干旱区生态环境知识资源中心(Arid): 艾比湖地区荒漠草地、胡杨林地土壤甲烷排放日变化规律及其环境影响因子研究

Arid

	艾比湖地区荒漠草地、胡杨林地土壤甲烷排放日变化规律及其环境影响因子研究
其他题名	Research on Soil CH4 Flux of Change Rule and the Relationship between Environmental Impact Factors of Desert Grassland and Euphrates poplar Forest in Ebinur Lake Area
	崔楠; 秦璐; 刘东; 魏雪峰; 冉启阳; 吕光辉
来源期刊	新疆农业科学
ISSN	1001-4330
出版年	2014
卷号	51 期号:1 页码:81-88
中文摘要	[目的]定量分析艾比湖地区荒漠草地和胡杨林地土壤甲烷排放通量的日变化,探讨影响土壤CH_4排放的主要环境因子,为该地区环境因子对荒漠生态系统土壤CH_4排放的影响提供一定的数据支持.[方法]采用静态暗箱法结合Li-7 700快速CH_4分析仪测定荒漠草地和胡杨林地土壤生长季的甲烷排放通量,同步进行气温、风速、大气相对湿度等环境因子的观测.[结果]观测期内荒漠草地的平均通量为2.19mug/(m~2·s),最大值为48.96 mug/(m~2·s),最小值为-38.58 mug/(m~2·s);胡杨林地的平均通量为-0.96mug/(m~2·s),最大值为36.15 mug/(m~2·s),最小值为-16.82 mug/(m~2·s).荒漠草地CH_4排放具有较明显的昼夜变化,呈双峰曲线;胡杨林地则不明显.荒漠草地、胡杨林地土壤CH_4通量排放与不同深度土壤温度之间没有固定的关系.荒漠草地甲烷通量与不同深度土壤温度的相关性高于胡杨林地,且呈极显著相关(P<0.01),而地表温度与甲烷通量相关性不强;大气相对湿度和风速与甲烷通量日变化之间相关均不显著.[结论]观测时间内的甲烷排放通量几乎为负通量,表明土壤以吸收CH_4为主,故荒漠草地和胡杨林地均是甲烷的吸收汇.
英文摘要	[Objective] The aim of research is to conduct quantitative analysis of change on the soil CH_4 flux of desert grassland and Populus euphratica forest in Ebinur Lake area and focus on the main environmental factors which are affecting soil CH_4 emissions,and provide data support to explain the environmental factors in the area of desert ecosystem soil CH_4 emissions. [ Method]Using static black-box method combined with Li-7700 rapid CH_4 analyzer was used to do research into CH_4 emissions of desert grassland and Populus euphratica forest in growth season, and discuss the effects of environmental factors such as the temperature, wind speed, air relative humidity on methane emission.[Result]During the observation period, the average CH_4 flux of the desert grassland was 2. 19 mug/(m~2 ? s)the maximum value was 48. 96 mug/(m~2 ? s) the minimum value was -38. 58 mug/(m~2 ? s) the average CH_4 flux of Populus euphratica forest land was -0. 96 mug/ (m~2 ?s)the maximum value was 36. 15 mug/(m~2 ? s) the minimum value was -16. 82 mug/(m~2 ? s)The CH_4 emission of desert grassland had an obvious diurnal variation,presenting a bimodal curve, while Populus euphratica forest did not have an obvious relationship. There was no definite relationship between the CH_4 emissions of desert grassland and Populus euphratica forest and the temperature of different depths of soil layers. The relationship of the CH_4 emission of desert grassland with the temperature of different depth of soil layer was higher than Populus euphratica forest, and was significantly correlated (P <0. 01), and the correlation of the surface temperature and CH_4 emission flux was not strong ; And also air relative humidity and wind speed with daily variation of methane flux were not significant.[Conclusion]In short, the two soil samples consume the atmospheric methane, so they are CH_4 sink.
中文关键词	荒漠草地 ; 胡杨林地 ; 静态暗箱法 ; 土壤甲烷 ; 环境因子
英文关键词	desert grassland the Euphrates Poplar forests static camera obscure method soil methane environmental factors
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:5082251
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231934
作者单位	新疆大学资源与环境科学学院, 绿洲生态教育部重点实验室, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	崔楠,秦璐,刘东,等. 艾比湖地区荒漠草地、胡杨林地土壤甲烷排放日变化规律及其环境影响因子研究[J]. 新疆大学,2014,51(1):81-88.
APA	崔楠,秦璐,刘东,魏雪峰,冉启阳,&吕光辉.(2014).艾比湖地区荒漠草地、胡杨林地土壤甲烷排放日变化规律及其环境影响因子研究.新疆农业科学,51(1),81-88.
MLA	崔楠,et al."艾比湖地区荒漠草地、胡杨林地土壤甲烷排放日变化规律及其环境影响因子研究".新疆农业科学 51.1(2014):81-88.