干旱区研究

干旱区研究 ›› 2012, Vol. 29 ›› Issue (3): 405-412.

• 水土资源 • 上一篇    下一篇

新疆甘家湖湿地边缘带土壤酶活性研究

马晓飞1,2, 李艳红1,2, 杨爱霞1,2, 楚新正1,2   

    1. 新疆维吾尔自治区重点实验室，新疆干旱区湖泊环境与资源实验室，新疆 乌鲁木齐 830054；
    2. 新疆师范大学 地理科学与旅游学院，新疆 乌鲁木齐 830054
  • 收稿日期:2011-08-10 修回日期:2011-10-21 出版日期:2012-05-15 发布日期:2012-05-30
  • 通讯作者: 李艳红.E-mail:lyh0704@126.com
  • 作者简介:马晓飞（1988-），男，新疆额敏人，在读本科生，主要从事干旱区环境退化与治理研究.E-mail:364982725@qq.com
  • 基金资助:

    新疆维吾尔自治区重点实验室“新疆干旱区湖泊环境与资源实验室”基金资助；新疆维吾尔自治区自然科学基金（200821168）；新疆维吾尔自治区自然科学基金项目：准噶尔盆地南部梭梭荒漠生态系统退化机理研究（2011211A033）；新疆师范大学校级重点实验室“干旱区湖泊环境演变实验室”基金；新疆师范大学2011年暑期“三下乡”社会实践立项资助

Study on Soil Enzyme Activity in the Marginal Zone of the Ganjiahu Wetland in Xinjiang

 MA  Xiao-Fei1,2, LI  Yan-Hong1,2, YANG  Ai-Xia1,2, CHU  Xin-Zheng1,2   

    1. Key Laboratory of Xinjiang Uygur Autonomous Region; Xinjiang Laboratory of Lake Environment 
      and Resources in Arid Area, Urumqi 830054, China;
    2.  College of Geographic Science and Tourism, Xinjiang Normal University, Urumqi 830054, China
  • Received:2011-08-10 Revised:2011-10-21 Online:2012-05-15 Published:2012-05-30

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被引次数

13

摘要： 通过对甘家湖湿地不同植物群落及人为和鼠类干扰下的4种酶活性的研究，结果表明：① 脲酶、过氧化氢酶的活性是芦苇群落>胡杨群落>梭梭群落>羊草群落；蛋白酶为羊草群落>芦苇群落>胡杨群落>梭梭群落；蔗糖酶为芦苇群落>梭梭群落>胡杨群落>羊草群落；② 脲酶、过氧化氢酶和蛋白酶的时间变化中，最大值均出现在8月，最小值出现在5月或10月，蔗糖酶的最大值出现在5月，然后逐渐降低，到10月有所增加；③ 在垂直变化上，脲酶、蛋白酶在芦苇群落、梭梭群落随着土层深度的增加而降低，蔗糖酶随着土层深度的增加，呈现出由高到低再到高的变化；④ 线性回归分析表明，全N、有机质是影响土壤酶活性的重要因素，各个酶反应之间既有专一性，又有关联性；⑤ 与无人践踏区、无人开垦区和无人放牧区相比，践踏区对脲酶、过氧化氢酶和蛋白酶影响较大，开垦区对各种酶活性都有影响，且各种酶活性均增强，以脲酶和过氧化氢酶表现显著；放牧区对脲酶、蛋白酶影响较大。此外，各影响区中脲酶、过氧化氢酶、蛋白酶和蔗糖酶均在8月呈现出不同程度的峰值；⑥ 与无鼠害区相比，前者脲酶、过氧化氢酶、蛋白酶和蔗糖酶含量均降低，以脲酶表现最为显著，且鼠害区在5～10月各种酶活性的增幅小于无鼠害区。

关键词: 湿地, 人类活动, 植物群落, 鼠害, 土壤酶活性, 甘家湖

Abstract: In this study, the activity of 4 soil enzymes affected strongly by different vegetation communities, anthropogenic factors and murine in the marginal zone of the Ganjiahu Wetland was lucubrated. The results are as follows: (1) The activity of urease and catalase was in an order of Phragmites australis community > Populus euphratica community > Holoxylon ammodendron community > Aneurolepidum chinense community, that of proteinase in an order of A. chinense community > P. australis community > P. euphratica community > H. ammodendron community, and that of sucrase in an order of P. australis community > H. ammodendron community > P. euphratica  community > A. chinense community; (2) Temporally, the maximum values of urease, catalase and proteinase contents occurred in August, and the minimum ones in May or October, but the maximum value of sucrase content occurred in May, then it was decreased gradually, and increased to some extent in October; (3) Vertically, urease and proteinase contents in P. australis  and H. ammodendron communities were decreased with the increase of soil depth, but the sucrase content was decreased at first and then increased with the increase of soil depth; (4) Linear regression analysis revealed that total N and organic matter content were the important factors affecting soil enzymatic activity; (5) Impact of trample on soil enzyme activity was serious, reclamation could increase the activity of these enzymes, especially that of urease and catalase. Impact of grazing on urease and proteinase was also serious. In addition, all the peak values of urease, catalase, proteinase and sucrase occurred in August; (6) The contents of urease, catalase, proteinase and sucrase were low in the areas with mice destruction compared with that in the micefree areas, especially the content of urease. The increase rates of activity of these enzymes in the areas with mice destruction were lower than those in the micefree areas during the period from May to August.

Key words: wetland, human activity, vegetation community, mice destruction, soil enzymatic activity, Ganjiahu Lake