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TRIPS 2.0: Toward more comprehensive modeling of radiocaesium cycling in forest.
Journal of Environmental Radioactivity ( IF 1.9 ) Pub Date : 2020-01-25 , DOI: 10.1016/j.jenvrad.2020.106171
Y Thiry 1 , T Tanaka 2 , A A Dvornik 3 , A M Dvornik 4
Affiliation  

Because internal transfers can play a key role in radiocaesium persistence in trees, a reliable representation of radiocaesium recycling between tree organs in forest models is important for long-term simulations after radioactive fallout in Chernobyl and Fukushima. We developed an upgraded 2.0 version of the initial TRIPS ("Transfer of Radionuclides In Perennial vegetation System") model involving explicit differentiation between tree organs (i.e., foliage, branches, stemwood and bark). The quality of TRIPS 2.0 was evaluated by testing model outputs against independent datasets for pine stands in Belarus and Ukraine. Scenarios involving "hot particle" deposits in forest remained challenging, but in all other scenarios generally positive verification results for soil and tree compartments indicated that the TRIPS 2.0 model adequately combines the major relevant processes. Interestingly, the response of stemwood contamination to changes in radiocaesium availability in soil, as determined by soil conditions, was shown to be more sensitive than for other tree compartments. We recommend the conceptual tree discretization of TRIPS 2.0 for generic forest modeling for two reasons: 1) regardless of different soil conditions, there was concurrent good agreement between simulations and data for individual tree compartments (foliage, branches, stemwood and bark), and 2) the measurements necessary to estimate internal tree transfers are easily accessible to usual field monitoring in forest biogeochemistry (for details, see Goor, F. & Thiry, Y., 2004. Science of the total environment, 325(1-3), 163-180).

中文翻译:

TRIPS 2.0:旨在对森林中放射性铯循环进行更全面的建模。

由于内部转移可在树木中放射性铯的持久性中发挥关键作用,因此在森林模型中树木器官之间放射性铯循环的可靠表示对于切尔诺贝利和福岛的放射性沉降后的长期模拟非常重要。我们开发了初始TRIPS(“多年生植物系统中放射性核素的转移”)模型的升级版2.0版,该模型涉及树木器官(例如,树叶,树枝,茎木和树皮)之间的显着区别。通过针对白俄罗斯和乌克兰的松林独立数据集测试模型输出,评估了TRIPS 2.0的质量。涉及森林中“热粒子”沉积物的方案仍然具有挑战性,但是在所有其他方案中,土壤和树木隔间的积极验证结果通常表明TRIPS 2。0模型充分结合了主要的相关过程。有趣的是,由土壤条件确定的,对木材中污染物对放射性铯利用率的响应,比对其他树木区系的响应更敏感。我们建议将TRIPS 2.0的概念树离散化用于常规森林建模,原因有二:1)无论土壤条件如何,单个树区(树叶,树枝,茎材和树皮)的仿真和数据之间并存良好的一致性,以及2 )估计内部树木转移所需的测量值很容易通过森林生物地球化学中的常规田间监测获得(有关详细信息,请参见Goor,F.&Thiry,Y.,2004。《整体环境科学》,325(1-3),163 -180)。结果表明,由土壤条件决定的枯木污染对土壤中放射性铯利用率变化的响应比其他树木区划更为敏感。我们建议将TRIPS 2.0的概念树离散化用于常规森林建模,原因有二:1)无论土壤条件如何,单个树区(树叶,树枝,茎材和树皮)的仿真和数据之间并存良好的一致性,以及2 )估计内部树木转移所需的测量值很容易通过森林生物地球化学中的常规田间监测获得(有关详细信息,请参见Goor,F.&Thiry,Y.,2004。《整体环境科学》,325(1-3),163 -180)。结果表明,由土壤条件决定的枯木污染对土壤中放射性铯利用率变化的响应比其他树木区划更为敏感。我们建议将TRIPS 2.0的概念树离散化用于常规森林建模,原因有二:1)无论土壤条件如何,单个树区(树叶,树枝,茎材和树皮)的仿真和数据之间并存良好的一致性,以及2 )估计内部树木转移所需的测量值很容易通过森林生物地球化学中的常规田间监测获得(有关详细信息,请参见Goor,F.&Thiry,Y.,2004。《整体环境科学》,325(1-3),163 -180)。被证明比其他树格更为敏感。我们建议将TRIPS 2.0的概念树离散化用于常规森林建模,原因有二:1)无论土壤条件如何,单个树区(树叶,树枝,茎材和树皮)的仿真和数据之间并存良好的一致性,以及2 )估计内部树木转移所需的测量值很容易通过森林生物地球化学中的常规田间监测获得(有关详细信息,请参见Goor,F.&Thiry,Y.,2004。《整体环境科学》,325(1-3),163 -180)。被证明比其他树格更为敏感。我们建议将TRIPS 2.0的概念树离散化用于常规森林建模,原因有两个:1)不管土壤条件如何,单个树区(树叶,树枝,茎材和树皮)的仿真和数据之间并存良好的一致性,以及2 )估计内部树木转移所需的测量值很容易通过森林生物地球化学中的常规田间监测获得(有关详细信息,请参见Goor,F.&Thiry,Y.,2004。《整体环境科学》,325(1-3),163 -180)。
更新日期:2020-01-25
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