干旱区生态环境知识资源中心(Arid): 准噶尔盆地南缘梭梭群落春季融雪期的土壤呼吸动态

Arid

	准噶尔盆地南缘梭梭群落春季融雪期的土壤呼吸动态
其他题名	Dynamic Change of Soil Respiration in Haloxylon ammodendron Community in Southern Edge of Junggar Basin in Snowmelt Season
	谢继萍 1; 钟文昭 2; 黄刚 1; 李彦1 ; 吴林峰 1
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2013
卷号	30 期号:3 页码:430-437
中文摘要	积雪对温带中高纬度地区早春土壤温度和水分具有调控作用,并对土壤呼吸具有重要影响。利用箱式法观测2012年早春积雪融化阶段古尔班通古特沙漠南缘典型温带荒漠梭梭群落内土壤呼吸的动态变化。结果表明:春季融雪期梭梭群落土壤呼吸变异极大,变化范围为0.2~1.2mumol.m~(-2).s~(-1),日平均土壤呼吸速率变化呈先增后减趋势,但土壤最大呼吸速率随土壤含水量的减少而减少。融雪期灌丛内外土壤呼吸变化规律相同,梭梭灌丛内土壤呼吸速率显著高于灌丛外。融雪期土壤含水量与最大土壤呼吸具有显著的相关关系,但在日尺度上土壤温度与土壤呼吸具有显著的相关关系。研究表明:积雪融化对土壤呼吸具有显著的激发效应,早春积雪变化对土壤呼吸速率将产生重要影响。
英文摘要	Snowmelt affects highly the change of soil moisture content and temperature in topsoil in snow thawing season,and hence affects soil respiration in temperate arid land. In snow thawing season in early spring 2012,a carbon flux chamber was used to observe the dynamic change of soil respiration in Haloxylon ammodendron community in southern marginal zone of the Gurbantonggut Desert. The results showed that the variation of soil respiration rate was significant and ranged from 0. 2 to 1. 2 mumol·m~(-2)·s~(-1). In snow thawing season,the mean soil respiration rate was increased at first and then decreased,and its maximum value was decreased with the decrease of soil moisture content. Soil respiration under bushwood was significantly higher than that out of the bushwood,and its variation under and out of the bushwood was similar. There was a significant correlation between soil moisture content and maximum soil respiration in snow thawing season,and also a significant correlation between soil temperature and soil respiration at daily scale. The study results revealed that there was a stimulating effect of snow thawing on soil respiration,and the change of snow cover in early spring affected significantly soil respiration in the Gurbantonggut Desert.
中文关键词	土壤呼吸 ; 融雪期 ; 梭梭群落 ; 土壤含水量 ; 春季 ; 准噶尔盆地
英文关键词	soil respiration snowmelt season in spring Haloxylon ammodendron community soil moisture content spring Junggar Basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:4829854
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/2XILL650/229578
作者单位	1.中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国; 2.新疆生产建设兵团直属222团, 阜康, 新疆 831500, 中国
推荐引用方式 GB/T 7714	谢继萍,钟文昭,黄刚,等. 准噶尔盆地南缘梭梭群落春季融雪期的土壤呼吸动态[J]. 中国科学院新疆生态与地理研究所,2013,30(3):430-437.
APA	谢继萍,钟文昭,黄刚,李彦,&吴林峰.(2013).准噶尔盆地南缘梭梭群落春季融雪期的土壤呼吸动态.干旱区研究,30(3),430-437.
MLA	谢继萍,et al."准噶尔盆地南缘梭梭群落春季融雪期的土壤呼吸动态".干旱区研究 30.3(2013):430-437.