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carbon dynamics     
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  碳动态
     A field study was conducted to study soil organic carbon dynamics in Caragana microphylla stands in an age sequence of 0-,5-,10-,and 22-yr plantations in the Horqin Sandy Land,north China.
     通过田间小区取样,研究了科尔沁沙地小叶锦鸡儿(Caragana microphylla)人工固沙林0~50 cm土层在0、5、10、22年的时间序列上土壤有机碳动态
短句来源
     Carbon Dynamics and Balance in the Ecosystem of the Young and Middle-Aged Second-Generation Chinese Fir Plantation
     第二代杉木中幼林生态系统碳动态与平衡
短句来源
     Simulation and Prediction of Soil Organic Carbon Dynamics in Jiangsu Province Based on Model and GIS Techniques
     基于模型和GIS的江苏省农田土壤有机碳动态研究
短句来源
     The Progress of Study on Soil Organic Carbon Dynamics in Cropland
     农田土壤有机碳动态研究进展
短句来源
     Biomass and soil organic carbon dynamics of Cryptomeria fortunei plantations at 5,10,17,22 and 26 years-old were studied at Pengzhou County,Sichuan Province,employing volume-biomass method and soil profile investigation. Biomass of C.
     以四川彭州为典型案例,采用材积源生物量法和土壤剖面分析方法,对栽植5、10、17、22和26年的人工柳杉林生物量及其土壤碳动态进行了初步研究.
短句来源
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  碳动态变化
     Simulation of Soil Organic Carbon Dynamics Based on Integrated Forest Ecosystem Carbon-Budget Model
     利用森林生态系统碳循环综合模型模拟土壤有机碳动态变化
短句来源
     Effect of Agricultural Practices on Soil Organic Carbon Dynamics
     农业管理措施对土壤有机碳动态变化的影响
短句来源
     Soil Organic Carbon Dynamics and Validation of InTEC Model in China's Subtropical and Temperate Zones
     我国亚热带和温带土壤有机碳动态变化及InTEC模型的验证
短句来源
     Effects of Cultivation on Soil Organic Carbon Dynamics in Agroecosystems
     开垦对农业生态系统土壤有机碳动态变化的影响
短句来源
     The results of soil organic carbon dynamics show that C. microphylla plantation is a practical forestry engineering measure in rehabilitating the ecosystems in the Horqin Sandy Land.
     土壤有机碳动态变化的研究结果表明,种植小叶锦鸡儿人工林是科尔沁沙地生态系统恢复重建的一项切实可行的林业工程措施。
短句来源
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  碳动力学
     PROGRESSES IN THE STUDY OF CARBON ISOTOPES TRACING OF THE SOIL CARBON DYNAMICS
     土壤碳动力学同位素示踪研究进展
短句来源
     Isotope Tracing of Soil Organic Carbon Dynamics in the Grassland
     草原土壤有机碳动力学同位素示踪研究
短句来源
     High-resolution sampling, measurement and analysis of root content, organic matter content, ~(14)C specific activity, δ~(13)C and magnetic susceptibility of selected all 6 soil profiles in Haibei Research Station of Alpine Meadow Ecosystem in the Tibetan Plateau and Inner Mongolia Grassland Ecosystem Research Station, CAS, were made in an attempt to detect the soil organic carbon dynamics of grassland.
     本文对海北高寒草甸生态系统定位研究站和内蒙古草原生态系统定位研究站的6个土壤剖面进行了高分辨率薄层取样,测试、分析了样品的根系和有机碳含量、有机质的放射性和稳定碳同位素组成、磁化率等,研究了土壤有机碳动力学过程,得出如下结论:
短句来源
     Vegetation types control the soil organic carbon dynamics.
     植被类型制约土壤剖面的有机碳动力学过程。
短句来源
     Soil organic carbon dynamics can be reflected to some extent by the soil quality magnetic susceptibility and root content.
     土壤磁化率、根生物量在一定程度上可以反映土壤有机碳动力学过程。
短句来源
  碳素动态
     Productivity and Carbon Dynamics of Masson Pine Plantation
     马尾松人工林生产与碳素动态
短句来源
     Carbon dynamics of Masson pine plantation in different age classes (8 a, 14 a, 23 a, 38 a) in the central hilly area of Guangxi, China was studied based on the estimation of their biomass and net primary production (NPP).
     对广西中部丘陵区不同年龄阶段(8年生、14年生、23年生、38年生)的马尾松人工林生物量和净生产量进行了研究,探讨了该人工林生产与碳素动态.
短句来源

 

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      carbon dynamics
    Soil organic carbon dynamics in ecosystem plays a great role in global carbon cycle and global change.
          
    With development of mathematical models that simulate changes in soil organic carbon, there have been considerable advances in understanding soil organic carbon dynamics.
          
    Carbon dynamics of grasslands on the Qinghai-Tibetan Plateau may play an important role in regional and global carbon cycles.
          
    Methodology for studies of carbon dynamics between phytoplankton primary production and heterotrophic bacterial secondary produc
          
    The SCENTO-System was used to study the carbon dynamics between phytoplankton primary production and heterotrophic bacterial secondary production.
          
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    The forest dominated by Cyclobalanopsis glauca is a main subtropical evergreen broad-leaved forest type in South-East China.Carbon dynamics including the concentration,standing crop,retention,return amount via litterfall and release amount is studied.The results show that:The concentration of carbon is higher in spring and summer,leaf and the tree layer,and lower in fall and winter, root and the herb layer.The standing crop of carbon is 66.11t/hm2, and it focuses on the tree layer or evergreen...

    The forest dominated by Cyclobalanopsis glauca is a main subtropical evergreen broad-leaved forest type in South-East China.Carbon dynamics including the concentration,standing crop,retention,return amount via litterfall and release amount is studied.The results show that:The concentration of carbon is higher in spring and summer,leaf and the tree layer,and lower in fall and winter, root and the herb layer.The standing crop of carbon is 66.11t/hm2, and it focuses on the tree layer or evergreen species.The return amount via litterfall of carbon is 2.296t/hm2·a and the release amount of carbon from the forest floor to the air is 0.911t/hm2·a.

    报道了浙江建德青冈林碳素的含量、现存量、存留量、归还量、释放量以及在生态系统中的动态过程。结果表明:植物群落中碳素含量的变化幅度不大,一般在10%以下。其中,叶片(器官比较)、乔木层(层次比较)和春夏季(季节比较)的含量稍高,根系、草本层、秋冬季的含量稍低。群落的碳素现存量为66.113t/hm2,主要集中在乔木层或常绿树种内;群落的碳素存留量为5.691t/m2·a;每年通过凋落物归还至地表的量为2.296t/m2·a;死地被物中又有0.911t/hm2·a的碳素释放至大气库中。

    Double component model was used to simulate the soil organic carbon dynamics after changing landuse pattern in hilly red soil region of subtropical China, and investigation and monitoring data were used to evaluate it. The model distinguished soil organic carbon into two compartments, i.e. newly formed organic carbon and native organic carbon. The transformation of each kind of organic carbon was described by the first order kinetics function, and the changing process of...

    Double component model was used to simulate the soil organic carbon dynamics after changing landuse pattern in hilly red soil region of subtropical China, and investigation and monitoring data were used to evaluate it. The model distinguished soil organic carbon into two compartments, i.e. newly formed organic carbon and native organic carbon. The transformation of each kind of organic carbon was described by the first order kinetics function, and the changing process of soil organic carbon storage in four landuse patterns of masson pine forest, slash pine forest, citrus orchard and pasture since natural subtropical soils being reclaimed for 10 years was simulated. The results show that this method fits to simulate the dynamic process of soil organic carbon storage during the early stage of changing landuse patterns with different soil types.

    采用双组分模型模拟土地利用方式变更后土壤有机碳储量的变化,并用一些调查和监测数据进行了初步验证.此双组分模型将土壤有机碳分为新形成有机碳和原有有机碳两个组分.每个组分有机碳的形成转化用一级动力学方程描述.本文用此模型对亚热带土壤开垦利用为马尾松林地、湿地松林地、柑桔园和牧草地4种方式10年来土壤有机碳储量的变化过程进行了模拟,初步结果表明,模拟值与实测值拟合较好.可见,此方法适于用来模拟不同土壤类型下土地利用系统变更初期的土壤有机碳储量动态变化过程.

    Soil is a core of terrestrial ecosystem, and soil organic carbon is the main part of terrestrial carbon reservior. At present, terrestrial carbon cycle is one of the important components in the research of global change, so it is important to study soil carbon cycle. One precondition of terrestrial ecosystem carbon cycle research is to understand soil carbon dynamics in China. The composition and dynamic change of soil organic carbon is more significant in soil carbon cycle research in China....

    Soil is a core of terrestrial ecosystem, and soil organic carbon is the main part of terrestrial carbon reservior. At present, terrestrial carbon cycle is one of the important components in the research of global change, so it is important to study soil carbon cycle. One precondition of terrestrial ecosystem carbon cycle research is to understand soil carbon dynamics in China. The composition and dynamic change of soil organic carbon is more significant in soil carbon cycle research in China. However, soil organic carbon is not accurately defined in China, so people did not fully recognize its importance to global climate change. This paper adopted the soil distribution area, sampling data and soil organic content from the first soil general survey and applied the technique of GIS to estimate soil carbon reservior in China. Through calculating, the total amount of soil organic carbon is about 1 001 8×10 8t and carbon density is about 10 83 kgC/m 2 in China. This paper provided basic data and analysis method for global change research and scientific support for policy determination of CO 2 emission in China.

    土壤是陆地生态系统的核心之一, 土壤有机碳库是陆地碳库的主要组成部分, 在陆地碳循环研究中有着重要的作用。因而了解土壤碳循环是研究中国陆地生态系统碳循环的基础, 确定土壤有机碳的储量、空间分布, 对土壤碳循环的研究具有重要意义。根据中国第一次土壤普查得到的土壤各类型分布面积、采样数据、土壤有机质含量, 运用GIS技术, 来估算土壤碳库。经过计算,中国陆地生态系统土壤有机碳总量为1 001.8×108t ,平均碳密度为10.83 kgC/m 2,这表明中国土壤是一个巨大的碳库。

     
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