-225.
APA	Su Jieqiong,Li Xinrong,&Yang Haotian.(2014).Effects of fertilization on population density and productivity of herbaceous plants in desert steppe.Sciences in Cold and Arid Regions,6(3),219-225.
MLA	Su Jieqiong,et al."Effects of fertilization on population density and productivity of herbaceous plants in desert steppe".Sciences in Cold and Arid Regions 6.3(2014):219-225.