摘要
为了集约经营泡桐人工林,实施有效的水分管理,本文对泡桐人工林采用生态定位观测和系统分析的方法进行水量平衡的研究。建立了3个子系统的动态数学模型,综合了泡桐林生态系统的整体数学模型。研究结果表明;5月10日到10月30日泡桐人工林生态系统的蒸散输出大于降雨输入。蒸散受综合因子影响而变化,从而使水量平衡的各分量不断地变化着。从5月10日起,蒸散量逐渐增大,到7月下旬、8月上旬达最大,以后逐渐减少。降水输入在7、8、9三个月较大。本文建立的数学模型适于半干旱地区,密度为6×10m的泡桐人工林,对不同树龄、土质的泡桐林只起参考作用。
The test was carried out on the water balance of Paulownia plantation with the methods of ecological location observation and system analysis to bring about intensive management and effectual water administration. On the basis of mathematical models of three subsystems——Paulownia tree, understorey vegetation and the root zone of soil, the total mathema tical models of man—made Paulownia forest ecosystem was synthesized. The models presented in this paper are suitable for the Paulownia plantation with the density of 6×10 meter in medium drought areas, playing a reference role in different soil texture and different age Paulownia plantation.
出处
《河南农业大学学报》
CAS
CSCD
1991年第1期103-116,共14页
Journal of Henan Agricultural University
关键词
泡桐
人工林
生态系统
水量平衡
Paulownia plantation
ecosystem
water balance
mathematical models
