干旱区生态环境知识资源中心(Arid): 黑河下游五种不同植被类型土壤呼吸的差异性解析

Arid

	黑河下游五种不同植被类型土壤呼吸的差异性解析
其他题名	Analytic differences on soil respiration of various vegetation types in the lower reaches of Heihe River Basin
	任志国 1; 马明国 2; 宋怡 3
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2017
卷号	40 期号:3 页码:598-605
中文摘要	土壤呼吸的微小变化会对大气CO_2浓度产生重大影响,尤其在极端干旱区。通过对黑河下游额济纳旗四道桥的混合林、胡杨、柽柳、农田及裸地的土壤呼吸进行研究,结果表明:2014年夏季5种不同植被类型的土壤呼吸速率大小排序:胡杨柽柳混合林 > 柽柳 > 农田 > 胡杨 > 裸地,各类型的5 cm处土壤温度和湿度无明显变化规律,土壤温度在22 ~ 35 ℃,土壤湿度集中在13% ~ 61%的变化范围。探究了5种不同植被类型的土壤呼吸速率与土壤温度、土壤湿度、地表温度、空气温度及空气湿度的线性相关关系,发现它们的土壤呼吸速率与土壤温度、土壤湿度、空气温度、空气湿度之间无显著相关(P>0.05),表明水热因子对土壤呼吸的影响具有很大的不确定性。
英文摘要	Slight changes in soil respiration can have significant impacts on atmospheric C02 concentrations,especially in extreme arid regions. In this paper, the soil respiration of different vegetation cover types, including forest (Populus euphratica),shrub (Tamarix chinensis),mixed forest (Populus euphratica mixed with Tamarix chinensis),farmland and bare soil were measured at Sidaoqiao, Ejin County, Inner Mongolia, China in lower reaches of Heihe River during the summer of 2014. Results indicated that soil respiration rate for the five different vegetation types were descending ordered: Mixed forest>T. chinensis>Farmland>P. euphratica > Bare land. The soil temperature and soil moisture at 5 cm changed insignificantly. soil moisture ranging from 13% to 61% with soil temperature varying from 22 to 35 ℃ (there was a rain during the experiment period). The linear relationships between soil respiration and environmental factors including soil temperature, soil moisture, surface temperature,air temperature and air humidity of five different types vegetation were explored. It was found that there was no significant correlation (P>0.05) between the four environmental factors. Besides, the effects of hydrothermal factors on soil respiration were with high uncertainty. The results could provide scientific support and basic data for the study of the changes of soil respiration and carbon cycle in desert riparian forest. In the future, we need to deeply analyze the impact mechanism of hydrothermal factors on soil respiration in the extreme arid area.
中文关键词	黑河下游 ; 植被类型 ; 土壤呼吸
英文关键词	the lower reaches of Heihe River the vegetation type soil respiration
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:6016341
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235937
作者单位	1.中国科学院西北生态环境资源研究院黑河遥感试验研究站, 甘肃省遥感重点实验室, 兰州, 甘肃 730000, 中国; 2.西南大学地理科学学院, 重庆 400715, 中国; 3.中国科学院地球环境研究所, 西安, 陕西 710061, 中国
推荐引用方式 GB/T 7714	任志国,马明国,宋怡. 黑河下游五种不同植被类型土壤呼吸的差异性解析[J],2017,40(3):598-605.
APA	任志国,马明国,&宋怡.(2017).黑河下游五种不同植被类型土壤呼吸的差异性解析.干旱区地理,40(3),598-605.
MLA	任志国,et al."黑河下游五种不同植被类型土壤呼吸的差异性解析".干旱区地理 40.3(2017):598-605.