干旱区生态环境知识资源中心(Arid): 艾比湖湿地季节性冻融土壤温室气体排放规律研究

Arid

	艾比湖湿地季节性冻融土壤温室气体排放规律研究
其他题名	Greenhouse gas emission from seasonal frozen-thawed soil in Ebinur Lake wetland
	朱文煜; 李艳红; 李发东; 王金龙
来源期刊	北京师范大学学报. 自然科学版
ISSN	0476-0301
出版年	2020
卷号	56 期号:4
中文摘要	利用静态箱-气象色谱法对2015年11月2016年3月艾比湖湿地季节性冻融期土壤温室气体进行观测.结果表明:季节性冻融期裸地土壤${m{C} }{{m{O}}_2}$表现为汇、芦苇和柽柳土壤${m{C}}{{m{O}}_2}$表现为源;芦苇、柽柳和裸地土壤${m{C}} {{m{H}}_4}$表现为汇,而${{m{N}}_2}{m{O}}$表现为源;芦苇、柽柳和裸地土壤温室气体最低值均出现在冻结期(1 1月次年2月)且为负通量;不同植被类型下土壤${m{C}}{{m{O}}_2}$在融化期(3月末)出现排放峰值,而土壤${m{C}} {{m{H}}_4}$和${{m{N}}_2}{m{O}}$在冻融交替期(3月初)出现排放峰值;在整个观测期,芦苇和柽柳土壤${ m{C}}{{m{O}}_2}$、${m{C}}{{m{H}}_4}$和${{m{N}}_2}{m{O}}$排放峰值高于裸地 ;温度对季节性冻融期土壤${m{C}}{{m{O}}_2}$和${{m{N}}_2}{m{O}}$影响显著,均达到显著正相关($ P < 0.05$),土壤温度能解释芦苇、柽柳和裸地土壤${m{C}}{{m{O}}_2}$通量的77%~88%;土壤质量含水量对土壤${m {C}}{{m{H}}_4}$和${{m{N}}_2}{m{O}}$影响均达到显著正相关关系($P < 0.05$),土壤质量含水量能解释芦苇、柽柳和裸地${m{C}}{{m{H}}_4}$和${{m{N}}_2}{m{O}}$通量的25%~46%和41%~69%.表明在干旱区季节性冻融期,温度变化对不同植被类型下土壤${m{C}}{{m{O}}_2}$影响较大,而在冻融交替期水分变化对${m{C}}{{m{H}}_4}$和${{m{N}}_2}{m{O}}$通量影响显著.芦苇、柽柳和裸地土壤呼吸${Q_{10}}$值分别为2.37,2.58和2.33,不同植被类型基于100 a尺度,土壤温室气体全球增温潜势由大到小依次为芦苇($569.67;{m{kg}} cdot {m{h}}{{m{m}}^{ - 2}}$)、柽柳($152.09;{m{kg}} cdot {m{h}}{{m{m}}^{ - 2}}$)、裸地($ - 861.50;{m{kg}} cdot {m{h}}{{m{m}}^{ - 2}}$).
英文摘要	Static box-meteorological chromatography was used to examine soil greenhouse gas emission in seasonal freezing-thawing period of Ebinur Lake wetland arid areas from November 2015 to March 2016. ${m{C}}{{m{O}}_2}$ of bare soil was found to be the sink,${m{C}}{{m{O}}_2}$ of reed and tamarisk the source,${m{C}}{{m{H}}_4}$ of reed,tamarisk and bare soil the sink,${{m{N}}_2}{m{O}}$ the source. The lowest value of greenhouse gas in reed, tamarisk and bare soil was found to appear in the freezing period (November-February) with a negative flux. Under different vegetation types,soil ${m{C}}{{m{O}}_2}$ emission was found to peak in thawing period (late march), while soil ${m{C}}{{m{H}}_4}$ and ${{m{N}}_2}{m{O}}$ emissions peak in freezing -thawing alternate period (early march). During the observation period, emission peaks of ${m{C}}{{m{O}}_2}$, ${m{C}}{{m{H}}_4}$ and ${{m{N}}_2}{m{O}}$ in soil of reed and tamarisk chinensis were found higher than bare land. Temperature was found to have significant influence on soil ${m{C}}{{m{O}}_2}$ and ${{m{N}}_2}{m{O}}$ in seasonal freezing-thawing period,both with significant positive correlation ($P < 0.05$). Soil temperature explained 77%-88% of the ${m{C}}{{m{O}}_2}$ flux of reed,tamarisk and bare soil. The soil moisture content was found significantly positively correlated with soil ${m{C}}{{m{H}}_4}$ and ${{m{N}}_2}{m{O}}$ ($P < 0.05$). Soil moisture content explained 25%-46% and 41%-69% of ${m{C}}{{m{H}}_4}$ and ${{m{N}}_2}{m{O}}$ fluxes of reed, tamarisk and bare land. Temperature change was found to have a great impact on soil ${m{C}}{{m{O}}_2}$ in different vegetation types, while water change in freezing -thawing alternate period was found to have a significant impact on ${m{C}}{{m{H}}_4}$ and ${{m{N}}_2}{m{O}}$ flux in the seasonal freezing-thawing period in arid areas. Respiratory $Q10$ values of reed, tamarisk and bare soil were found to be 2.37, 2.58 and 2.33, respectively. Global warming potential of different vegetation types based on 100-year scale of soil greenhouse gas was found to be: reed $left( {569.67;{m{kg}} cdot {m{h}}{{m{m}}^{ - 2}}} ight) > {m{tamarisk}}left( {152.09;{m{kg}} cdot {m{h}}{{m{m}}^{ - 2}}} ight) > {m{bare;land}}left( { - 861.50;{m{kg}} cdot {m{h}}{{m{m}}^{ - 2}}} ight)$.
中文关键词	艾比湖湿地 ; 季节性冻融 ; 温室气体 ; 不同植被类型 ; 温度敏感性系数
英文关键词	GWP Ebinur Lake wetland seasonal freezing and thawing greenhouse gases different vegetation types ${Q_{10}}$ GWP
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6829092
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353324
作者单位	朱文煜, 新疆师范大学地理科学与旅游学院;;新疆维吾尔自治区重点实验室新疆干旱区湖泊环境与资源实验室, ;;新疆维吾尔自治区重点实验室新疆干旱区湖泊环境与资源实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830054;;830054, 中国. 李艳红, 新疆师范大学地理科学与旅游学院;;新疆维吾尔自治区重点实验室新疆干旱区湖泊环境与资源实验室, ;;新疆维吾尔自治区重点实验室新疆干旱区湖泊环境与资源实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830054;;830054, 中国. 王金龙, 新疆师范大学地理科学与旅游学院;;新疆维吾尔自治区重点实验室新疆干旱区湖泊环境与资源实验室, ;;新疆维吾尔自治区重点实验室新疆干旱区湖泊环境与资源实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830054;;830054, 中国. 李发东, 新疆师范大学地理科学与旅游学院;;新疆维吾尔自治区重点实验室新疆干旱区湖泊环境与资源实验室;;中国科学院地理科学与资源研究所;;中国科学院大学资源与环境学院, ;;新疆维吾尔自治区重点实验室新疆干旱区湖泊环境与资源实验室;;;;, 乌鲁木齐;;乌鲁木齐;;;;, 新疆;;新疆;;北京;;北京 830054;;830054;;100101;;100190, 中国.
推荐引用方式 GB/T 7714	朱文煜,李艳红,李发东,等. 艾比湖湿地季节性冻融土壤温室气体排放规律研究[J],2020,56(4).
APA	朱文煜,李艳红,李发东,&王金龙.(2020).艾比湖湿地季节性冻融土壤温室气体排放规律研究.北京师范大学学报. 自然科学版,56(4).
MLA	朱文煜,et al."艾比湖湿地季节性冻融土壤温室气体排放规律研究".北京师范大学学报. 自然科学版 56.4(2020).