Study On Dynamic Of Forest Resources And Sustainable Evaluation In Hainan

Forest resources is not only a renewable natural resource, but a bridge of environment and socio-economic development by means of it's large benefit. It is a very important problem and the key of the sustainable development of socio-economic-enviromental system that how to accommodate and control the forest resources, guarautee it's sustainability, enhance it's ability of sustainable development, meet the huge need of socio-economic development. Hainan Island is one of the major tropical areas in China, where large area of primitive tropical forest was preserved, it has large advantages to develop tropical forest resources. Therefore, it is very important for construction of the ecological province of Hainan to explore methods and approaches in sustainable management of tropical forest resources.1 This paper analyzed the dynamic process of the forest resources in Hainan province. Described dynamic trend of the forest resources after founding of new China. The result indicated that the tropical forest resources achieved increases in both stock volume and area. The structure of forest resources was not so good with low forest productivity. The percapita availability of forest resources is low uneven distribution of the resources.2 The macro-trend of sustainability of forest resources have been analysised, the result shows that the trend of the forest development was good, the utilization of forest resources was on the way of sustainability, but the ability of sustainability was low. Forest resources have begun evolve from preliminary state of unsustainable to the state of sustainable.3 The GM(1,1) prediction model of forest resources is established by means of the gray-system and the major quota of forest resources check data in 2008 have been predicted. The result shows that the forest coverage will get (58±0.56)%, and it is possible to get 60% in 2010. The forest land will get (192±5.03)×104hm2, the trend fo unit area stand volume will decline.4 The state of existing forest sustainable management was mid-less, whose integration was 0.747 to the forest resources of hainan province for the first time.The bio-diversity was abundant , the ecological efficiency was great; the structure of forest resource was stabile. But, the gross forest resources was low; the capacity of natural regeneration not good; the social-economic benefits was low. All of above indicated that, the primary factor which restrict hainan forest sustainable management was the social-economic benefit.