干旱区生态环境知识资源中心(Arid): 西安南效和陕北长武土壤CO

Arid

	西安南效和陕北长武土壤CO_2释放量研究
其他题名	A study on relese flux of CO-2 in southern suburb of Xi’an and Changwu of northern Shaanxi
	贺辉 1; 赵景波 2; 杜娟 1; 郝玉芬 1; 刘晓琼 1; 童心刚 1
来源期刊	中国岩溶
ISSN	1001-4810
出版年	2002
卷号	21 期号:4 页码:258-262
中文摘要	本文根据NaOH溶液吸收CO_2的方法，对西安南郊和陕北长武地区土壤CO_2释放量进行了昼夜观测。观测结果表明，不同地区土壤CO_2释放量存在差异，气候偏冷偏干地区土壤CO_2释放量较小，气候偏热偏湿地区土壤CO_2释放量较大。陕北长武土壤CO_2释放量变化再次证明，从当日早晨至次日早晨，CO_2释放量具有由低变高再变低的规律；CO_2释放量相对于大气温度的日变化具有滞后性，滞后时间为4～6小时；土壤CO_2释放量白天较少，夜间较多；CO_2释放量变化显示，在土层深厚的地区，土壤微生物夜间活动强度总体应比白天大。
英文摘要	By means of CO_2 absorption by NaOH solution, the released flux of CO_2 was observed round the clock in southern suburb of Xi’an and Changwu. Results observed show that there is difference of released flux of CO_2 in different areas, that released flux is lower in cool and arid area than in warm and moist area. Change of released flux of CO_2 proves again that the released flux changes from low to high and then to low from this morning to the next. The change of CO_2 released flux from soil is about 4-6 hours later than that of air temperature. The CO_2 released flux is less in day than at night, that indicates the activity of microorganisms is stronger at night in thick loess area.
中文关键词	黄土地区 ; 土壤CO_2 ; 释放量 ; 变化规律
英文关键词	keyworkds loess area CO_2 in soils released flux Change law of released flux
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:1160348
来源机构	陕西师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203712
作者单位	1.陕西师范大学地理系, 西安, 陕西 710062, 中国; 2.陕西师范大学, 黄土与第四纪地质国家重点实验室, 西安, 陕西 710075, 中国
推荐引用方式 GB/T 7714	贺辉,赵景波,杜娟,等. 西安南效和陕北长武土壤CO_2释放量研究[J]. 陕西师范大学,2002,21(4):258-262.
APA	贺辉,赵景波,杜娟,郝玉芬,刘晓琼,&童心刚.(2002).西安南效和陕北长武土壤CO_2释放量研究.中国岩溶,21(4),258-262.
MLA	贺辉,et al."西安南效和陕北长武土壤CO_2释放量研究".中国岩溶 21.4(2002):258-262.