Seed rain and viable soil seed bank of 'black soil land'degraded alpine meadow in Qinghai‐ Tibetan Plateau

摘要

Seed rain and soil seed bank are important to restore degraded vegetation (Du et al, 2007)..Black‐soil‐land. Resulting from extreme degraded alpine meadow accounts for about 30% of total alpine grassland in Qinghai‐Tibetan Plateau.However, at present, there are no reports about seed rain and soil seed bank in.black soil land.degraded alpine meadow (Shang & Long, 2007).In order to understand the restoration function of seed rain and soil seed bank in.black soil land., the goal of this study is to dertermine quantity and composite of seed rain and soil seed bank of.black soil land..