第一节 腐食生物群落生态工程 以死生物为营养的生物,如真菌、细菌和土壤动物等,所构成的腐生食物链,在天然生态系统中占有非常重要的地位。在天然森林生态系统中,99％的能量流都进入了腐食链的通道;在天然草原生态系统中,75％左右的能量流进入了腐食链的通道。而人类的农耕和放牧几乎在所有场合下都降低了能量流经 The first section of the decay ecological community Ecological engineering to die living organisms, such as fungi, bacteria and soil animals, which constitute the saprophytic food chain, occupy a very important position in the natural ecosystem. In natural forest ecosystems, 99% of the energy flow enters the rot chain; in natural grassland ecosystems about 75% of the energy flows into the rot chain. However, human farming and grazing reduce energy flow in almost all settings