| 干旱荒漠区银白杨树干液流动态 |
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| 引用本文： | 张俊,李晓飞,李建贵,王华,黄春堂,闵首军,李刚,张福海,田旭,孔军.干旱荒漠区银白杨树干液流动态[J].生态学报,2013,33(18):5655-5660. |
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| 作者姓名： | 张俊 李晓飞 李建贵 王华 黄春堂 闵首军 李刚 张福海 田旭 孔军 |
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| 作者单位： | 新疆农业大学林业研究所, 乌鲁木齐 830052;新疆油田公司白碱滩物业管理公司, 克拉玛依 834008;新疆农业大学林业研究所, 乌鲁木齐 830052;新疆油田公司造林减排作业区, 克拉玛依 834000;新疆油田公司造林减排作业区, 克拉玛依 834000;新疆油田公司造林减排作业区, 克拉玛依 834000;新疆油田公司造林减排作业区, 克拉玛依 834000;新疆油田公司造林减排作业区, 克拉玛依 834000;新疆油田公司造林减排作业区, 克拉玛依 834000;新疆油田公司造林减排作业区, 克拉玛依 834000 |
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| 基金项目： | 国家"十一五"科技支撑计划项目(2008BAD95B07);国家林业公益性行业科研专项项目(201004004) |
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| 摘 要： | 应用热扩散式树干茎流计(TDP)于2012年7月1日至7月25日,在克拉玛依地区农业开发区对银白杨(Populus alba L.×P.talassica)人工林树干液流速率进行了连续测定,并对气象、土壤水分等指标进行了同步测定。结果表明:7月份的晴天银白杨树干液流速率日变化呈单峰型,阴天呈多峰型,在测量时期液流速率日平均值为0.6059 L/h;银白杨树干单位边材面积的液流速率与太阳总辐射、大气温度、水汽压差呈极显著正相关关系,与相对湿度呈负相关关系。其相关系数绝对值顺序为太阳总辐射>大气温度>水汽压差>相对湿度>风速;银白杨边材面积与胸径之间存在着显著的线性相关关系,相关系数为0.834,单位边材面积的液流速率随树干胸径的增大而减小。
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| 关 键 词： | 气象因子 干旱荒漠区 银白杨 树干液流 |
| 收稿时间： | 5/6/2013 12:00:00 AM |
| 修稿时间： | 7/3/2013 12:00:00 AM |
Sap flow dynamics of Populus alba L.×P.talassica plantation in arid desert area |
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| ZHANG Jun,LI Xiaofei,LI Jiangui,WANG Hu,HUANG Chuntang,MIN Shoujun,LI Gang,ZHANG Fuhai,TIAN Xu and KONG Jun.Sap flow dynamics of Populus alba L.×P.talassica plantation in arid desert area[J].Acta Ecologica Sinica,2013,33(18):5655-5660. |
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| Authors: | ZHANG Jun LI Xiaofei LI Jiangui WANG Hu HUANG Chuntang MIN Shoujun LI Gang ZHANG Fuhai TIAN Xu and KONG Jun |
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| Institution: | Institute of Forestry, Xinjiang Agriculture University, Urumqi 830052, China;The Business and Management Company of Baijiantan, The Oilfield Company of Xinjiang, Karamay 834008, China;Institute of Forestry, Xinjiang Agriculture University, Urumqi 830052, China;Operation Area of Afforestation and Emission Reduction, The Oilfield Company of Xinjiang, Karamay 834000, China;Operation Area of Afforestation and Emission Reduction, The Oilfield Company of Xinjiang, Karamay 834000, China;Operation Area of Afforestation and Emission Reduction, The Oilfield Company of Xinjiang, Karamay 834000, China;Operation Area of Afforestation and Emission Reduction, The Oilfield Company of Xinjiang, Karamay 834000, China;Operation Area of Afforestation and Emission Reduction, The Oilfield Company of Xinjiang, Karamay 834000, China;Operation Area of Afforestation and Emission Reduction, The Oilfield Company of Xinjiang, Karamay 834000, China;Operation Area of Afforestation and Emission Reduction, The Oilfield Company of Xinjiang, Karamay 834000, China |
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| Abstract: | A thermal dissipation probe (TDP) was used to measure the sap flow dynamics of Populus alba L.×P.talassica in the agricultural development zones of Karamay during July 1-25, 2012.Soil mositure, total radiation (TR), air temperature, relative humidity, water vapor pressure deficit (VPD) and wind speed were measured at the same time.The results showed that: Diurnal variation of the sap flow displayed a single peaked curve on sunny days, while it displayed a multi-peaked curves on cloudy days.The average value of sap flow was 0.6059 L/h.Sap flow velocity per unit sapwood area was significantly correlated with TR, air temperature, and VPD and was negatively correlated with atmospheric relative humidity.The ranking of correlation coefficients was TR>air temperature>VPD>relative humidity>wind speed.Sapwood area and diameter at breast height (DBH) were significantly correlated (r=0.834), and the sap-flow velocity per unit sapwood area decreased with increasing stem diameter at breast height (DBH). |
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| Keywords: | climatic factors arid desert area Populus alba L ×P talassica sap flow |
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