青海省东部地区地处黄土高原向青藏高原的过渡地带,是全省社会经济相对发达和人口密集的地区,由于地理条件的限制,加之长期历史原因和人为破坏因素。生态环境变得非常脆弱,水土流失相当严重。近年来,党和国家十分重视生态环境建设,大力实施“三北”防护林、天然林保护、重点生 The eastern part of Qinghai Province is located in the transitional zone from the Loess Plateau to the Qinghai-Tibet Plateau. It is a relatively developed and densely populated area in the province. Due to the restriction of geographical conditions, coupled with long-term historical reasons and human destructive factors. The ecological environment has become very fragile, soil erosion is quite serious. In recent years, the party and the state attach great importance to the construction of the ecological environment and vigorously implement the “Three Norths” shelterbelt, natural forest protection and key students