银杏复合系统小气候日变化特征  

Daily variation of microclimate in different Ginkgo biloba agroforestry systems

作　　者：程鹏[1] 陈雷[1] 曹福亮[1] 

机构地区：[1]南京林业大学森林资源与环境学院,南京210037

出　　处：《林业科技开发》2010年第3期78-80,共3页China Forestry Science and Technology

基　　金："十一五"国家科技支撑计划"特种工业原料林培育技术"(编号:2006BAD18B03);江苏省科技支撑计划"银杏高效复合经营系统效应及构建技术研究"(编号:BE2008395)

摘　　要：对5种不同银杏复合经营模式中林内小气候日变化进行了观测,结果表明:(1)光照强度、林内温度和土壤表层温度随着林分的郁闭程度和林分年龄的增加而下降,而林内相对湿度却相对上升;(2)银杏复合经营与纯种农作物相比,小气候效应明显,而与纯林相比相差不大;(3)影响小气候的主导因子是光照强度和林内温度;(4)在5种模式中,15年生的银杏果用园+桑树模式具有更为稳定和适宜的小气候特征。The daily variation of microclimate was measured in five Ginkgo biloba agroforestry systems. The results showed that the light intensity, air temperature and soil surface layer temperature were increased with the increase of canopy closure and the stand ages, while the air relative humidity was decreased. The microclimatie effects in the G. biloba agroforestry systems were more obvious than that in the crop systems, but almost same as in the pure G. biloba forest. The main factors induced the microclimatic characteristics were the light intensity and the air temperature in the stands. The system of G. biloba （15-year-old） ＋ Morus had greater stability in microclimatic characteristics than the other four systems.

关 键 词：银杏 复合经营 小气候 特征 

分 类 号：S792.160.2[农业科学—林木遗传育种]