摘要
本文采用热平衡法对河套灌区林龄相同、林带布设方式相同的两种杨树防护林林网内外的土壤日蒸发量进行平行观测,探讨两种防护林减少土壤蒸发的差异性。结论为:小美旱杨防护林在减少林网内空气温度、增大空气湿度、减小近地表风速等方面均优于同龄的新疆杨防护林,使小美旱杨防护林减少土壤蒸发作用优于新疆杨防护林。
The soil evaporation with two kinds of poplar shelterbelts was studied by thermal equilibrium method, and the difference .of evaporation reducing function of two kinds of shelterbelts was studied. The results showed that the function of sbelterbelts of Populus stmonii × （ Populus pyramidalis ＋ Salix matsudana ） cv. Poplarls is superior to that of Populus alba L. var. Pyramidalis in reducing air temporature, increasing air humidity and reducing wind speed at the same age. So, the function of shelterbelts of Populus simonii × （ Populus pyramidalis ＋ Salix matsudana） cv. Poplarls is superior to that of the shelterbelts of Populus alba L. var. Pyramidalis in reducing soil evaporation.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
2006年第4期62-67,共6页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
"十五"内蒙古科技攻关项目(20020705)
关键词
农田防护林
小美早杨
新疆杨
土壤蒸发
Shelterbelt
Populus simonii × （ Populus pyramidalis ＋ Salix matsudana ） ev. P oplaris
Populus alba L. vat. Pyramidalis
soil evaporation
