干旱区生态环境知识资源中心(Arid): 封育年限对伊犁绢蒿荒漠土壤微生物及酶活性的影响

Arid

	封育年限对伊犁绢蒿荒漠土壤微生物及酶活性的影响
其他题名	Effects of Grazing Exclosure Years on Soil Microorganism and Enzyme Activities in Seriphidium Transiliense Desert
	孙宗玖 1; 李琦 2; 李培英 1; 江沙沙 2
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2018
卷号	38 期号:3 页码:14-18
中文摘要	[目的]揭示封育条件下土壤微生物及其土壤酶活性的适应机制,为退化草地恢复提供科学依据。 [方法]采用蛇形布点法,采集封育0,3及11a伊犁绢蒿荒漠05,510,1020cm土壤样品;采用常规方法对土壤有机质、过氧化氢酶活性、脲酶活性及土壤微生物数量进行测定。[结果]随封育年限增加,0 5cm土层有机质含量呈增加趋势,且封育11a较对照显著提高14.2%。土壤微生物组成中细菌数量最多,占绝对优势,放线菌次之,真菌最少。05cm土层细菌、真菌数量随封育年限增加呈降低趋势,放线菌数量呈增加趋势,至封育11a细菌、真菌较对照依次显著降低(47.3%,25.5%),而放线菌则显著增加(15.5%);520cm土层细菌数量变化不显著,而放线菌及真菌数量多呈增加趋势。封育对伊犁绢蒿荒漠020cm土层过氧化氢酶活性影响不显著,而010cm土层脲酶活性随封育年限增加呈增加趋势,10 20cm土层则呈降低趋势。[结论]长期封育有利于土壤有机质的积累,促进表层土壤放线菌数量及脲酶活性的增加。
英文摘要	[Objective]To explore the adaptive mechanisms of soil microorganism and soil enzyme activity under grazing exclosure conditions in order to provide scientific basis for the recovery of degraded pasture. [Methods]Soil samples were collected from different soil layers(05cm,510cm and 1020cm)in Seriphidium transiliense desert under different exclosure years(0a,3aand 11a)by zigzag sampling method. Then,the soil organic matter,catalase and urease activities,and the amount of soil microorganisms were measured by the conventional methods.[Results]The organic matter content in 010cm soil layer increased with the increasing exclosure years,and the soil organic matter content of 11-year enclosure was 14.2%higher than that of the control.In the composition of microorganism,the largest amount was bacteria, followed by actinomycetes,and fungi was the least.The amount of bacteria and actinomycetes in 05cm soil layer decreased and the amount of fungi increased with the increase of exclosure years,and compared with the control,the amount of bacteria and fungi of 11-year exclosure were decreased by 47.3% and 25.5%,respectively,while the amount of actinomycetes increased by 15.5%(p<0.05).There was no significant difference in the amount of bacteria in the 520cm soil layer among different exclosure years,but the amount of fungi and actinomycetes increased with the increase of exclosure years.There was no significant difference on catalase activity in 020cm soil layer among different exclosure years in S.transiliense desert.The urease activity in 010cm soil layer increased with the increase of enclosure years,and that was decreased in 1020cm soil layer.[Conclusion]The long time enclosure is beneficial to the accumulation of soil organic matter,and can improve the amount of actinomycetes and urease activity in the topsoil.
中文关键词	伊犁绢蒿荒漠 ; 土壤有机质 ; 土壤微生物 ; 酶活性 ; 封育
英文关键词	Seriphidium transiliense desert soil organic carbon soil microorganism enzymatic activity grazing exclosure
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:6283454
来源机构	新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238276
作者单位	1.新疆农业大学草业与环境科学学院;;新疆草地资源与生态重点实验室, ;;新疆草地资源与生态重点实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830052;;830052, 中国; 2.新疆农业大学草业与环境科学学院, 乌鲁木齐, 新疆 830052, 中国
推荐引用方式 GB/T 7714	孙宗玖,李琦,李培英,等. 封育年限对伊犁绢蒿荒漠土壤微生物及酶活性的影响[J]. 新疆农业大学,2018,38(3):14-18.
APA	孙宗玖,李琦,李培英,&江沙沙.(2018).封育年限对伊犁绢蒿荒漠土壤微生物及酶活性的影响.水土保持通报,38(3),14-18.
MLA	孙宗玖,et al."封育年限对伊犁绢蒿荒漠土壤微生物及酶活性的影响".水土保持通报 38.3(2018):14-18.