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Changing sources and processes sustaining surface CO2 and CH4 fluxes along a tropical river to reservoir system
CO2 CH4 surface flux lakes
2021/6/11
Freshwaters are important emitters of carbon dioxide (CO2) and methane (CH4), two potent greenhouse gases (GHGs).
Urban rivers are hotspots of riverine greenhouse gas (N2O, CH4, CO2) emissions in the mixed-landscape chaohu lake basin
Urban rivers greenhouse gas GHG Global warming
2021/2/12
Growing evidence shows that riverine networks surrounding urban landscapes may be hotspots of riverine greenhouse gas (GHG) emissions.
Screening and Ranking of Chad Basin for co2 Sequestration Potential in Nigeria
Chad Basin Nigeria CO2 geological sequestration Criterion
2014/11/19
Sedimentary basins are suitable to different degrees for CO2 geological sequestration as a
result of various intrinsic and extrinsic characteristics. This paper preliminarily screened and
ranked t...
内蒙古半干旱草原CO2排放通量日变化特征及环境因子的贡献
内蒙古 羊草草原
2009/3/2
利用静态暗箱法对内蒙古半干旱羊草草原2001~2002年不同物候期原状群落与土壤呼吸通量日变化进行了野外定位试验研究, 并就水热因子(气温、表层地温、土壤表层含水量)及生态因子(地上活体现存量、地下生物量、凋落物现存量)对原状群落和土壤呼吸通量日变化规律及日呼吸量差异的贡献进行了相应的统计分析. 结果表明: 原状群落和土壤呼吸具有明显的日变化规律, 不同物候期呼吸通量的日变化模式基本相同, 环境因...
The Integrated Environmental Monitoring (IEM) project, part of the Asia-Pacific Environmental Innovation Strategy (APEIS) project, developed an integrated environmental monitoring system t...
秦巴山区植被固定CO2释放O2生态价值测评
2007/8/24
根据陕南秦巴山区植被类型及覆盖度的差异，利用改进型的自然植被NPP测算模型，结合区域能量平衡、水量平衡和蒸散模式，测定了植被有机质生产物质量。在此基础上，根据光合作用方程及造林成本法与工业制氧法测定了秦巴山区植被固定CO2 释放O2的经济价值。研究结果：① 秦巴山区植被每年固定CO2总量为13.5×107??t/a ,释放 O2总量为9??93×10????7?? t/a ...
GC. Moreover, in Kobresia humilis meadow, heterotrophic and autotrophic respiration accounted for 42% and 58% of the total respiration of soil-plant system respectively, whereas, in Potent...
In this paper, the CO2 concentrations profile from 1.5 m depth in soil to 32 m height in atmosphere were measured from July 2000 to July 2001 in an alpine grassland ecosystem located in th...
Using static chamber technique, fluxes of CO2, CH4 and N2O were measured in the alpine grassland area from July 2000 to July 2001, determinations of mean fluxes showed that CO2 and N2O wer...
华北平原典型农田水、热与CO2通量的测定
2007/8/24
在中国科学院栾城农业生态试验站用波文比-能量平衡法与涡度相关技术对净辐射通量 (Rn)、潜热通量 (λE)、感热通量 (H)、土壤热通量 (G) 与冠层CO2通量 (FCO2) 进行了长期定位研究。结果显示Rn大部分用于作物潜热的消耗，连续2年4个生长季λE/Rn都在70 %以上，在作物生育盛期，夏玉米λE/Rn 略高于冬小麦，H/Rn都在15%左右，G/Rn 在5 % -...