干旱区生态环境知识资源中心(Arid): 荒漠盐生植物根际土壤酶活性的变化

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	荒漠盐生植物根际土壤酶活性的变化
其他题名	Dynamics of soil enzyme activity in the rhizosphere of desert halophyte
	弋良朋 1; 马健 2; 李彦2
ISSN	1671-3990
出版年	2009
卷号	17 期号:3 页码:500-505
中文摘要	利用根袋法研究了荒漠盐土和灌耕灰漠土中6种不同荒漠盐生植物根际养分和酶活性特征.结果表明:两种土壤中,根际土全氮含量比非根际土高,但全磷却比非根际土低.根际土有效态养分的变化则与全态相反,6种植物的根际土有效氮含量均显著低于非根际土,除芦苇外,根际土有效磷含量均高于非根际土.6种植物中,钠猪毛菜根际土有效氮亏缺最高,有效磷富集也最少.分析测定了根际土和非根际土转化酶、蛋白酶、过氧化氢酶、脲酶、中性磷酸酶和碱性磷酸酶活性及其与土壤养分的关系.结果表明:过氧化氢酶、脲酶和蛋白酶在两种土壤的植物根际表现出相反的变化,荒漠盐土中,根际土3种酶的活性均高于非根际土;而灌耕灰漠土的根际土3种酶活性均低于非根际土.荒漠盐土碱性磷酸酶、过氧化氢酶和转化酶与几种主要养分含量有很强的相关性,较好地体现了荒漠盐土根际的养分状况,也说明盐生植物对荒漠盐土酶活性有较大的影响.
英文摘要	A rhizobag experiment was conducted in desert solonchak and cultivated gray desert soils to investigate nutrient content and soil enzyme activity in the rhizospheres of six desert halophytes. The results show significant increase in total N and decrease in total P in the rhizosphere in comparison with bulk soil. Available N and P have inverse dynamics in that while available N decreases, available P increases, except for Phragmites communis Trin. Available N deficit is highest while accumulated available P is lowest in Salsola nitraria Pall among the six halophytes. Analysis for sucrase, protease, urease, neutral phospherease, alkaline phosphcrease and catalase activity as well as its relationship with soil nutrient content shows inverse dynamics for sucrase, protease and catalase in both soil rhizospheres. In solonchak soils, the activity of the three soil enzymes in the rhizosphere is generally higher than in bulk soils while that in cultivated gray-desert soils are lower. In solonchak soils, the activity of alkaline phosphcrease, catalase and invertase is significantly related with soil nutrient content, which could be a strong indicator of soil nutrient status. The results suggest significant impact of halophyte on enzyme activity in desert solonchak.
中文关键词	荒漠盐土 ; 灌耕灰漠土 ; 根际 ; 盐生植物 ; 土壤养分 ; 土壤酶活性
英文关键词	Desert solonchak soil Cultivated gray desert soil Rhizosphere Halophyte Soil nutrient Soil enzyme activity
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:3613286
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224606
作者单位	1.天津师范大学,城市与环境科学学院, 天津 300387, 中国; 2.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	弋良朋,马健,李彦. 荒漠盐生植物根际土壤酶活性的变化[J]. 中国科学院新疆生态与地理研究所,2009,17(3):500-505.
APA	弋良朋,马健,&李彦.(2009).荒漠盐生植物根际土壤酶活性的变化.,17(3),500-505.
MLA	弋良朋,et al."荒漠盐生植物根际土壤酶活性的变化".17.3(2009):500-505.