干旱区生态环境知识资源中心(Arid): 荒漠-湿地景观下艾比湖地区冬春时段CO

Arid

	荒漠-湿地景观下艾比湖地区冬春时段CO_2通量特征研究
其他题名	Analysis on CO_2 Flux during Winter and Spring in Ebinur Lake Area Based on Desert-wetland Landscape
	刘东; 吕光辉; 何学敏; 高丽娟; 苏前
来源期刊	新疆农业科学
ISSN	1001-4330
出版年	2014
卷号	51 期号:4 页码:714-722
中文摘要	【目的】研究干旱区内荒漠-湿地生态系统CO_2通量的变化特征,区域CO_2通量的研究提供支持。【方法】利用涡度相关系统对艾比湖地区荒漠-湿地生态系统进行观测,分析冬末-春季(3月21日~5月20日)CO_2通量的动态变化特征。【结果】这一时期艾比湖地区荒漠-湿地生态系统CO_2通量的变化范围为-1.03 ~1.04 mg/(m~2·s);冬末、初春表现为碳释放,春季为碳吸收;最大吸收值出现在5月19日的11:30,为-1.03 mg/(m~2·s),最大释放值出现在5月15日的23:00,为1. 04 mg/(m~2·s);白天碳吸收量随着温度的升高而增加,夜晚在15℃时CO_2释放量达到最大值。【结论】在整个时间段,初春、春季白天表现为碳吸收,夜晚为碳释放;白天NEE值表现为冬末> 初春> 春季,夜晚NEE值表现为冬末< 初春< 春季;冬末除正午左右生态系统表现为碳吸收,其余时间均表现为碳释放;总体表现为碳释放,释放总量为3.68 mg/m~2。
英文摘要	【Objective】To research arid desert area-wetland ecosystem CO_2 flux variations, the purpose is to provide support for the research of CO_2 flux in this area.【Method】The CO_2 flux in the Ebinar Lake area from March 21, 2012 to May 20, 2012 was measured by eddy convariance technology. 【Result] The results showed that the CO_2 flux changed in the range of-1.03 ~ 1.04 mg/(m~2·s) in the Ebinur Lake area desert-wetland ecosystem during this period ; At the end of winter and early spring the carbon was released, and carbon sequestration was found in spring time; Maximum absorption values appeared in the 11:30 of May 19, maximum release values appeared in the 23 :00 of May 15. Daytime carbon uptake increased with increasing temperature,but druing the night at 15℃ carbon dioxide emissions reached the maximum.【Conclusion】During the whole period, carbon was absorbed during the daytime in spring, but at night time carbon was released; Daytime NEE values were as follows: late winter > early spring > spring ; night time NEE values showed : late winter < early spring < spring ; At the end of winter the ecosystem showed carbon was absorbed only around the midday, and at other times carbon was released. The overall performance of the ecosystem was carbon release. The total amount released was 3. 68mg/m~2.
中文关键词	艾比湖 ; 荒漠-湿地生态系统 ; 二氧化碳通量 ; 涡度相关法
英文关键词	Ebinur Lake area desert-wetland ecosystem CO_2 flux Eddy covariance method
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:5158944
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/2XILL650/231940
作者单位	新疆大学资源与环境科学学院, 新疆绿洲生态重点实验室, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	刘东,吕光辉,何学敏,等. 荒漠-湿地景观下艾比湖地区冬春时段CO_2通量特征研究[J]. 新疆大学,2014,51(4):714-722.
APA	刘东,吕光辉,何学敏,高丽娟,&苏前.(2014).荒漠-湿地景观下艾比湖地区冬春时段CO_2通量特征研究.新疆农业科学,51(4),714-722.
MLA	刘东,et al."荒漠-湿地景观下艾比湖地区冬春时段CO_2通量特征研究".新疆农业科学 51.4(2014):714-722.