Study on evolution of hydrobiogeochemistry with forest succession in humid temperate region

在订购时，要检查森林生长对酸缓冲过程的各种影响，羟基观察在三种不同的温度捕获中产生了三种不同的温度捕获，每个共享相同的花岗岩基岩，但在生长条件和土壤深度中有不同的森林。这些水堆中的水处理过程被归类为：（1）穿过过程， （2）土壤渗透过程， （表面和次表面土壤层渗透子过程，以及饱和的地面水转移子过程）和（3）流脱离过程。pH值、质子通量的空间分布以及质子生产和消费过程的变化是明确的。具体而言，观察到的变化是通过迁移生长来实现的; （1）有机物质产生的protons的分解;（2）添加到化学天气中，开始了cation交换过程，以在表面土壤层中使用protons。（3）作为一个结果，质子生产相对而言 ... More 比表面土壤层的消费大，有些未消费的原型已经转移到了表面土壤层和消费的地方。Specifically Observed changes relating to soil depth were ; （1） pCO d22 d2 level at the groundwater is increased， as the soil layer is thicker。（2） As a result， pH after degassing is increased as the soil depth increased。第二，要量化森林繁殖对酸缓冲过程的影响，两年后的羟基观测数据被用来计算三个小捕获中的质子填充物，每一个都有相同的稳定性，但在孵化开发条件下的差异。森林捕获中的生物活动增加了，有机物质和转化的矿物化增加了净质子生产。在森林捕获中，在减少的传输流中发生了变化。As a result， proton production by the dissociation of COイイD22イエD2 decreased。如果按投票纳入质子预算中的估计值增加了质子产品的价值，那么森林的开发将这些净质子产品的总和增加到2.3至4.0次，即裸捕获。However，超过96%的质子产品是由猎物中的天气和阴极交换所消费的。It became apparent that the sum of these net proton products by atmospheric input， N transformation， assimilation of cations， and dissociation of COイイD22イエD2 is strongly affected by the amount of annual precipitation and annual runoff。质子生产的变化到每年的预测水平几乎等于质子生产中的增加幅度的范围，以森林增长的速度。Less（低）

In order to examine the various impacts of the forest growth on the acid buffering processes, hydrochemical observations were carried out in three different temperate catchments, each shares the same granitic bedrock , but having a forest different in growth conditions and soil depth. Hydrological processes in those watersheds were classified as; (1) the throughfall process, (2) soil infiltration process, (surface and subsurface soil layer infiltration sub-process, and the saturated groundwater transfer sub-process) and (3) the stream runoff process. The spatial distribution of pH, proton fluxes, and the changes of the proton producing and consuming processes were clarified. Specifically observed as changes accompanied by the vegetation growth were; (1) the decomposition of organic matters generated protons and (2) in addition to the chemical weathering , the cation exchange process started to consume protons in surface soil layer. (3) as a result, the proton production was relatively … More greater than consumption the surface soil layer, and some of the protons left unconsumed were transferred down to the subsurface soil layer and consumed. Specifically observed changes relating to soil depth were ; (1) pCOィイD22ィエD2 level at the groundwater is increased, as the soil layer is thicker. (2) As a result, pH after degassing is increased as the soil depth increased. Second, to quantify the impacts of forest vegetation on the acid buffering processes, hydrochemical observation data for two separate years were used to calculate the proton budgets in three small catchments, each consisting of the same granitic bedrock, but differing in vegetation development conditions. The increase in biological activity in the forested catchments, increased the net proton production by mineralization of organic matters and N transformation. In the forested catchments, the increase in transpiration reduced stream runoff. As a result, proton production by the dissociation of COィイD22ィエD2 decreased. When the estimated value for the cation uptake by vegetation was included in the proton budget, forest development increased the sum of these net proton productions by 2.3 to 4.0 times that of bare catchments. However, more than 96% of these proton productions were consumed by weathering and cation exchange within the catchments. It became apparent that the sum of these net proton productions by atmospheric input, N transformation, assimilation of cations, and dissociation of COィイD22ィエD2 is strongly affected by the amount of annual precipitation and annual runoff. The variance of proton production due to the fluctuation of annual precipitation almost equals the range of the increase in proton production by forest growth. Less