长白落叶松“两行一带”造林模式的合理性研究

边缘效应(Edge effect)的优势已被人们普遍认识。根据边缘效应的原理,运用"两行一带"的造林模式,人工建立长白落叶松4m、8m、12m带效应区,对其水分、土壤温度、土壤元素及生产力情况进行分析,得出结论:8m效应带是最佳选择。原因是它既能保证保留带林木的正常生长,又能为效应带创造优良的生态条件;既符合国家资源调查的有关技术规定,认定为片林,又能使林分达到生态、社会、经济三大效益的最佳结合。

Study on Rationalisation about Afforestation Model of "Two Lines and One Belt" in Larix olgensis.Forest

The superiority of the edge effect has all been known.The effect zones of 4m,8m and12m are established as the theory of the edge effect through the afforestation model of "two lines and one belt" in Larix olgensis.forest.The conclusion is that the effect belt of 8m is the best choice through the analysis on the water,the soil temperature,the soil element and the productive forces.The reason is that it can make the trees grow normally in the retain belt and make fine ecological conditions for the effect belt.On the other hand,the converted farmland can be identified as forestland since the technological rules about the resources investigation by government and the policy about the convrsion from farmland to forest project can be used totally.In the meantime,the ecological,social and economic benefits can be combined perfectly in the converted farmland.