Changes Of The Aesthetic Value Of Grassland Scenics And Its Influened Factors Under Tourism Disturbance In Kanas Scenic Area

The evaluation of the aesthetic value of grassland scenics is the premise of tourism development. Therefore, in this paper, Kanas mountain meadow as the research object, the 12 core grassland scenic spots in accordance with the intensity of different tourism disturbance is divided into 4 levels, using aesthetic value evaluation method to determine the aesthetic value. Based on the field survey, the vegetation and soil samples for analysis of stoichiometry. In order to explore the factors affecting the grassland landscape in Kanas. The results are as follows:(1) From the tourism disturbance on grassland community; in the process of tourism disturbance from weak to strong, community structure tended to be simple, its plant height, coverage, biomass showed a downward trend; with the plant gradually become dominant species, to replace the original tall, sexual reproduction of plants; Shannon Wiener index(Shannon Wiener index, H), Margalef richness index(Margalef index, P) showed a trend of gradual decline; and Simpson index(Simpson index, d), Pielou evenness index(Pielou index, e) by the tourism disturbance differences do not. After the vegetation system is degraded by tourism disturbance, the soil system also has a series of changes. Specific changes now all levels of soil moisture content with the tourism disturbance reduced from weak to strong, and the soil bulk density and compaction showed increasing trend.(2) From the point of view of community characteristics and grassland landscape aesthetic value relationship; moderate Tourism under the disturbance of the grassland biome quantity, coverage, density and alpha diversity index center, but grassland landscape beauty scores highest; mild under tourism disturbance on community biomass, coverage, density and alpha diversity index higher, grassland landscape beauty scores of times; severe tourism disturbance and extreme under tourism disturbance on community biomass, coverage, density and alpha diversity index is low, grassland landscape beauty score is low. Tall plants, sexual reproduction(long flowering period, the flowers of grassland plant more by tourists favor, Kanas grassland landscape visual quality depends on the combined effect of the four structure elements available "scenic beauty values =-0.137+0.427 H +0.248 * P"(R2=0.894, P < 0.05), "beauty value =0.021+0.032 X and perennial forbs species important value-0.037 x a, biennial weed importance value"(R2 = 0.796, P < 0.05) of the two models were analyzed.(3) From the ecological stoichiometry of grassland landscape aesthetic value influence, Kanas Scenic mountain meadow communities there are kinds of organic carbon(organic carbon; c), total nitrogen(n, n), total phosphorus(total phosphorus(, P) content were with intensification of the grassland degradation and reduce and aesthetic value decreases. The content of C, N and P in soil affected the content of C, N and P in plants, which showed a significant linear positive correlation. The ecological stoichiometry characteristics of Kanas mountain meadow plants were controlled by the two factors of species and soil. From the effect of chlorophyll content on the aesthetic value, the chlorophyll content and the aesthetic value of the grassland landscape in the region I, II, III are very significantly positive correlation, the correlation is not significant. Chlorophyll content is an important factor affecting the aesthetic value of grassland landscape.