<正>研究了岷江冷杉林、川滇高山栎林及灌竹林等3种典型亚高山森林群落的林冠截留、穿透雨和径流的月动态变化，分析了林冠截留量、穿透雨量与总降雨量的数量关系。结果表明：川滇高山栎林、灌竹林、岷江冷杉林林冠平均截留量分别为278.2，362.1和353.7mm；林冠平均截留率分别占降雨量的35.77%，46.55%和45.47%。岷江冷杉林径流量为5.9mm，仅占降雨量的0.76%。3种群落穿透雨量分别占降雨量的53.77%，53.45%和64.23%。另外，建立了3种群落类型的穿透雨量、林冠截留量与大气降雨量之间的回归模型，用于定量评价该地区亚高山森林的生态水文效应。

The paper deals with Cerasus cultivars resources of Wuxi City, Jiangsu Province. According to their evolutional relation, the author have got clear knowledge about Cerasus cultivars and made a considerable classification system. Ten species and 21 cultivars were founded. Three new cultivars were recorded. The morphological characters of them were described firstly. The correct scientific names were given by ICNCP. The key for all cultivars was worked out.