Annual soil respiration under experimental drought and warming at Clocaenog forest (1999-2016)

The data consists of annual values of soil respiration for plots subjected to climate change manipulations between 1999 and 2016. Data were collected from the climate change field site Climoor that is located in Clocaenog forest, Northeast Wales. The experimental field site consists of three untreated control plots (Plots 3, 6 and 9), three plots where the plant canopy air is artificially warmed during night time hours (Plots 1, 2 and 7) and three plots where rainfall is excluded from the plots at least during the plant growing season (March to September, Plots 4, 5 and 8). Annual soil respiration values were calculated from fortnightly measurements of soil respiration. Soil respiration, milligrammes of Carbon dioxide - C per square metre per hour (mg CO2-C m-2 hr-1) was measured in the same pre-installed opaque soil collars. An infra-red gas analyser was used to measure the Carbon dioxide efflux. Annual soil respiration was calculated as sum of seasonal Carbon dioxide emissions. The Climoor field experiment intends to answer questions regarding the effects of warming and drought on ecosystem processes. Plot level soil respiration measurements are important to investigate soil carbon dynamics and changes in soil carbon cycling and storage under the imposed climatic treatments. More detailed information about the field site, measurements and related datasets can be found in the supporting documentation. Full details about this dataset can be found at https://doi.org/10.5285/253aa0a7-1d5a-446c-a5ca-fe2f0f50f6b1本数据集涵盖1999年至2016年间，接受人为气候变化操控处理的各试验样地的土壤呼吸年度数据。数据采集自位于威尔士东北部克洛埃诺戈（Clocaenog）森林的Climoor野外气候变化试验场。该试验场共设置9个样地，其中包括3个未施加任何处理的对照样地（3、6、9号样地）、3个夜间对植物冠层空气进行人工增温的处理样地（1、2、7号样地），以及3个至少在植物生长季（3月至9月）排除自然降雨的处理样地（4、5、8号样地）。年度土壤呼吸值由每两周一次的土壤呼吸测量结果计算得到。土壤呼吸的测定单位为每平方米每小时的二氧化碳碳毫克数（mg CO₂-C m⁻² hr⁻¹），测量均通过预先安装的不透明土壤环开展，并采用红外气体分析仪测定二氧化碳排放通量。年度土壤呼吸总量为各季节二氧化碳排放量的总和。Climoor野外试验旨在探究增温和干旱胁迫对生态系统过程的影响。样地尺度的土壤呼吸测量结果，对于解析施加气候处理后的土壤碳动态、土壤碳循环与储量变化具有重要价值。更多关于试验场设置、测量方法及相关数据集的详细信息可参阅配套辅助文档。本数据集的完整详细信息可通过以下链接获取：https://doi.org/10.5285/253aa0a7-1d5a-446c-a5ca-fe2f0f50f6b1