Evaluation Of In-forest Landscape Of Scenic Recreational Bamboo Forest

Under the background of health and mass tourism,forest health tourism has become a new pillar industry of forestry development in China.It plays an important role in promoting the implementation of the strategy of rural revitalization.Bamboo forest is an important material resource and spiritual wealth in China,and it is an excellent carrier for the development of forest recreational tourism.However,the lack of relevant theoretical research restricts the comprehensive development and utilization of bamboo forest resources.Based on the current situation of scenic spots of scenic recreational bamboo forest in southwest China and the study on in-forest landscape evaluation,this study constructed an evaluation index system of landscape recreational bamboo forest,which includes five criterion layers,20 indicators and 63 categories,using the analytic hierarchy process,and the quality of landscape in six bamboo forests was scored by using the index system.Subsequently,the relaxation effects of six bamboo forest landscapes on human physiology and psychology were measured and analyzed by human physiological and psychological tests.By comparing the consistency of scoring and physi-psychological relaxation effects,the scientificity of the evaluation index system is further verified.Among the five criteria layers of the evaluation index system,one index with large weight and easy to control in production practice is selected(visibility,lodging bamboo,living bamboo density,underforest neatness,height under branch).The relationship between five index categories and scenic beauty in bamboo forest was analyzed by scenic beauty estimation method.Finally,the paper also puts forward some strategies for landscape improvement and upgrading in bamboo forests.The specific conclusions are as follows:(1)Established a in-forest landscape evaluation index system for scenic recreational bamboo forest.The order of weight values of the five criterion-level indicators is as follows:Forestry Aesthetic Index(0.2864)>Bamboo Forest Health Index(0.2442)>Stand structure index(0.1769)>Under-forest characteristic index(0.1663)>Tree measurement index(0.1262);Six bamboo forest landscapes were scored by the evaluation index system.The quality ranking of bamboo forest landscape is as follows:Ⅳ-Ci bamboo forest in Xinjin,Chengdu(42.15 points)>Ⅴ-Ma bamboo forest in Renshou,Meishan(37.76 points)>Ⅵ-Mao bamboo forest in Changning,Yibin(36.34 points)>Ⅲ-Ci bamboo forest in Chongzhou,Chengdu(34.34 points)>Ⅱ-Lei bamboo forest in Tongmagou,Chengdu(33.54points)>Ⅰ-Lei bamboo forest in Zhuhai Cave,Chengdu(23.47 points).(2)After viewing the six bamboo forest landscapes,the subjects’high beta brain waves,low beta brain waves,blood pressure and pulse values decreased,skin resistance increased,negative emotions decreased and positive emotions increased,which indicated that different bamboo forest landscapes could relax people’s physiology and psychology.From the comprehensive relaxation effect of human physiology and psychology,the order of six bamboo forest landscapes was as follows:Ⅳ-Ci bamboo forest in Xinjin,Chengdu(5.6899)>Ⅴ-Ma bamboo forest in Renshou,Meishan(5.6095)>Ⅵ-Mao bamboo forest in Changning,Yibin(5.4364)>Ⅲ-Ci bamboo forest in Chongzhou,Chengdu(4.9022)>Ⅱ-Lei bamboo forest in Tongmagou,Chengdu(4.7642)>Ⅰ-Lei bamboo forest in Zhuhai Cave,Chengdu(4.0097).This is consistent with the landscape quality ranking obtained by using the evaluation index system constructed in this paper,which verifies the scientificity of the evaluation index system of in-forest landscape of scenic recreational bamboo forest.(3)Through the analysis of the relationship between the different categories of the five indicators and scenic beauty in mao bamboo forest,we can see that the landscape beauty of bamboo forest increased with the increase of visibility,neatness of understory layer and average height under branches,and decreased with the increase of lodging degree.With the increase of stand bamboo density,it showed a trend of first increasing and then decreasing.Therefore,the strategies of landscape upgrading in bamboo forests are put forward.The density of bamboo remained at a moderate level(scattered large-diameter bamboo 4000～6000 plants/hm~2;scattered medium-diameter bamboo 8000～12000plants/hm~2;cluster larg-diameter bamboo 10000～15000 plants/hm~2;cluster medium-diameter bamboo 20000～30000 plants/hm~2);raise the branches to a height of 5.5m or more;improve accessibility within the forest(>20m);keep the understory clean.In addition,it is possible to enhance the color richness and brightness of the forest while improving the life form of the bamboo forest by enriching the understory irrigation structure.