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Temporal Variation of Ecosystem Scale Methane Emission From a Boreal Fen in Relation to Temperature, Water Table Position, and Carbon Dioxide Fluxes

机译：与温度，水位位置和二氧化碳通量相关的博耳芬生态系统甲烷排放的时间变化

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Abstract > We have analyzed decade‐long methane flux data set from a boreal fen, Siikaneva, together with data on environmental parameters and carbon dioxide exchange. The methane flux showed seasonal cycle but no systematic diel cycle. The highest fluxes were observed in July–August with average value of 73?nmol?m ?2 ?s ?1 . Wintertime fluxes were small but positive, with January–March average of 6.7?nmol?m ?2 ?s ?1 . Daily average methane emission correlated best with peat temperatures at 20–35?cm depths. The second highest correlation was with gross primary production (GPP). The best correspondence between emission algorithm and measured fluxes was found for a variable‐slope generalized linear model ( r 2 ?=?0.89) with peat temperature at 35?cm depth and GPP as explanatory variables, slopes varying between years. The homogeneity of slope approach indicated that seasonal variation explained 79% of the sum of squares variation of daily average methane emission, the interannual variation in explanatory factors 7.0%, functional change 5.3%, and random variation 9.1%. Significant correlation between interannual variability of growing season methane emission and that of GPP indicates that on interannual time scales GPP controls methane emission variability, crucially for development of process‐based methane emission models. Annual methane emission ranged from 6.0 to 14?gC?m ?2 and was 2.7?±?0.4% of annual GPP. Over 10‐year period methane emission was 18% of net ecosystem exchange as carbon. The weak relation of methane emission to water table position indicates that space‐to‐time analogy, used to extrapolate spatial chamber data in time, may not be applicable in seasonal time scales. </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <Title Type =“main”>抽象</ title> >我们分析了从Boreal Fen，Siikaneva一起设置的十年长的甲烷助焊剂数据关于环境参数和二氧化碳交换的数据。甲烷通量显示出季节性循环，但没有系统的二环循环。 7月至8月观察到最高助焊剂，平均值为73Ω·纳米？M ？2 </ sup>Δs？1 </ sup>。冬季助焊剂很小但积极，1月3月平均为6.7？Nmol？M ？2 </ sup>？s ？1 </ sup>。每日平均甲烷排放最佳，泥炭温度在20-35℃深度。第二个最高的相关性与初级生产总产（GPP）。发现发射算法与测量助熔剂之间的最佳对应性，用于可变斜面广义的线性模型（ R </ i> 2 </ sup>Δ= 0.89），泥炭温度在35℃深度和GPP作为解释性变量，斜坡之间变化几年。斜坡方法的均匀性表明，季节性变化解释了每日平均甲烷排放量的平方和平均变化之和的79％，持续变化的解释因素7.0％，功能变化5.3％，随机变异9.1％。生长季节甲烷排放的续变性与GPP的续变性之间的显着相关性表明，在持续时间尺度GPP对甲烷排放变异性进行控制，对于基于过程的甲烷发射模型的开发至关重要。每年甲烷排放量为6.0至14？gc？m ？2 </ sup>，并为2.7？±0.4％的年度GPP。超过10年的甲烷排放量为净生态系统交换的18％作为碳。甲烷排放到水位位置的弱关系表明，用于推断空间室数据的时间类比，可能不适用于季节性时间尺度。 </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-23728/'>《Global Biogeochemical Cycles》</a> <b style="margin: 0 2px;">|</b><span>2018年第7期</span><b style="margin: 0 2px;">|</b><span>共20页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Rinne Janne&option=202" target="_blank" rel="nofollow">Rinne Janne;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Tuittila Eeva‐Stiina&option=202" target="_blank" rel="nofollow">Tuittila Eeva‐Stiina;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Peltola Olli&option=202" target="_blank" rel="nofollow">Peltola Olli;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Li Xuefei&option=202" target="_blank" rel="nofollow">Li Xuefei;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Raivonen Maarit&option=202" target="_blank" rel="nofollow">Raivonen Maarit;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Alekseychik Pavel&option=202" target="_blank" rel="nofollow">Alekseychik Pavel;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Haapanala Sami&option=202" target="_blank" rel="nofollow">Haapanala Sami;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Pihlatie Mari&option=202" target="_blank" rel="nofollow">Pihlatie Mari;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Aurela Mika&option=202" target="_blank" rel="nofollow">Aurela Mika;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mammarella Ivan&option=202" target="_blank" rel="nofollow">Mammarella Ivan;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Vesala Timo&option=202" target="_blank" rel="nofollow">Vesala Timo;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Department of Physical Geography and Ecosystem ScienceLund UniversityLund Sweden;</p> <p>School of Forest SciencesUniversity of Eastern FinlandJoensuu Finland;</p> <p>Institute for Atmospheric and Earth System Research/Physics Faculty of ScienceUniversity of HelsinkiHelsinki Finland;</p> <p>Institute for Atmospheric and Earth System Research/Physics Faculty of ScienceUniversity of HelsinkiHelsinki Finland;</p> <p>Institute for Atmospheric and Earth System Research/Physics Faculty of ScienceUniversity of HelsinkiHelsinki Finland;</p> <p>Institute for Atmospheric and Earth System Research/Physics Faculty of ScienceUniversity of HelsinkiHelsinki Finland;</p> <p>Institute for Atmospheric and Earth System Research/Physics Faculty of ScienceUniversity of HelsinkiHelsinki Finland;</p> <p>Institute for Atmospheric and Earth System Research/Physics Faculty of ScienceUniversity of HelsinkiHelsinki Finland;</p> <p>Finnish Meteorological InstituteHelsinki Finland;</p> <p>Institute for Atmospheric and Earth System Research/Physics Faculty of ScienceUniversity of HelsinkiHelsinki Finland;</p> <p>Institute for Atmospheric and Earth System Research/Physics Faculty of ScienceUniversity of HelsinkiHelsinki Finland;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/165.html" title="地质学">地质学;</a><a href="https://www.zhangqiaokeyan.com/clc/5109.html" title="生物地球化学、气体地球化学">生物地球化学、气体地球化学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=peatland&option=203" rel="nofollow">peatland;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=greenhouse gas&option=203" rel="nofollow">greenhouse gas;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=flux&option=203" rel="nofollow">flux;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=methane&option=203" rel="nofollow">methane;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=carbon dioxide&option=203" rel="nofollow">carbon dioxide;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=wetland&option=203" rel="nofollow">wetland;</a> </p> <div class="translation"> 机译：泥炭地;温室气体;助焊剂;甲烷;二氧化碳;湿地; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704023423769.html">Temporal Variation of Ecosystem Scale Methane Emission From a Boreal Fen in Relation to Temperature, Water Table Position, and Carbon Dioxide Fluxes</a> 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