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- soil carbon sink 土壤碳库
- Dissolved organic carbon (DOC) is an important part of soil carbon pool. 溶解有机碳(Dissolved Organic Carbon,简称DOC)是土壤碳库的重要组成部分。
- The release of carbon and other main nutrients was slow,thus CWD exhibited an important long-term carbon sink in the forest. 虽然存在元素的净释放,但是由于C和其它主要元素的释放速率较慢,因而锥栗粗木质残体是森林中重要的C库和长期的元素来源。
- Forest is the largest reservoir of organic carbon in the terrestrial ecosystem, an important carbon sink and source, which has close relation with people's activity. 森林是陆地生态系统中最大的有机碳的贮库,是陆地生态系统中重要的碳汇和碳源,且和人类的活动息息相关。
- Agriculture plays an important role as a carbon “sink” through sequestering and storing greenhouse gases, especially as carbon in soils, plants and trees. 通过吸收和储存温室气体,特别是在土壤、植物和树木中,农业起到了碳“汇集地”的重要作用。
- Furthermore, reducing tillage increases soil carbon sequestration, compared with conventional moldboard plowing. 跟传统的板犁耕法比起来,减少犁田还可以增加土壤封存的碳。
- We have continued with the large-scale endeavor to return to farmland to forest and expand a forestation, and made vigorous effort to increase forest carbon sink. 我们持续大规模开展退耕还林和植树造林,大力增加森林碳汇。
- When primitive subalpine abies forest was deforested to cropland, soil carbon stock and its stability decreased. 人工林土壤呼吸速率大于天然次生林,农地和草地呼吸速率最低。
- S. croplands to sequester soil carbon comes from conservation tillage, including no-till. 美国农地封存碳的潜能约有一半来自保育耕法,其中就包括不整地栽培法。
- Contents of all types of soil carbon and CPMI were improved when the straw was retuned to the soil. 秸秆还田免耕、旋耕提高了土壤不同形态碳素含量和碳库管理指数;
- Yang, J.C., J.H.Huang, Q.M Pan, J.W.Tang, X.G.Han. 2004.Long-term impacts of land-use change on dynamics of tropical soil carbon and nitrogen poois. 杨景成;黄建辉;唐建维;潘庆民;韩兴国.;2005
- Conclusions are reached as follows: (1) The total carbon sink of the farmland ecosystem in coastal China was zigzagging upward since 1981, and the total carbon emission climbing rapidly. 二者相比,碳排放明显低于碳吸收,但由主要途径农业投入导致的间接碳排放的增长速度(94%25)超过了作物生育期碳吸收的增长速度(44%25)。
- Pan G X,Li L Q,Zhang X H.Perspectives on issues of soil carbon pools and global change[J].J.of Nanjing Agric.Univ.,2002,25(3):79-88. [8]潘根兴;李恋卿;张旭辉.;土壤有机碳库与全球变化研究的若干前沿问题[J]
- Knoepp, J. D. and W. T. Swank (1997) Forest management effects on surface soil carbon and nitrogen. Soil Science Society of America Journal 61: 928-935. 颜江河(2005)森林土壤的碳吸存量。森林与环境变迁研讨会论文集。国立中兴大学森林学系主办。国立中兴大学农业暨自然资源学院十楼国际会议厅。226页。
- Recently much effort has been spend on the evaluation of soil carbon sequestration potential as a measure to temporarily reduce the increasing rate of atmospheric GHGs. 近年来有许多研究致力于探讨土壤碳封存能力,期望能减缓大气温室气体增加的速度。
- Correlation analysis revealed that CPMI may be a better indicator than soil organic matter employed to reflect the dynamic changes of soil nutrients and soil carbon. 相关性分析表明,运用土壤碳库管理指数表征土壤养份及碳素动态变化比土壤有机碳更具灵敏性。
- LI Changsheng.Loss of soil carbon threatens Chinese agriculture:a comparison on agroecosystem carbon pool in China and the U.S.[J].Quaternary Sciences,2000,20 (4):345-350. [5]长生.;土壤碳储量减少:中国农业之隐患-中美农业生态系统碳循环对比研究[J]
- Forests act as "carbon sinks" -they absorb carbon dioxide from the air and retain it by turning it into more trees. 森林起着"让碳下降"的作用--他们吸收空气中的二氧化碳,然后将它们保留在更多树木中。
- This is because carbon-isotope fractiontion of soil carbonate is mainly controlled by the composition of soil CO2, which is determined by the biomass of C3 and C4 plants. 这是因为土壤碳酸盐中的碳稳定同位素的分馏过程主要取决于土壤当中的CO2气体的碳同位素分馏状况,而后者又主要与成土时上覆植被的类型(C3、C4型植物)有关。
- Most climatologists agree that due to deforestation and saturation of other carbon sinks, human GHG emissions are almost twice the rate of removal. 许多气象学家都认为由于森林采伐和其他碳吸收源的饱和,人类排放温室气体的速率是移除速率的两倍。