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中国农学通报 ›› 2016, Vol. 32 ›› Issue (14): 138-145.doi: 10.11924/j.issn.1000-6850.casb15120157

所属专题: 生物技术 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

艾比湖地区融雪期梭梭和柽柳林地土壤酶活性研究

马晓飞,楚新正,马 倩   

  1. 新疆师范大学 地理科学与旅游学院 新疆 乌鲁木齐,新疆师范大学 地理科学与旅游学院 新疆 乌鲁木齐,新疆师范大学 地理科学与旅游学院 新疆 乌鲁木齐
  • 收稿日期:2015-12-29 修回日期:2016-02-16 接受日期:2016-02-25 出版日期:2016-05-17 发布日期:2016-05-17
  • 通讯作者: 马晓飞
  • 基金资助:
    国家自然科学基金“艾比湖湿地边缘带景观格局演变与生态服务功能关系的定量研究”(41261046);新疆师范大学地理学博士点支撑学科开放课题基金项目(XJNU-DL-201501)。

Soil Enzyme Activity of Haloxylon Ammondendron and Tamarix Chinensis Forest Land in Ebinur Lake Region during Snow Melting Period

楚新正 and   

  • Received:2015-12-29 Revised:2016-02-16 Accepted:2016-02-25 Online:2016-05-17 Published:2016-05-17

摘要: 融雪期作为土壤冻融作用的一个特定时期,对土壤酶活性具有重要影响。为深入了解干旱荒漠区主要优势种融雪期土壤生态过程。于2013年3月,对艾比湖2种典型荒漠林地进行野外实地观测、采样和室内分析。结果表明:①梭梭林地和柽柳林地土壤理化特征除全盐含量随土层深度的增加而持续降低外,其余各理化因子均在浅层(5~20 cm)处呈小范围集聚随后显著降低;②土壤酶活性的变化中,过氧化氢酶和蛋白酶随土层深度的增加呈规律性变化,脲酶在表层(0~5 cm)和较深层(20~40 cm)表现为:柽柳林地>梭梭林地,蔗糖酶活性除表层(0~5 cm)表现为:柽柳林地>梭梭林地外,浅层(5~20 cm)和较深层(20~40 cm)土壤酶活性均表现为:梭梭林地>柽柳林地;③2种荒漠林地3大微生物数量表现为:细菌>真菌>放线菌,且以细菌和放线菌占主导,说明温度较低的3月细菌活性仍较强,依旧是土壤中主要的微生物类群。

关键词: 绩效, 绩效, 因子, 农村, 养老保险

Abstract: As a specific period with soil freeze-thaw action, the snow melting period brings important influences to soil enzyme activity. In order to deeply learn about soil ecological processes of major dominant species in dry desert areas during the snow melting period, outdoor field observation, sampling and indoor analysis were carried out to 2 typical desert forest lands in Ebinur Lake Region in March, 2013. Research results show that ① as for soil physical and chemical characteristics in Haloxylon ammondendron forest lands and Tamarix chinensis forest lands, the total salt content continuously decreased along with the increase of soil layer depth, while all the other physical and chemical factors gathered in a small scope and then decreased obviously in shallow layers (5-20 cm); ② with regard to changes of soil enzyme activity, the activity of catalase and protease varied regularly with increase of soil layer depth, wherein the urease activity in surface layer (0-5 cm) and relatively deep layer (20-40 cm) of Tamarix chinensis forest lands exceeded that of Haloxylon ammondendron forest lands, the activity of sucrose in surface layer (0-5 cm) of Tamarix chinensis forest lands exceeded that of Haloxylon ammondendron forest lands, and the soil enzyme activity in shallow layer (5-20 cm) and relatively deep layer (20-40 cm) of Haloxylon ammondendron forest lands exceeded that of Tamarix chinensis forest lands; ③ the quantity sequence of 3 major microorganisms in 2 types of desert forest lands is bacteria>fungus>actinomycetes, wherein bacteria and actinomycetes played a dominant role, which indicates that bacteria still have strong activity in March with a low temperature and are still the major microorganism type in soil.

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