甘肃省中南部甘南、临夏、定西、陇南4地(州)12个县是少数民族居住的高寒阴湿贫困地区。1991年以来甘肃省60多名林业科技人员经过艰苦努力,总结出了高寒阴湿贫困山区不同层次、不同类型的4种生态经济结构优化模式,并按照4种模式建立了11处示范推广点,概括地反映了高寒阴湿山区农林牧协调发展的自然规律和经济规律。此外,他 Gannan in southern central Gansu, Linxia, ​​Dingxi, Longnan 4 (prefectures) 12 counties are ethnic minority living in cold and humid areas of alpine. Since 1991, more than 60 forestry scientists and technicians in Gansu Province have worked hard to summarize four different types of ecological and economic structure optimization models at different levels and in different types in impoverished and impoverished mountainous areas. Eleven model extension points have been established according to the four models. It generally reflects the natural law and economic law of coordinated development of agriculture, forestry, livestock and husbandry in the alpine and humid mountainous areas. In addition, he