| Responses of the seedlings of five dominant tree species in Changbai Mountain to soil water stress |
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| 作者姓名： | DAILi-min LIQiu-rong WANGMiao dlLan-zhu |
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| 作者单位： | [1]InstituteofAppfiedEcology,theChineseAcademyofSciences,Shenyang110016,P.R.China [2]GeneralHospitalofNanjingMilitaryDistrict,Nanjing210002,P.R.China |
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| 基金项目： | 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. |
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| 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 soecies.
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| 关 键 词： | 长白山 阔叶红松林 树种 生理特性 生态特性 土壤水分 水分胁迫 光合速率 蒸腾速率 水分利用率 |
| 收稿时间： | 24 April 2002 |
Responses of the seedlings of five dominant tree species in Changbai Mountain to soil water stress |
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| DAILi-min LIQiu-rong WANGMiao dlLan-zhu.Responses of the seedlings of five dominant tree species in Changbai Mountain to soil water stress[J].Journal of Forestry Research,2003,14(3):191-196. |
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| Authors: | Dai Li-min Li Qiu-rong Wang Miao Ji Lan-zhu |
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| Institution: | (1) Institute of Applied Ecology, the Chinese Academy of Sciences, 110016 Shenyang, P. R. China;(2) General Hospital of Nanjing Military District, 210002 Nanjing, P. R. China |
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| Abstract: | 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. |
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| Keywords: | Water stress Net photosynthesis Transpiration rate Water use efficiency Broadleaf/Korean pine forest |
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