干旱区生态环境知识资源中心(Arid): 民勤绿洲膜果麻黄周围土壤盐渍化的主要特征因子

Arid

	民勤绿洲膜果麻黄周围土壤盐渍化的主要特征因子
其他题名	Main characteristic factors of salinization of soil around Ephedra przewalskii in the Minqin Oasis, western China
	张鸣; 李雪; 石晓妮; 郑艳萍; 叶鹤琳
来源期刊	中国水土保持科学
ISSN	1672-3007
出版年	2015
卷号	13 期号:3 页码:58-63
中文摘要	为了给民勤绿洲土壤盐渍化的改良和利用提供理论依据和技术支撑,采用相关分析和主成分分析法对民勤绿洲膜果麻黄周围土壤盐渍化的主要特征因子进行研究,结果表明:民勤绿洲膜果麻黄周围土壤的盐渍化程度主要受氯化盐、硫酸盐和碳酸氢盐的影响,而且以底聚为主。其中:膜果麻黄30 cm处土壤盐渍化的主要特征因子为Ca~(2+) 、SO_4~( 2-)、HCO_3~-、Mg~(2+)和K~+ ,盐分主要是硫酸盐和碳酸氢盐,其次是氯化盐;膜果麻黄60 cm处土壤盐渍化的主要特征因子为全盐、Cl~-、Na~+、Mg~(2+)和pH值,盐分主要是氯化盐,其次是硫酸盐和碳酸氢盐;膜果麻黄90 cm处土壤盐渍化的主要特征因子为全盐、Na~+、Cl~-和Ca~(2+) ,盐分主要是氯化盐,其次是碳酸氢盐和硫酸盐。同时,膜果麻黄可以降低其周围土壤的pH值和毒性,可以作为民勤绿洲盐渍化土壤的改良植物。
英文摘要	Desertification and salinization of the Minqin Oasis in western China are getting more and more serious in China. Ephedra przewalskii is a desert salt bush widely distributed in Minqin. In this study we took soil surrounding E. przewalskii as research object, and investigated the main characteristic factors of salinization of soil around E. przewalskii by using correlation analysis and main component analysis, aimed to provide a theoretical basis and technical support for the improvement and utilization of soil salinization in the Minqin Oasis. The results showed that E. przewalskii could reduce the pH of its soil around it. The soil pH value varied from 8.21 to 8.69 in the horizontal direction from 0 to 30 cm away from the plant; in the vertical profile, the soil pH first dropped with the soil depth increasing and then ascended, showing a "double S" pattern. The soil pH value changed from 7.89 to 8.95 at a distance of 30 to 60 cm away from the plant, while it first decreased and then increased with the soil depth increasing in the vertical profile. The soil pH value ranged from 8.50 to 8.96 at a distance of 60 to 90 cm away from the plant, while it decreased with the soil depth increasing in the vertical profile. The degree of soil salinization was mainly influenced by chloride, sulfate and bicarbonate, and profile distribution of soil salinity was in bottom accumulation. Ca~(2+) , SO_4~( 2-), HCO_3~-, Mg~(2+) and K~+ were the main characteristic factors for the salinization of soil 30 cm away from E. przewalskii , where soil salinity existed mainly as sulfate and bicarbonate, and chloride followed. Total salt content, Cl~-, Na~+, Mg~(2+) and pH were the main characteristic factors for the salinization of soil 60 cm away from E. przewalskii , where soil salinity existed mainly as chloride, and sulfate and bicarbonate followed. Total salt content, Na~+, Cl~- and Ca~(2+) were the main characteristic factors for the salinization of soil 90 cm away from E. przewalskii , where soil salinity existed mainly as chloride, and bicarbonate and sulfate followed. Our study suggests that E. przewalskii can be used to alleviate soil salinization in the Minqin Oasis.
中文关键词	膜果麻黄 ; 土壤盐渍化 ; 相关分析 ; 主成分分析 ; 民勤绿洲
英文关键词	Ephedra przewalskii soil salinization correlation analysis main component analysis Minqin Oasis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5458768
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233815
作者单位	兰州城市学院化学与环境科学学院, 城市环境污染控制高校省级重点实验室, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	张鸣,李雪,石晓妮,等. 民勤绿洲膜果麻黄周围土壤盐渍化的主要特征因子[J],2015,13(3):58-63.
APA	张鸣,李雪,石晓妮,郑艳萍,&叶鹤琳.(2015).民勤绿洲膜果麻黄周围土壤盐渍化的主要特征因子.中国水土保持科学,13(3),58-63.
MLA	张鸣,et al."民勤绿洲膜果麻黄周围土壤盐渍化的主要特征因子".中国水土保持科学 13.3(2015):58-63.