Combining a root exclusion technique with continuous chamber and porous tube measurements for a pin‐point separation of ecosystem respiration in croplands

Hoffmann Mathias; Wirth Stephan J.; Be?ler Holger; Engels Christof; Jochheim Hubert; Sommer Michael; Augustin Jürgen

摘要

Abstract > To better assess ecosystem C budgets of croplands and understand their potential response to climate and management changes, detailed information on the mechanisms and environmental controls driving the individual C flux components are needed. This accounts in particular for the ecosystem respiration (R <sub>eco</sub> ) and its components, the autotrophic (R <sub>a</sub> ) and heterotrophic respiration (R <sub>h</sub> ) which vary tremendously in time and space. This study presents a method to separate R <sub>eco</sub> into R <sub>a</sub> [as the sum of R <sub>a (shoot)</sub> and R <sub>a (root)</sub> ] and R <sub>h</sub> in order to detect temporal and small‐scale spatial dynamics within their relative contribution to overall R <sub>eco</sub> . Thus, predominant environmental drivers and underlying mechanisms can be revealed. R <sub>eco</sub> was derived during nighttime by automatic chamber CO <sub>2</sub> flux measurements on plant covered plots. R <sub>h</sub> was derived from CO <sub>2</sub> efflux measurements, which were performed in parallel to R <sub>eco</sub> measurements on a fallow plot using CO <sub>2</sub> sampling tubes in 10 cm soil depth. R <sub>a (root)</sub> was calculated as the difference between sampling tube CO <sub>2</sub> efflux measurements on a plant covered plot and R <sub>h</sub> . R <sub>a (shoot)</sub> was calculated as R <sub>eco</sub> – R <sub>a (root)</sub> – R <sub>h</sub> . Measurements were carr </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> >更好评估农田的生态系统C预算，了解他们对气候和管理变化的潜在应对，需要有关推动各种C通量部件的机制和环境控制的详细信息。这尤其涉及生态系统呼吸（R <sub> eCO </ sub>）及其组分，自养（R <sub> a </ sub>）和异养呼吸（R <sub> h </ sub>）在时间和空间中差异很大。本研究提出了将R <SUB> ECO </ SUB>分离为R <SUB> A </ SUB> [作为R <SUB> A（拍摄）</ sub>和R <sub> a（ root）</ sub>]和R <sub> h </ sub>，以检测它们在其相对贡献内的时间和小空间动态到总体R <sub> eco </ sub>。因此，可以揭示主要的环境驱动因素和潜在的机制。 R <SUB> ECO </ SUB>在夜间通过自动腔室CO <sub> 2 </ sub>通量测量来源于植物覆盖的图。 R <sub> h </ sub>源自CO <sub> 2 </ sub>流出测量，其与使用CO <sub> 2在休耕地板上并行地进行的R <SUB> ECO </ SUB>测量进行。 </ sub>在10厘米的土壤深度中采样管。 R <sub> a（根）</ sub>被计算为采样管CO <sub> 2之间的差异，植物覆盖的绘图图和R <sub> h </ sub>上的差异。 R <sub> a（拍摄）</ sub>被计算为R <sub> eco </ sub> - R <sub> a（根）</ sub> - R <sub> h </ sub>。测量是Carr. </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10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=Hoffmann Mathias&option=202" target="_blank" rel="nofollow">Hoffmann Mathias;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wirth Stephan J.&option=202" target="_blank" rel="nofollow">Wirth Stephan J.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Be?ler Holger&option=202" target="_blank" rel="nofollow">Be?ler Holger;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Engels Christof&option=202" target="_blank" rel="nofollow">Engels Christof;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Jochheim Hubert&option=202" target="_blank" rel="nofollow">Jochheim Hubert;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Sommer Michael&option=202" target="_blank" rel="nofollow">Sommer Michael;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Augustin Jürgen&option=202" target="_blank" rel="nofollow">Augustin Jürgen;</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>Institute of Soil Landscape ResearchLeibniz Centre for Agricultural Landscape Research (ZALF)15374 Müncheberg Germany;</p> <p>Institute of Landscape BiogeochemistryLeibniz Centre for Agricultural Landscape Research (ZALF)15374 Müncheberg Germany;</p> <p>Albrecht-Daniel-Thaer Institute of Agricultural and Horticultural SciencesHumboldt University Berlin10115 Berlin Germany;</p> <p>Albrecht-Daniel-Thaer Institute of Agricultural and Horticultural SciencesHumboldt University Berlin10115 Berlin Germany;</p> <p>Institute of Landscape Systems AnalysisLeibniz Centre for Agricultural Landscape Research (ZALF)15374 Müncheberg Germany;</p> <p>Institute of Soil Landscape ResearchLeibniz Centre for Agricultural Landscape Research (ZALF)15374 Müncheberg Germany;</p> <p>Institute of Landscape BiogeochemistryLeibniz Centre for Agricultural Landscape Research (ZALF)15374 Müncheberg 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=automatic chambers&option=203" rel="nofollow">automatic chambers;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=autotrophic respiration&option=203" rel="nofollow">autotrophic respiration;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=heterotrophic respiration&option=203" rel="nofollow">heterotrophic respiration;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=soil CO 2 sampling tubes&option=203" rel="nofollow">soil CO 2 sampling tubes;</a> </p> <div class="translation"> 机译：自动腔室;自养呼吸;异养呼吸;土壤二氧化碳排水管; </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/0704025819466.html">Combining a root exclusion technique with continuous chamber and porous tube measurements for a pin‐point separation of ecosystem respiration in croplands</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Hoffmann Mathias&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Hoffmann Mathias,</a> <a 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organic material, based on the continuous measurement.through a system of levers of power necessary for the separation of fabrics oi</a> <b>[P]</b> . <span> 外国专利：  ITMI910771D0 </span> <span> . 1991-03-22</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：连续测量的基础上，用于测量疤痕或其他有机材料的张力断裂的技术。通过分离织物所需的动力杠杆系统 </span> </p> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/patent-detail/06130461571443.html">COMBINED CENTRIFUGE TUBE AND POROUS SELECTION MEANS FOR SEPARATION AND RECOVERY OF BIOLOGICAL MATERIALS</a> <b>[P]</b> . <span> 外国专利：  EP0558473A1 </span> <span> . 1993-09-08</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：离心管和多孔选择装置的结合，用于生物材料的分离和回收 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" 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