在具有丰富热带资源的西双版纳地区,从1953年开始到现在,已在48万亩的土地上,用典型的热带乔木树种——巴西三叶橡胶树及其下垫矮草组成的人工植物群落替换了原来的竹木混交林、竹林、灌丛、草地及少部分热带季节性雨林和南亚热带常绿栎林。这种人为的植物群落的替换是否会导致生态环境条件的退化呢?有许多专家学者甚至担心会像第一次大战后,美国中西部的牧场开垦为麦田和苏联1954年起在哈萨克斯坦 In Xishuangbanna, a region rich in tropical resources, from the beginning of 1953 up to the present, artificial plant communities consisting of the typical tropical tree species Trifolium pratense and its understory weeds have been replaced on 48 million mu of land The original bamboo mixed forest, bamboo, shrub, grassland and a small part of the tropical seasonal rainforest and the South subtropical evergreen oak forest. Will this artificial plant community lead to the degradation of ecological conditions? Many experts and scholars even worry that after the First World War, the pastures in the Midwest were reclaimed as wheat fields and the Soviet Union in Kazakhstan in 1954