Responses of the seedlings of five dominant tree species in Changbai Mountain to soil water stress  

不同土壤水分条件对长白山阔叶红松林5种树种的生理生态特性的影响(英文)

作　　者：代力民[1] 李秋荣[2] 王淼[1] 姬兰柱[1] 

机构地区：[1]中国科学院沈阳应用生态研究所,沈阳110016 [2]南京军区总医院,南京210002

出　　处：《Journal of Forestry Research》2003年第3期191-196,共6页林业研究（英文版）

基　　金：national key basic develop-ment of China (G1999043407), grant from the National Natural Science Foundation of China (No. 30271068) and KZ-CX-SW-01-01B of the Chinese Academy of Sciences.

摘　　要：Soil water stress was studied on the potted seedlings of five dominant tree species (Pinus koraienes Sieb.et Zucc., Fraxinus mandshurica Rupr., Juglans mandshurica Maxim, Tilia amurensis Rupr. and Quercus mongolica Fisch.ex Turcz) from the broadleaved/Korean pine forest in Changbai Mountain. Leaf growth, water transpiration and photosynthesis were compared for each species under three soil moisture conditions: 85%-100% (high water, CK), 65%-85% (Medium water, MW) and 45%-65% (low water, LW) of 37.4% water-holding capacity in field. The results showed that the characteristic of typical drought-resistance of the leaves is significantly developed. The net photosynthetic rate and water use efficiency of Fraxinus mandshurica were higher in MW than those in CK. But for the other four species, the net photosynthetic rate and water use efficiency in CK were lower than those in MW and LW. The transpiration rate responding to soil moistures varied from species to species.Soil water stress was studied on the potted seedlings of five dominant tree species (Pinus koraienes Sieb.et Zucc., Fraxinus mandshurica Rupr., Juglans mandshurica Maxim, Tilia amurensis Rupr. and Quercus mongolica Fisch.ex Turcz) from the broadleaved/Korean pine forest in Changbai Mountain. Leaf growth, water transpiration and photosynthesis were compared for each species under three soil moisture conditions: 85%-100% (high water, CK), 65%-85% (Medium water, MW) and 45%-65% (low water, LW) of 37.4% water-holding capacity in field. The results showed that the characteristic of typical drought-resistance of the leaves is significantly developed. The net photosynthetic rate and water use efficiency of Fraxinus mandshurica were higher in MW than those in CK. But for the other four species, the net photosynthetic rate and water use ef-ficiency in CK were lower than those in MW and LW. The transpiration rate responding to soil moistures varied from species to species.

关 键 词：Water stress Net photosynthesis Transpiration rate Water use efficiency Broadleaf/Korean pine forest 

分 类 号：S791.24[农业科学—林木遗传育种]