Recovery Succession And Monitoring By 3S Techniques Of Kobresia Humilis Alpine Meadow Along Roads Under Trampling Disturbance In Na'qu County, Tibet

The recovering succession and monitoring of degenerated rangeland are important to rehabilitate and sustainable development of grassland ecosystem in pastoral area. The rangeland was damaged hardly by vehicle trampling in north Tibet, and the Kobrisia humulis alpine is one of the main grassland in the district. It was studied in the article that the recovery succession of Kobrisia humulis alpine after tramping disturbance, which supporting the reestablishment of rangeland in theory and technique. The monitoring method was studied for grassland degradation using 3S techniques, which improves the methods for grassland degradation monitoring by using remote sensing.The plant components and plant diversity were analysis firstly in recovering succession of degenerated Kobressia humulis alpine; then the community characteristics, biomass underground and up ground were analysis; then the soil quality was comprehensively evaluated including physics and chemises; then the plant diversity model in eco-space was established, which distribution characteristics and the maintain mechanism of plant diversity were analyzed. Then, with the support of GIS space overlapping analysis technique, study on dynamic monitoring of grassland degradation is conducted by means of post-assessment comparison. Last, driving factors of grassland succession were analyzed by adoption of qualitative and quantitative methods, and a sustainable development pattern of forage industry was suggested based on the external conditions of study area. There are some conclusions as follows:...