干旱区生态环境知识资源中心(Arid): 艾比湖地区冻融作用对梭梭群落土壤酶活性?及微生物数量的影响

Arid

	艾比湖地区冻融作用对梭梭群落土壤酶活性?及微生物数量的影响
其他题名	Soil enzyme activity and microbial biomass of Haloxylon ammodendron community under freeze-thaw action
	马晓飞 1; 楚新正 2; 马倩 1
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2015
卷号	38 期号:6 页码:1190-1201
中文摘要	冻融作用对酶和微生物活性具有重要影响,进而影响植物群落的生长发育。为深入了解荒漠优势种梭梭群落冬季土壤生态过程,于2012年10月~2013年10月,对土壤冻融期、冻结期、融冻期和生长季的艾比湖典型样地进行野外实地观测、采样和室内分析。通过对比分析不同冻融阶段土壤含水量、pH值、有机质、全氮、酶活性和微生物数量的变化特征。结果表明:(1)土壤含水量,融冻期>冻结期>冻融期>生长季,土壤pH值,生长季>融冻期>冻融期>冻结期,各土层土壤含水量以浅层土表现最为显著(P<0.05),不同冻融阶段各土层pH值差异性较大,冻融期、冻结期和生长季表层土壤pH值较大,融冻期浅层土壤pH值较大。(2)土壤有机质和全氮含量的波动状况相似,分别在融冻期和生长季呈现波峰和波谷,不同土层间全氮和有机质含量差异性较小,以冻融期和生长季表现最为显著(P<0.05)。(3)土壤酶活性的变化中,过氧化氢酶、脲酶和蛋白酶在融冻期含量最大,冻融期次之,蔗糖酶在冻结期活性最大,土壤微生物数量的变化以融冻期最大,除此之外,各冻融阶段细菌和放线菌占主导,真菌含量相对较少。(4)冻融循环次数分布于冻融期和融冻期,对土壤酶活性和微生物数量具有一定的影响,致使融冻期土壤各因子大于冻融期。
英文摘要	Freeze-thaw action has an important influence on enzyme and microbial activity,and further affects the growth and development of phytocoenosium. To gain an insight into the winter soil ecological process of Haloxylon ammodendron community-a dominant species in desert,field observation,sampling and indoor analysis were each carried out on a typical sample plot at Ebinur Lake in soil freeze thawing period,freezing period,thaw freezing period and growing season from October,2012 to October,2013. By comparatively analyze the change features of the soil moisture content,pH value,organic matter,total nitrogen,enzymatic activity and microbial biomass during different freeze thawing stages,this study got results as follows:(1)For soil moisture content,it shows:thaw freezing period >freezing period >freeze thawing period >growing season;and for soil pH value, growing season >thaw freezing period >freeze thawing period >freezing period. As for the soil moisture content in each soil layer,shallow soil was the most significant(P <0.05). The pH values of the soil layers during different freeze thawing stages were quite different,the pH value of the surface soil was larger during freeze thawing period,freezing period and growing season,and the pH value of shallow soil was larger during thaw freezing period.(2)The fluctuations of soil organic matter and total nitrogen content were similar,and the wave crest and wave trough appeared in the freeze thawing period and growing season,respectively. Differences of total nitrogen content and organic matter content among different soil layers are relatively small,and are most significant in the freeze thawing period and growing season(P<0.05);(3)For the changes of soil enzyme activity,the maximum content of catalase,urease and protease occurred in thaw freezing period,followed by freeze thawing period;sucrose was most active during freezing period,and the soil microbial biomass changed to maximum during thaw freezing period. In addition,bacteria and actinomycetes dominated all the freeze thawing stages,and fungus content was relatively small.(4)Cycle-index of freezing and thawing distributed during freeze thawing period and thaw freezing period,which had a certain influence on soil enzyme activity and microbial biomass,leading to a result that the soil factors were larger during thaw freezing period than that during freeze thawing period. This paper discussed and analyzed the changes of soil enzyme activity and microbial biomass of the constructive species- Haloxylon ammodendron community in the Ebinur Lake area during different freeze thawing periods,which is conducive to understanding the response mechanism of various lake wetland soil factors in the inland arid region to freeze-thaw action under the background of climate warming,so as to provide theoretical basis for restoration and improvement of lake basins in arid region.
中文关键词	冻融作用 ; 梭梭 ; 土壤酶活性 ; 微生物数量
英文关键词	freeze-thaw action Haloxylon ammodendron soil enzyme activity microbial quantity
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:5584828
来源机构	新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232686
作者单位	1.新疆师范大学地理科学与旅游学院, 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, 乌鲁木齐, 新疆 830054, 中国; 2.新疆师范大学地理科学与旅游学院, 乌鲁木齐, 新疆 830054, 中国
推荐引用方式 GB/T 7714	马晓飞,楚新正,马倩. 艾比湖地区冻融作用对梭梭群落土壤酶活性?及微生物数量的影响[J]. 新疆师范大学,2015,38(6):1190-1201.
APA	马晓飞,楚新正,&马倩.(2015).艾比湖地区冻融作用对梭梭群落土壤酶活性?及微生物数量的影响.干旱区地理,38(6),1190-1201.
MLA	马晓飞,et al."艾比湖地区冻融作用对梭梭群落土壤酶活性?及微生物数量的影响".干旱区地理 38.6(2015):1190-1201.