论文部分内容阅读
草防林中的绿伞是一种特殊的林分结构类型，由于一般面积较小，不能形成森林，但为牲畜改善了生境条件，提供了避难场所。放牧地上的绿伞有区别于森林和草地的独特的小气候和生物。它使草地生态系统的生态位得以增进，促进了草地生态系统的能量流动和循环，增加了物质产出。1试
The green umbrella in grass and forest is a special type of stand structure. Due to its small area, it can not form a forest. However, it improves habitat conditions and provides shelter for livestock. The green umbrellas on grazing land have unique microclimates and creatures that distinguish them from forests and meadows. It enhances the niche of grassland ecosystems, promotes the energy flow and circulation of grassland ecosystems, and increases material output. 1 trial