The Sensitivity of Different Vegetations in Liupan Ecololgical Tourist Sites to Tourist Activities
The carrying capacity of ecological system is a core problem for the land management, because there is a obvious conflict between tourism activities and natural environment. Three typical vegetations, which are edelweiss meadow in Liangdianxia, larch in Yehegu and ?? in Xiaonanchuan, are selected in this paper, since these are the core tourism areas in Liupan Mountain Reserve. Tourism activities simulation is conducted from the sprout period in spring (in May) to the period with maximum biomass (in August) to study the dynamical responses of the three vegetation types. Experimental treading is conducted upon the three vegetation types in five separate mountain regions. Each type is tread upon for 0-500 times. Vegetation responses to the treading are assessed by evaluating the vegetation cover 2 weeks after and three months after the treading tests. Based on the changes of vegetation cover in the different stages, the sensitivity of three vegetations to the tourist activities can be evaluated by three indices, which are the tolerance index, the resistance index and the elasticity index. The results of this study show that: 1) In terms of relative sensitivity, all the sensitivity indices respond consistently. The sensitivity level ranking of the three vegetations is: Liangdianxia ranks first and Xiaonanchuan is the last. However, vegetation in Xiaonanchuan is especially sensitive to human treading. 2) In terms of absolute sensitivity, the species in the three regions have different vegetation level and therefore, the sensitivity level is different too. The sensitivity level in Xiaonanchuan ranks first, because nearly 6 species disappear in the treading test period. The number of disappeared species in the Yehegu is 5 and in Liangdianxia, it is 2. The disappeared species in the three regions are mainly Baccatae, Agrimonia L. baby, Prunus padu, Agrimonia pilosa Ledeb of Rosaceae and Vicia sepium Linn of Leguminosae. Also, the coverage rate of some other species reduces due to the treading. These results are useful for the tourism management in Liupan Mountain reserve. Frequent tourist activities can destroy the sprouts of plants and can directly impact the evolution of the species.
Liupan MountainSensitivityResistance indexTolerance indexElasticity index
NETL
NSTL
万方数据
维普
