论文部分内容阅读
一、对四川生态失调的认识 森林是生态的主体,对四川森林面积下降引起生态失调的问题,在认识上不一致。一些学者撰写的文章中,较多的看法是归罪于岷江上游森林面积减少,造成四川生态失调。这是不完全符合实际的。四川森林复被率下降,岂只是岷江上游,其他地方也同样下降,下降幅度比岷江上游大。岷江上游的森林复被率,由解放初期的30%降到18%,减少12%。同期盆中丘陵的内江地区的森林复被率减少12.4%,绵阳地区减少14.1%,南充地区减少13.2%。边缘山区的达县地区减少10%,万县地区减少15%,雅安地区减少25%。正由于全省的森林复
First, the understanding of ecological imbalance in Sichuan Forest is the main body of ecology, ecological problems caused by the decline of forest area in Sichuan, the understanding is inconsistent. Some scholars write articles, more views are blamed on the Minjiang River upstream forest area reduction, resulting in Sichuan ecological disorders. This is not entirely realistic. The rate of restoration of the forest in Sichuan has dropped, not only in the upper reaches of the Minjiang River, but also in other places as well, with a larger drop than the upper reaches of the Minjiang River. The forest recuperation rate in the upper reaches of Minjiang River decreased from 30% in the early liberation period to 18%, a decrease of 12%. In the same period, the forest coverage rate in the Neijiang area of the basin hilly area decreased by 12.4%, that in Mianyang area decreased by 14.1% and that in Nanchong area decreased by 13.2%. Daxian in the mountainous areas is reduced by 10%, in Wanxian by 15% and in Ya’an by 25%. Because of the province’s forest complex