| 新疆甘家湖梭梭林的光合、水分生理生态的研究 |
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| 引用本文： | 侯天侦,梁远强.新疆甘家湖梭梭林的光合、水分生理生态的研究[J].植物生态学报,1991,15(2):141-150. |
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| 作者姓名： | 侯天侦 梁远强 |
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| 作者单位： | 新疆林科院，新疆林科院 乌鲁木齐 830063，乌鲁木齐 830063 |
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| 摘 要： | 测定了梭梭林中梭梭柴等7个树种的光合和水分生理生态特性，包括其光合和呼吸强度、叶绿素含量、气孔状况、光合产物的分配及初级生产力、水分利用效率等，发现荒漠树种具有较高的光合效率和水分利用效率。6—9月梭梭柴的平均光合强度为8.02CO2mg／g，干重·h，它接近于中生树种新疆杨同期光合强度的平均值(8.39)；白梭梭的蒸腾系数为250.12mg水／g干重，约是新疆杨蒸腾系数(502.45)的一半。荒漠树种的高光合和水分利用效率是它们长期适应高温干旱生态环境的结果。荒漠梭梭林通常仅作为薪炭林，这对光合产物的利用是很不经济合理的，需要改进。
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| 关 键 词： | 梭梭林 光合作用 蒸腾系数 |
RESEARCH ON PHYSIOLOGICAL ECOLOGY OF PHOTOSYNTHESIS AND WATER RELATION OF SAXOUL FORESTS IN GUA JIA HU AREA OF XINJIANG |
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| Hou Tian-zhen Liang Yuan-qiang.RESEARCH ON PHYSIOLOGICAL ECOLOGY OF PHOTOSYNTHESIS AND WATER RELATION OF SAXOUL FORESTS IN GUA JIA HU AREA OF XINJIANG[J].Acta Phytoecologica Sinica,1991,15(2):141-150. |
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| Authors: | Hou Tian-zhen Liang Yuan-qiang |
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| Affiliation: | Xinjiang Academy of Forestry |
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| Abstract: | After determination of the physiological property of photosynthesis and water relation of seven species of Saxoul forests including their intensity of photosynthesis and respiration, chlorophyll conent, stoma status, distribution of photosynthetical outcome, primary productivity and utilization efficiency of water, etc. It was discovered that Eremophyte species have high efficiency of photosynthesis and water utilization. The average intensity of photosynthesis of Haloxylon ammodendron during June to September is 8.02 CO2·mg/g dry weight. Hour, close to the Populus bolleana (8.39) which is amesophytes. The transpiration coefficient of Haloxylon persicum (250.12mg water/g dry weight) is about the half of Populus bolleana (502.45). The high efficiency of photosynthesis and water utilization of Eremophyte may be attributed to long adaptation to the ecological environment of high temprature and aridity. Currently, Saxoul forests are only used as firewood by local residents, which is neither economical nor rationable and needs improvement. |
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| Keywords: | Saxoul forest Photosynthesis Transpiration coefficient |
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