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眼下国家推行的退耕还林项重点生态工程正在很好地实施,但是,在我省濮阳、商丘、开封、信阳等地方在退耕还林的过程中却出现单一杨树造林的现象,那么,单一树种大面积造林将绐我们造成什么样的危害呢?一些林业专家如此说:“谷丰必贱”这是常理,任何事情都不能不加思索地一哄而上。从经济学的观点来看,在商品供求关系
At present, the key ecological projects of the project of returning farmland to forestry are being well implemented in our country. However, in the areas of Puyang, Shangqiu, Kaifeng, Xinyang and other places in our province, there was a phenomenon of single poplar afforestation in the process of returning land for farming to forestry. It is common sense that some forestry experts say: “Gufeng must be cheap.” It is commonplace that any kind of thing can not be coaxed without thinking. From an economic point of view, the relationship between the supply and demand of goods