干旱区生态环境知识资源中心(Arid): 覆膜对绿洲棉田土壤CO_2通量和CO

Arid

	覆膜对绿洲棉田土壤CO_2通量和CO_2浓度的影响
其他题名	Effects of plastic film mulching on soil CO_2 efflux and CO_2 concentration in an oasis cotton field
	俞永祥 1; 赵成义1 ; 贾宏涛 2; 于波 1; 周天河 1; 杨与广 1; 赵华 3
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2015
卷号	26 期号:1 页码:155-160
中文摘要	基于静态箱法和气井法分别测定新疆棉田覆膜位置的土壤CO_2通量和CO_2浓度.结果表明:土壤CO_2通量和CO_2浓度时间变化特征与土壤温度变化趋势一致,均表现为7月较高,10月最低.观测期内,棉田土壤CO_2累积排放量非覆膜处理为2032.81 kg C?hm~(-2),覆膜处理为1871.95 kg C?hm~(-2);而1 m深度内土壤CO_2浓度非覆膜处理为2165~23986muL?L~(-1),覆膜处理为5137~25945muL?L~(-1),即覆膜减少了棉田土壤排放CO_2的同时增加了土壤CO_2积累量.覆膜和非覆膜处理下不同深度土壤CO_2浓度和CO_2通量的相关系数分别为0.60~0.73和0.57~0.75,表明地表释放的CO_2强烈依赖于土壤剖面储存的CO_2.覆膜和非覆膜处理下Q_(10)值分别为2.77和2.48,表明覆膜处理下的土壤CO_2通量对土壤温度变化的响应更敏感.
英文摘要	A field study was conducted to compare soil CO_2 efflux and CO_2 concentration between mulched and non-mulched cotton fields by using closed chamber method and diffusion chamber technique. Soil CO_2 efflux and CO_2 concentration exhibited a similar seasonal pattern,decreasing from July to October. Mulched field had a lower soil CO_2 efflux but a higher CO_2 concentration, compared to those of non-mulched fields. Over the measurement period,cumulative CO_2 efflux was 1871. 95 kg C?hm~(-2) for mulched field and 2032. 81 kg C?hm~(-2) for non-mulched field. Soil CO_2 concentration was higher in mulched field (ranging from 5137 to 25945 muL?L~(-1)) than in nonmulched field (ranging from 2165 to 23986 muL?L~(-1)). The correlation coefficients between soil CO_2 concentrations at different depths and soil CO_2 effluxes were 0. 60 to 0. 73 and 0. 57 to 0. 75 for the mulched and non-mulched fields,indicating that soil CO_2 concentration played a crucial role in soil CO_2 emission. The Q_(10) values were 2. 77 and 2. 48 for the mulched and non-mulched fields, respectively,suggesting that CO_2 efflux in mulched field was more sensitive to the temperature.
中文关键词	土壤CO_2通量 ; 土壤CO_2浓度 ; 干旱区 ; 棉田 ; 覆膜
英文关键词	soil CO_2 efflux soil CO_2 concentration arid region cotton field plastic film mul-ching
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:5336012
来源机构	中国科学院新疆生态与地理研究所 ; 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/2XILL650/233567
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.新疆农业大学, 乌鲁木齐, 新疆 830052, 中国; 3.新疆昌吉水文水资源勘测局, 昌吉, 新疆 831100, 中国
推荐引用方式 GB/T 7714	俞永祥,赵成义,贾宏涛,等. 覆膜对绿洲棉田土壤CO_2通量和CO_2浓度的影响[J]. 中国科学院新疆生态与地理研究所, 新疆农业大学,2015,26(1):155-160.
APA	俞永祥.,赵成义.,贾宏涛.,于波.,周天河.,...&赵华.(2015).覆膜对绿洲棉田土壤CO_2通量和CO_2浓度的影响.应用生态学报,26(1),155-160.
MLA	俞永祥,et al."覆膜对绿洲棉田土壤CO_2通量和CO_2浓度的影响".应用生态学报 26.1(2015):155-160.