| The concept of ecological landscape forest is new,and there is no universal definition.Through the literature review,It analyze that concept and connotation of scenic forest and ecological landscape forest.And it is believed that ecological landscape forest is mainly landscape effect,the second is ecological function.and it focus on appreciates functionality.It will become an important landscape resource and ecological barrier.And it will play a unique role in building ecological civilization.So far,the domestic ecological landscape forest structure is single,the density of the forest is large,the landscape is poor but the related tending technology is in the exploration stage.Wutong mountain is the only national natural scenic area in shenzhen,with a forest coverage rate of 88.6%,its forest vegetation constitutes an important ecological barrier in shenzhen.So it is known as the green lung of shenzhen.In addition,as the background forest of shenzhen city,the landscape effect of the ecological landscape forest of wutongshan scenic spot directly affects shenzhen city.The wutong mountain has abundant plant resources especially shown in some plants such as the Rhododendron moulmainense.its landscape is unique,its trees are graceful and colorful,it has high ornamental value,but natural distribution is relatively dispersed,natural competition is intense,landscape effect is not outstanding.Since 2006,The management office of wutongshan has carried out a series of measures including thinning,pruning,fertilizing,artificial assisted seedling regeneration,weeding and mowing,etc.Now,The landscape effect has been greatly improved in the small wutong and wanhua screen.Through file access,field reconnaissance to summarize the nursing measures for guide future work.Through the investigation of different density,pruning strength,fertilization and other treatment standards and compare and analyze the height,diameter,canopy and landscape evaluation of the Rhododendron moulmainense.In the end,determine the optimum technical index.The main results are as follows:When the upper tree is 200~300plants/hm~2,The Rhododendron moulmainense grows best.And by using analytic hierarchy process(AHP),landscape evaluation was conducted on the community of Rhododendron moulmainense in different density upper trees,and the landscape effect was higher than the other density when the upper tree was200~300 plants/hm~2;The smaller Rhododendron moulmainense density is,the smaller the intraspecific competition,and at the same time through the canopy coefficient method to get the density of wanhua screen shall be not less than 437 plants/hm~2,little wutong area shall be not less than 733 plants/hm~2;According to the investigation,there is a linear relationship between the upper tree canopy X and the clear height Y,i.e.,whenY=0.4794X-0.1432;After artificially promoting the natural regeneration,the forest condition of the forest was improved,and the illumination conditions in the forest were significantly enhanced.Through the comparison test,when the canopy density was 0.7-0.8,Rhododendron moulmainense seedlings could get enough light,the tree potential was gradually restored,and the seedlings grew rapidly;After fertilization,the growth of Rhododendron moulmainense was better than that of non-fertilization.The research results can be in a certain extent for Rhododendron moulmainense ecological landscape forest tending to provide theoretical basis and practical experience,and other ecological landscape forest construction to provide the reference for the future. |
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