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当前位置: 首页 > 文章 > 黄土高原沟壑区土壤酶活性对植被恢复的响应 应用生态学报 2012,23 (12) 3355-3360
Position: Home > Articles > Responses of soil enzyme activities to re-vegetation in gully Loess Plateau of Northwest China Chinese Journal of Applied Ecology 2012,23 (12) 3355-3360

黄土高原沟壑区土壤酶活性对植被恢复的响应

作  者：
李林海;邱莉萍;梦梦
单  位：
西北农林科技大学水土保持研究所;北京自然博物馆;中国野生动物保护协会
关键词：
植被恢复;土壤酶活性;坡面;土壤剖面;黄土高原沟壑区
摘  要：
结合野外调查与室内分析,研究了黄土高原沟壑区小流域自然坡面和不同植被恢复条件下剖面土壤酶活性的分布特征,以及土壤酶活性对植被恢复的响应.结果表明:黄土高原沟壑区小流域坡地土壤的脲酶、蔗糖酶和碱性磷酸酶活性为高度变异指标,过氧化氢酶活性则为弱变异指标.土壤剖面酶活性受植被恢复措施的显著影响,随土层的加深,土壤脲酶、蔗糖酶和碱性磷酸酶活性逐渐降低,过氧化氢酶活性升高.3种水解酶活性之间呈显著正相关,并与土壤物理性质显著负相关,与土壤化学性质显著正相关;过氧化氢酶活性除与含水量和pH正相关外,与其他理化性质呈负相关.土壤水解酶类可以敏感指示植被恢复的土壤效应,植被恢复措施可以改善表层和深层土壤的生物学性质.
译  名：
Responses of soil enzyme activities to re-vegetation in gully Loess Plateau of Northwest China
作  者：
LI Lin-hai1,2,QIU Li-ping3,MENG Meng4(1Beijing Museum of Nature History,Beijing 100050,China;2College of Biological Science and Technology,Beijing Forestry University,Beijing 100083,China;3Institute of Soil and Water Conservation,Northwest A & F University,Yangling 712100,Shaanxi,China;4China Wildlife Conservation Association,Beijing 100714,China)
关键词：
re-vegetation;soil enzyme activity;slope;soil profile;gully Loess Plateau
摘  要：
In combining field investigation with laboratory analysis,this paper studied the distribution characteristics of soil enzyme activities along the soil profiles and natural slopes with different re-vegetation treatments in gully Loess Plateau,aimed to assess the responses of the soil enzyme activities to re-vegetation.In the study area,the activities of soil urease,invertase and alkaline phosphatase along natural slopes were highly varied,but the activity of soil catalase was in adverse.The profile distribution of the soil enzyme activities varied significantly with vegetation type,and with increasing soil depth,the activities of soil urease,invertase and alkaline phosphatase decreased while the catalase activity increased.There existed significant positive correlation among the three hydrolases activities.The activities of the three hydrolases were all significantly negatively correlated with soil physical properties and positively correlated with soil chemical properties,while the soil catalase activity was positively correlated with soil moisture content and pH and negatively correlated with other soil physiochemical properties.It was suggested that the activities of soil urease,invertase and alkaline phosphatase in gully Loess Plateau could be used as the sensitive indicators for the soil responses to the re-vegetation in the Plateau,and re-vegetation could improve the biological properties in both surface and deeper soil layers.

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