干旱区生态环境知识资源中心(Arid): 阿拉善荒漠功能灌木群的土壤呼吸动态研究

Arid

	阿拉善荒漠功能灌木群的土壤呼吸动态研究
其他题名	Soil respiration activity of desert shrubs in Alashan desert
	张冬梅 1; 王美莲 2; 张鸿翎 2; 高润宏 2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2013
卷号	27 期号:6 页码:116-122
中文摘要	使用LI-8100仪器实测了在生长季阿拉善的梭梭、沙冬青、红砂、华北驼绒藜、珍珠、白刺六种植物群落土壤呼吸速率,使用挖刨面法逐月测定了土壤温度和土壤含水量。结果表明:这六种荒漠植物群落土壤呼吸速率日动态均呈单峰型,最高值皆出现在12:00-14:00,最低值出现在早晨8:00,土壤呼吸速率最大值出现时间先于气温最高值出现的时间。六种植物群落土壤呼吸速率的月变化呈单峰曲线,与近地面气温的变化趋势一致。六种植物群落土壤呼吸速率的日变化与地表温度达到极显著正相关关系,与近地面气温、5cm、10cm温度具有显著相关性。六种植物群落与土壤含水量0-10cm、10-20cm、20-30cm都没有显著相关性。在源与汇的问题上,梭梭、沙冬青、红砂、珍珠、华北驼绒藜、白刺是汇。
英文摘要	The soil respiration rate during the plant growing period (from May to October in 2011) and major environmental factor were determined by means of a Li - 8100 automated soil CO_2 flux system in the Reaumuria soongorica, Ammopiptanthus mongolicus, Nitraria tangutorum, Ceratoides arborescens, Salsola passerina communities of desert ecosystem in the Alashan desert based on the monthly monitoring data. The results indicate that soil respiration rates of six major desert communities had significant diurnal variation and seasonal dynamics, all of them was shown a singel - peak curve. Soil respiration increased congruously with increasing of soil temperature, but the appearing time of maximum temperature was later than that of maximum respiration rate. Maximum rate of CO_2 emission appeared at 14: 00 and minimum at 8: 00 in the early morning. Correlation analysis showed that soil respiration rate of six major desert communities was significantly correlated with air temperature, soil temperature at the surface, 5cm and 10cm depth. The relationship between soil respiration rate (Y) and air temperature (X) can be described as a simple equation (P < 0. 01). Soil water content was another important factor affecting soil respiration rate, but in this region, the relationship between soil respiration and soil moisture was poor. Correlation analysis showed that soil respiration rate had no distinct relationship. they were influenced by light. In the aspects of source and sink, Reaumuria soongorica; Ammopiptanthus mongolicus; Ceratoides arborescens; Nitraria tangutorum and Salsola passerina are carbon sequestration.
中文关键词	土壤呼吸速率 ; 荒漠植物群落 ; 碳汇
英文关键词	soil respiration rate desert plant community carbon sequestration
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:4837138
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229640
作者单位	1.内蒙古农业大学生态环境学院, 呼和浩特, 内蒙古 010019, 中国; 2.内蒙古农业大学林学院, 呼和浩特, 内蒙古 010019, 中国
推荐引用方式 GB/T 7714	张冬梅,王美莲,张鸿翎,等. 阿拉善荒漠功能灌木群的土壤呼吸动态研究[J]. 内蒙古农业大学,2013,27(6):116-122.
APA	张冬梅,王美莲,张鸿翎,&高润宏.(2013).阿拉善荒漠功能灌木群的土壤呼吸动态研究.干旱区资源与环境,27(6),116-122.
MLA	张冬梅,et al."阿拉善荒漠功能灌木群的土壤呼吸动态研究".干旱区资源与环境 27.6(2013):116-122.