Analysis of uncertainty for N <sub xmlns='http://www.wiley.com/namespaces/wiley'>2</sub>2 O fluxes measured with the closed‐chamber method under field conditions: Calculation method, detection limit, and spatial variability.

Lammirato Carlo; Lebender Ulrike; Tierling Jens; Lammel Joachim

摘要

Abstract > The search for agricultural practices that mitigate N <sub>2</sub> O emissions, and the validation and development of models, would benefit if the uncertainty of emission estimates would be reduced relative to current levels. This uncertainty has different sources, such as the error of the flux measurements, the error caused by spatially scaling up measurements to the field or regional level, and the error caused by estimating emissions for the time intervals between measurements by interpolation. This paper focuses on the uncertainty of flux measurements and on flux spatial variability, which is a major cause of error when measured fluxes are scaled up spatially. The analysis focuses on 2415 flux measurements made with the closed chamber method over a monitoring campaign of approximately 3 years. > Statistically significant nonlinearities in the changes of N <sub>2</sub> O concentrations during chamber closure were infrequent (8.3%). Further analysis of significant non‐linear concentration changes indicates that, for positive fluxes, nonlinearity might not always be an artifact caused by chamber placement, but that it can reflect natural temporal variability of the flux during chamber placement in a significant number of cases. The analysis of the coefficients of determination ( R 2 ) and of the normalized root mean squared errors (NRMSE) of the linear regressions shows that, below emission rates of 5 g N <sub>2</sub> O‐N ha ?1 d ?1 , the uncertainty of flux estimates strongly increases. The flux detection limit was 3.5 g N <sub>2</sub> O‐N ha ?1 d ?1 , which i </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 XMLNS =“http://www.wiley.com/namespaces/wiley”type =“main”xml：lang =“en”> <title type =“main”>抽象</ title> >搜索对于减轻N <SUB> 2 </ SUB> O排放的农业实践以及模型的验证和开发，如果发射估计的不确定性相对于当前水平会降低。这种不确定性具有不同的来源，例如磁通量测量的错误，通过空间缩放测量对现场或区域级别引起的误差，以及通过插值测量之间的时间间隔的排放引起的误差。本文侧重于磁通测量的不确定性以及磁通空间变异性，这是当测量的助熔剂在空间上放大时出现错误的主要原因。该分析专注于2415次通过封闭式腔室方法进行的2415次磁通测量，在监测活动中大约3年。在腔室闭合期间N <亚/亚> o浓度的变化中的统计学上有显着的非线性罕见（8.3％）。进一步分析显着的非线性浓度变化表明，对于正助焊剂，非线性可能并不总是由腔室放置引起的伪像，而是可以在大量情况下反映腔室放置期间磁通量的自然时间变化。线性回归的测定系数（ r </ i> 2 ）和归一化的根均方平方误差（nrmse）的判定系数表明，低于5g n的排放率<sub> 2 </ sub> O-n ha Δ1</ sup> d ？1 </ sup>，助焊剂估计的不确定度强烈增加。磁通检测限为3.5g n <sub> 2 </ sub> O-n ha 1 </ sup> d ？1 </ sup>，我 </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-35667/'>《Journal of plant nutrition and soil science》</a> <b style="margin: 0 2px;">|</b><span>2018年第1期</span><b style="margin: 0 2px;">|</b><span>共12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=Lammirato Carlo&option=202" target="_blank" rel="nofollow">Lammirato Carlo;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Lebender Ulrike&option=202" target="_blank" rel="nofollow">Lebender Ulrike;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Tierling Jens&option=202" target="_blank" rel="nofollow">Tierling Jens;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Lammel Joachim&option=202" target="_blank" rel="nofollow">Lammel Joachim;</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>Research Center Crop Nutrition HanninghofYara International ASAHanninghof 35 48249 Duelmen Germany;</p> <p>Research Center Crop Nutrition HanninghofYara International ASAHanninghof 35 48249 Duelmen Germany;</p> <p>Research Center Crop Nutrition HanninghofYara International ASAHanninghof 35 48249 Duelmen Germany;</p> <p>Research Center Crop Nutrition HanninghofYara International ASAHanninghof 35 48249 Duelmen Germany;</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/212.html" title="农业基础科学">农业基础科学;</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=measuring precision&option=203" rel="nofollow">measuring precision;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=nitrous oxide emissions&option=203" rel="nofollow">nitrous oxide emissions;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=soil–atmosphere interface&option=203" rel="nofollow">soil–atmosphere interface;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=soil cover method&option=203" rel="nofollow">soil cover method;</a> </p> <div class="translation"> 机译：测量精度;氧化亚氮排放;土壤 - 大气界面;土壤覆盖方法; </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 >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704025819469.html">Analysis of uncertainty for N <sub xmlns="http://www.wiley.com/namespaces/wiley">2</sub>2 O fluxes measured with the closed‐chamber method under field conditions: Calculation method, detection limit, and spatial variability.</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Lammirato Carlo&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Lammirato Carlo,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Lebender Ulrike&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Lebender Ulrike,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Tierling Jens&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Tierling Jens,</a> <a href="/journal-foreign-35667/" target="_blank" rel="nofollow" class="tuijian_authcolor">Journal of plant nutrition and soil science .</a> <span>2018</span><span>,第1期</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：n <sub xmlns =“http://www.wiley.com/namespaces/wiley”> 2 </ sub> 2 o磁通量分析，在现场条件下测量闭合腔室方法：计算方法，检测限，和空间变异性。</span> </p> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704025121634.html">Detection of a novel <fi xmlns="http://www.wiley.com/namespaces/wiley"> <fc>HLA‐DRB1</fc> *09 </fi> <fc xmlns="http://www.wiley.com/namespaces/wiley">HLA‐DRB1</fc>HLA‐DRB1 *09 variant, <fi xmlns="http://www.wiley.com/namespaces/wiley"> <fc>HLA‐DRB1</fc> *09:31 </fi> <fc xmlns="http://www.wiley.com/namespaces/wiley">HLA‐DRB1</fc>HLA‐DRB1 *09:31 , in a College of American Pathologists <fc xmlns="http://www.wiley.com/namespaces/wiley">HLA</fc>HLA survey sample</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Yang K.‐L.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Yang K.‐L.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Lin P. Y.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Lin P. Y. </a> <a href="/journal-foreign-32551/" target="_blank" rel="nofollow" class="tuijian_authcolor">HLA. .</a> <span>2017</span><span>,第5期</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：检测一个新颖的<fi xmlns =“http://www.wiley.com/namespaces/wiley”> <fc> hla-drb1 </ fc> * 09 </ fi> <fc xmlns =“http：//www .wiley.com /命名空间/ wiley“> HLA-DRB1 </ FC> HLA-DRB1 * 09变量，<FI XMLNS =”http://www.wiley.com/namespaces/wiley“> <fc> hla-drb1 </ fc> * 09：31 </ fi> <fc xmlns =“http://www.wiley.com/namespaces/wiley”> hla-drb1 </ fc> hla-drb1 * 09：31，在大学美国病理学家<FC XMLNS =“http://www.wiley.com/namespaces/wiley”> hla </ fc> hla调查样本</span> </p> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704024958699.html">Thickness determination of <fc xmlns="http://www.wiley.com/namespaces/wiley">TiN</fc>TiN and <fc xmlns="http://www.wiley.com/namespaces/wiley">TiAl</fc>TiAl coatings on steel substrates using <fc xmlns="http://www.wiley.com/namespaces/wiley">X</fc>X ‐ray diffraction method and their composition measurements by <fc xmlns="http://www.wiley.com/namespaces/wiley">GD‐OES</fc>GD‐OES</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Aliaj Fisnik Rr.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Aliaj Fisnik Rr.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Syla Naim&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Syla Naim,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Oettel Heinrich&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Oettel Heinrich,</a> <a href="/journal-foreign-31633/" target="_blank" rel="nofollow" class="tuijian_authcolor">Surface and Interface Analysis: SIA: An International Journal Devoted to the Development and Application of Techniques for the Analysis of Surfaces, Interfaces and Thin Films .</a> <span>2017</span><span>,第11期</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：厚度确定<fc xmlns =“http://www.wiley.com/namespaces/wiley”> tin </ fc> tin和<fc xmlns =“http://www.wiley.com/namespaces/wiley”> 使用<fc xmlns =“http://www.wiley.com/namespaces/wiley”> x </ fc> x -ray衍射方法及其组成测量，钢基材上的tial </ fc>钢基材上的涂层涂层。<fc xmlns = “http://www.wiley.com/namespaces/wiley"> gd-oes</fc posegdoes.</span> </p> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/academic-degree-foreign_mphd_thesis/02061280514.html">Electronic states near surfaces: (a) Analysis of calculation methods using semi-infinite boundary conditions; (b) Sensitive detection using laser photoelectron spectroscopy.</a> <b>[D] </b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Abraham, Yonas Beyene.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Abraham, Yonas Beyene. </a> <span>2004</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：表面附近的电子状态：（a）使用半无限边界条件分析计算方法；（b）使用激光光电子能谱的灵敏检测。</span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/academic-journal-foreign-pmc_detail_thesis/040005155768.html">Hand-Held Refractometer-Based Measurement and Excess Permittivity Analysis Method for Detection of Diesel Oils Adulterated by Kerosene in Field Conditions</a> <b>[O] </b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Boniphace Kanyathare&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Boniphace Kanyathare,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kai-Erik Peiponen&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Kai-Erik Peiponen </a> <span>2018</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：基于手持折光仪的野外条件下检测煤油掺假柴油的测量和超介电常数分析方法</span> </p> </li> <li> <div> <b>6. </b><a class="enjiyixqcontent" href="/open-access_resources_thesis/01000126798260.html">Analysis of uncertainty for N2 O fluxes measured with the closed-chamber method under field conditions: Calculation method, detection limit, and spatial variability.</a> <b>[O] </b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Carlo Lammirato&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Carlo Lammirato,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ulrike Lebender&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Ulrike Lebender,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Jens Tierling&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Jens Tierling,</a> <span>2017</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：在现场条件下用闭合室法测量的N2 O助熔剂的不确定度分析：计算方法，检测极限和空间变异性。</span> </p> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/06130485786856.html">A method and circuit arrangement for detection and display of the in closed evacuate, in particular of the electrostatic filtration in the filter chamber, occurring changes of characteristic values of the prevailing conditions</a> <b>[P]</b> . <span> 外国专利：  DE2320112A1 </span> <span> . 1973-10-31</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：一种用于检测和显示封闭的真空，特别是过滤室中的静电过滤，并根据主要条件的特征值发生变化的方法和电路装置 </span> </p> </li> </ul> </div> </div> </div> <div class="theme cardcommon" style="overflow: auto;display:none"> <h3 class="all_title" id="enpatent55">相关主题</h3> <ul id="subject"> </ul> </div> </div> </div> </div> <div class="right rightcon"> <div class="details_img cardcommon clearfix" style="margin-bottom: 10px;display:none;" > </div> </div> </div> <div id="thesis_get_original1" class="downloadBth" style="bottom: 19px;z-index: 999;" onclick="ywcd('0704025819469','4',7,2,1,'',this,24)" class="delivery" prompt="010401" title="通过人工服务将文献原文发送至邮箱" >获取原文</div> <div class="journalsub-pop-up" style="display: none"> <div class="journal-sub"> <h2>期刊订阅</h2> <img src="https://cdn.zhangqiaokeyan.com/img/loginclose.png" alt="关闭" onclick="$('.journalsub-pop-up').hide()"> <p class="pardon">抱歉，该期刊暂不可订阅，敬请期待！</p> <p class="current">目前支持订阅全部北京大学中文核心（2020）期刊目录。</p> <div style="display: flex;margin-top: 69px;justify-content: space-between;"> <div class="no-sub" onclick="$('.journalsub-pop-up').hide()">暂不订阅</div> <div class="other-sub" onclick="continueSub('from=pc-detail')">继续订阅其他期刊</div> </div> </div> </div> <div class="right_btn"> <ul> <li class="gouwuche">  </li> <li class="yijian"> <a href="javascript:void(0);" onclick="link_analysis('/mycenter/auth/complaint.html',this)" title="意见反馈">意见反馈</a> </li> <li class="top"> <a href="javascript:scrollTo(0,0);" title="回到顶部">回到顶部</a> </li> <li class="shouye"> <a href="/" title="首页">回到首页</a> </li> </ul> </div> <div class="xllindexfooter"> <div class="xllindexfootercenter"> <div class="xllindexfooterleft left" > <div class="xllindexfooterleftli"> <ul> <li><a href="/about.html" title="关于掌桥">关于掌桥</a></li> <li><a href="/help/helpmap.html" title="资源导航">资源导航</a></li> <li><a href="/help/helpguide.html" title="新手指南">新手指南</a></li> <li><a href="/help/helpcenter.html" title="常见问题">常见问题</a></li> <li><a href="/sitemap.html" title="网站地图">网站地图</a></li> <li><a href="/help/helpcenter.html?type=9" title="版权声明">版权声明</a></li> </ul> </div> <div class="xllindexfooterleft"> <p class="xllindexfooterlefteamil">客服邮箱：kefu@zhangqiaokeyan.com</p> <div class="xllindexfooterlefttcp"> <div class="xllindexfooterpoliceiimg"></div> <div class="xllindexfooterpoliceispan"> <span>京公网安备：11010802029741号 </span> <span>ICP备案号：<a href="https://beian.miit.gov.cn" rel="nofollow" target="_blank" title="ICP备案号">京ICP备15016152号-6</a></span> <span>六维联合信息科技 (北京) 有限公司©版权所有</span> </div> </div> </div> </div> <div class="xllindexfooterright left"> <ul> <li> <p style="font-weight: bold;">客服微信</p> <div></div> </li> <li> <p style="font-weight: bold;">服务号</p> <div></div> </li> </ul> </div> </div> </div> <span id="0704025819469down" data-source="7," data-out-id="SFVM8TzH3lOcuC2IuG7OLA==," data-f-source-id="7" data-title="Analysis of uncertainty for N <sub xmlns='http://www.wiley.com/namespaces/wiley'>2</sub>2 O fluxes measured with the closed‐chamber method under field conditions: Calculation method, detection limit, and spatial variability." data-price="20" data-site-name="" data-transnum="24" style="display:none;"></span> <input type="hidden" value="4" id="sourcetype"> <input type="hidden" value="35667" id="journalid"> <input type="hidden" value="1" id="inyn_provide_service_level"> <input type="hidden" value="https://cdn.zhangqiaokeyan.com" id="imgcdn"> <input type="hidden" value="1" id="isdeatail"> <input type="hidden" value="" id="syyn_indexed_database"> <input type="hidden" value="" id="servicetype"> <input type="hidden" id="pagename" value="Analysis of uncertainty for N <sub xmlns='http://www.wiley.com/namespaces/wiley'>2</sub>2 O fluxes measured with the closed‐chamber method under field conditions: Calculation method, detection limit, and spatial variability."/> <input type="hidden" value="thesis_get_original" id="pageIdentification"> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/jquery-1.12.4.js"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/common/lwlh_ajax.js"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/zq.js?v=5.7.8"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/common/common.js?v=5.7.8"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/jquery.cookie.js"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/top.js?v=5.7.8"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/common/tip.js?v=5.7.8"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/common/login.js?v=5.7.8"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/common/down.js?v=5.7.8"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/common/search.js?v=5.7.8"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/common/newmail.js?v=5.7.8"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/searchtype.js?v=5.7.8"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/user/regist.js?v=5.7.8"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/zxs_solor/detail.js?v=5.7.8"></script> <script type="text/javascript" src="https://www.zhangqiaokeyan.com/statistics/static/pagecollection.js"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/tj.js"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/common/sse.js?v=5.7.8"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/pushbaidu.js"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/common/history.js"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/util/cookie.js?v=5.7.8"></script> <script type="text/javascript" src="https://cdn.zhangqiaokeyan.com/js/weipu/weipu.js?v=5.7.8"></script> </body> <script> function kefu(customization) { var from = GetQueryString("from"); if (from == null || from == "") { from = "other"; } var url = getWxWorkQrCode(55, from, customization); if (url == "" || typeof url == 'undefined') { url = "https://wework.qpic.cn/wwpic/994838_0LUTS-VqR0quT1N_1675665967/0"; } tipDocGuidance(url, '人工辅助获取外文期刊材料'); } $(function(){ var weiPuStatus = getCookie('WeiPuStatus'); if(weiPuStatus){ tipWeiPuStatus(weiPuStatus); delCookie('WeiPuStatus'); } getFacetKeywordVoInId(); var sourcetype = $("#sourcetype").val(); var inyn_provide_service_level = $("#inyn_provide_service_level").val(); if((sourcetype ==1||sourcetype==4)&&inyn_provide_service_level!=4){ getJournal(); } }) </script> </html>

Analysis of uncertainty for N 22 O fluxes measured with the closed‐chamber method under field conditions: Calculation method, detection limit, and spatial variability.

摘要

Analysis of uncertainty for N ₂2 O fluxes measured with the closed‐chamber method under field conditions: Calculation method, detection limit, and spatial variability.