干旱区生态环境知识资源中心(Arid): 两种典型荒漠植被区土壤微生物量碳的季节变化及影响因素分析

Arid

	两种典型荒漠植被区土壤微生物量碳的季节变化及影响因素分析
其他题名	Seasonal patterns of soil microbial biomass C and impacting factors in two typical arid desert vegetation regions
	管海英; 王权; 赵鑫; 靳佳; 张思楠
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2015
卷号	38 期号:1 页码:67-75
中文摘要	选取干旱区准噶尔盆地南缘梭梭和柽柳两类典型荒漠植被区的4种不同地表类型(冠层下、枯枝落叶层、地衣结皮覆盖区、裸地),对其从6~ 10月份的土壤微生物量碳季节变化进行动态监测,并在此基础上进行了土壤微生物量碳与各影响因子之间关系的分析,旨在揭示干旱区土壤微生物量碳季节动态变化特征及其主要影响因子。结果表明:两类典型荒漠植被区的土壤微生物量碳均呈现明显的季节变化,但变化趋势并不一致。其中梭梭植被区4种地表类型下的土壤微生物量碳均在8月达到峰值;柽柳植被区冠层下土壤微生物量碳也在8月份达到最大值,但其他3种地表类型下的土壤微生物量碳却在8月降到最低值。通过土壤微生物量碳的影响因子分析表明两类不同植被区土壤微生物量碳与有机碳、全氮均为(P<0.05)正相关,此外,梭梭植被区与土壤湿度存在正相关,而柽柳植被区则与土壤总含盐量呈显著负相关,表明两类荒漠植被区土壤微生物对影响因子的响应并不完全相同。
英文摘要	Soil microbial biomass (SMB) C and its seasonal variation have great impact on arid land carbon cycle. Although close correlation of seasonal variation of soil microbial biomass C and carbon cycle were revealed in diverse studies, the relationship in arid land have not been sufficiently studied yet, primarily due to the data poverty of long-term dynamics of soil microbial biomass C. The paper selected four different types of land surfaces, below canopy, litter, lichens, and bare soil, in two typical desert vegetation regions (Haloxylon ammodendron and Tamarix chinensis) in the southern edge of Junggar Basin in western China for revealing seasonal dynamics of soil microbial biomass C in arid lands. Seasonal variations of soil microbial biomass C and surrounding environmental factors under each land surface were monitored from June to October in 2013 for investigating their relationships. The results clearly indicated that the soil microbial biomass C in desert vegetation regions had significant seasonal fluctuations regardless of surface types. Soil microbial biomass C reached the peak point in August in Haloxylon ammodendron plot for all surface types. However, only below canopy in Tamarix chinensis plot peaked at the same time while had the lowest SMB in August for the other three land surface types. Soil microbial biomass C of both typical desert vegetation regions were significantly (P<0.05) related with soil organic matter and total nitrogen through the analysis of soil microbial mass and its impact factors. Furthermore,specific significant impact factors were also identified for different vegetation regions. SMB had a significant positive correlation with soil moisture in the Haloxylon ammodendron plot hut a significant negative correlation with total salt in the Tamarix chinensis plot. Different impact factors resulted in big differences of SMB under the two vegetation cover regions. The results of the study would provide guidance to the research on the responses of SMB to the future climate under different types of vegetation cover regions and different surface types in arid land.
中文关键词	荒漠生态系统 ; 梭梭 ; 柽柳 ; 微生物量 ; 季节动态
英文关键词	desert ecosystems Haloxylon ammodendron Tamarix chinensis soil microbial biomass (SMB) seasonal variation
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:5349254
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232641
作者单位	中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 8830011, 中国
推荐引用方式 GB/T 7714	管海英,王权,赵鑫,等. 两种典型荒漠植被区土壤微生物量碳的季节变化及影响因素分析[J]. 中国科学院新疆生态与地理研究所,2015,38(1):67-75.
APA	管海英,王权,赵鑫,靳佳,&张思楠.(2015).两种典型荒漠植被区土壤微生物量碳的季节变化及影响因素分析.干旱区地理,38(1),67-75.
MLA	管海英,et al."两种典型荒漠植被区土壤微生物量碳的季节变化及影响因素分析".干旱区地理 38.1(2015):67-75.