The Main Tree Species Close To Nature Management Technology Implementation And Evaluation In Gao County

"Close-to-nature forestry" refers to a forestry business pattern followed by natural conditions, which should guarantee self-preservation of forestry at first so as to be able to cultivate timber resources as well as to preserve the ecological environment. Its objective forest in business is "mingled forest-uneven aged forest-multiple layered forest" and its measure is "close-to-nature forestry operational approach"Taking the main commercial tree species with close-to-nature reconstruction in Gao county, Yibing city as research objects, this paper adopts material methodology, field monitoring method, comparative analysis approach and other research methods. it also do field researches in Laifu forest management station and Jiangyue forest management station in Gao county, gain some relevant information about current situation of implementation of close-to-nature management activities in Gao county, analyzes it so as to know its progress in management and finally conclude its successful experience as well as the existing problems and explore some relevant solutions. The results are as follows:(1)Through field monitoring and the following results are obtained① Main tree species of close-to-nature management in Laifu forest management stationIn 2014, among the subcompartment of forest management in Laifu forest management station, dominant tree species of the subcompaerment includes masson pine, eucalyptus grandis, cunninghamia lanceolate and slash pine.Thus it can be seen that subcompartment of masson pine ranks top in the total area of business activities followed by slash pine, cunninghamia lanceolate and eucalyptus grandis.② Main tree species of close-to-nature management in Yuejiang forest management stationIn 2014, among the subcompartment of forest management in Yuejiang forest management station, dominant tree species of the subcompaerment includes masson pine, pinus teada, cunninghamia lanceolate and slash pine. Thus it can be seen that subcompartment of masson pine ranks top in the total area of business activities followed by slash pine, cunninghamia lanceolate and pinus teada.③ In 2014, the intermediate area of forest management in Laifu forest management covers an area of 319.86 hm2, the improvement of stand condition in bamboo forest 13.83 hm2, restorative planting forest 21.39 hm2, nurse and management 714.01 hm2, and regeneration under forest canopy 153.74 hm2.④ In 2014, the intermediate area of forest management in Yuejiang forest management covers an area of 340.17 hm2, the improvement of stand condition in bamboo forest 130.91 hm2, restorative planting forest 103.34 hm2, nurse and management 891.25 hm2, and regeneration under forest canopy 174.98 hm2.(2)Through the sample survey the following results are obtainedIn the work of Laifu forest management station and Yuejiang forest management station a set of sample plot survey and found that each sample tree species of plants in competition, the number of target tree species, wood plants and wood stumpage competition are not the same, and at the same time can be found that most of the sample area marked the correct target tree species are there exist certain problems, most of the sample area of the phenomenon of competitive wood stumpage totally, this may affect the growth of the target species, tree species in the sample area number and average diameter at breast height and average tree height of target tree species there are big, the relationship between the sample area of stand density, the greater the average DBH of target tree species and the smaller the average tree height, so the reasonable density of trees will be conducive to the growth of the target species, as well as the growth of tree species in the sample area.(3)Experiences worthy of references in close-to-nature management activities in Gao county① established a set of complete and normative mode for sustainable forest management;② made improvements in infrastructure of forest management in work zone; ③ improved occupational qualities of foresters and management ability of management staffs;④ boost forest land productivity; ⑤ established a set of perfect forest preservation scheme;⑥ organized personnel training and carried out the full introduction and application of close-to-nature management ideas and technology in full swing.(4)Main problems in the close-to-nature management activities in Gao county① weakness in technical force and specialized knowledge;② poor site sonditions of parts of subcompartment; ③ deficiency of infrastructure in forest area;④ llack of management and protection;⑤ market downtown in local timber market;⑥ fierce damage of insect and disease.(5)countermeasure and suggestion① increase training efforts and introduce specialized personnel; ② decrease poor site conditions and human disturbance;③ close-to-narure management activities should lay emphasis on the principal of planting trees with local conditions;④ come to grips with the construction of forest road of close-to-nature management activities;⑤ enhance management and protection;⑥ change the development ideas and specify person in charge;⑦ enhance management of damage of disease and insect.Gao county, in general, the implementation of the close to nature management activity is quite successful, has been basically achieved the expected output results. This research also has been very successful, and summarizes the high county near nature of successful experience, points out the business activity. Innovative and high practical value to the research result, the conclusion can operate in high county after nearly natural activities play a role.