雁北沙地樟子松、油松和小叶杨生长规律及蒸腾特性研究  

Study on Growth and Transpiration of Pinus Sylvestris var.Mongolica,Pinus Tabulaeformis and Populus Simonii in North Shanxi Province

作　　者：胡振华[1] 王电龙[1] 呼起跃[2] 

机构地区：[1]山西农业大学林学院,山西太谷030801 [2]山西省水利厅水保局,山西太原030002

出　　处：《山西农业大学学报（自然科学版）》2007年第3期245-249,共5页Journal of Shanxi Agricultural University(Natural Science Edition)

基　　金：山西省青年科技研究基金项目(20031048)

摘　　要：樟子松、油松及小叶杨为山西省雁北地区防风固沙的主要造林树种。针对三种树种在幼林、中幼林阶段的生长情况、树木蒸腾等进行了对比研究,研究表明:樟子松自引种到我省雁北地区以来,中幼林阶段的胸径、树高等各项生长指标都远远超过了乡土树种油松及小叶杨,而且蒸腾强度较弱,7月单株月白昼耗水量为4 370.66 kg,是雁北地区造林的理想树种之一;油松7月单株月白昼耗水量为2 868.08 kg,是三个树种中蒸腾强度最弱的;小叶杨7月单株月白昼耗水量为6 259.76 kg,蒸腾强度最大。从研究结果看,樟子松和油松均为低耗水、生长状况较为理想的树种,而小叶杨需水量大,后期生长极差,应为次选树种。Pinus sylvestris vat. mongolica, Pinus tabulaeformis and populus simonii are main tree species to defend wind and sand in north Shanxi province. The paper studied the growing indices and the transpiration rate of these three kinds of trees. The results show that Pinus sylvestris vat. mongolica is growing and developing regularly in north Shanxi province and is better than Pinus tabulaeformis and Populus simonli, and its transpiration rate is weak, its drought-resistance is strong, so it is one of the best tree species in north Shanxi province. Pinus tabulaeformis has the characteristic of broad accommodation, stronger resistance, weaker transpiration rate, stronger drought-resistance, it is also one of the important tree species of north Shanxi province. Poplus simonii is a tree species which likes sunlight and humid climate, it is hard to adapt to bad environment of north Shanxi province, so its value is very low and named ＂ small old tree＂. Because of the obvious difference of these three kinds of trees, they have very big differences in defending wind and sand and in improving the environment, so it is very important to study the characteristics of these three kinds of trees, this will contribute to selecting trees species according to the living conditions and improving the ecological environment completely in North Shanxi Province.

关 键 词：生长状况 蒸腾强度 抗旱性 

分 类 号：S756.5[农业科学—森林经理学]