B1 - Field-scale net ecosystem exchange and feedback of subsurface heterogeneous structures with the atmosphere (B01)

我们将对净生态系统交换和土壤状态变量进行局地尺度的测量。使用AgroC的网格化一维模型计算土壤热通量、水通量和二氧化碳通量以及植物生长，将为D6开发的大涡模拟模型提供源/汇条件。耦合的AgroC/LES模型将用于研究由地下和地表异质性引入的CO2释放/吸收的场内空间格局如何以及在多大程度上反馈到大气CO2、水和热通量的时空变异性中。

We will perform local-scale measurements of net ecosystem exchange and soil status variables. Gridded 1D-model runs with AgroC, accounting for soil thermal, water and CO2 fluxes and plant growth, will provide the source/sink terms to the Large Eddy Simulation model developed by D6. The coupled AgroC/LES model will be used to investigate how and to which extent the within-field spatial pattern of CO2 release/uptake introduced by the subsurface and surface heterogeneities feeds back into the spatio-temporal variability of atmospheric CO2, water and heat fluxes.