Effects of human activities on organic carbon storage in the Kobresia hummilis meadow ecosystem on the Tibetan Plateau Regional characteristics of the alpine meadow degradation succession on the Qinghai-Tibetan Plateau Analysis on the distribution and degraded succession of plant communities at lower reaches of Tarim River Toxic effects of ent-kaurane diterpenoids on soil ciliate communities Studies on Some Structural Characteristics of a Community of Mixed Pasture During the Degradation Succession Process Study on Physiology/Ecology Adaptation of Main Plant in Degraded Seriphidium transiliense Desert Rangeland