东北高寒地区麦田土壤中枯枝落叶的分解及能量流动

【摘要】 分析了东北高寒地区麦田枯枝落叶在土壤亚系统中的分解及其能量流动。枯枝落叶的分解主要集中在7～8月份．与土壤微生物和动物有密切关系：枯枝落叶中的能量需3．5～4年才能完全释放。目前安山能流是输入大于输出．尚未达到平衡．只是一种渐进性稳态．属负反馈调节．即土壤亚系统具有抵抗干扰和保持平衡的自我调节能力。更多还原

【Abstract】 The paper studied the law of decomposition and energy flow of wheat litter of the northeast heavy frigid region of China in the Soil Subsystem. The result indicated that the decomposition on litter mainly is from July to August. closely relates to the microorganism and animal in the soil.The complete releast of the energy in litter need 3. 5-4 years. The import is bigger than tile export about the energy in litter. tile energy flow only is asymptotic stability state. is still not real equilibrium at the present. The mechanism of equilibrium is the negative feedback mechanism. the soil subsystem has an ability of self-regulation that can resist Perturbation and maintain its equilibrium state.更多还原