详细信息
六盘山北侧生长季内华北落叶松树干液流速率研究 被引量:9
Stem Sap Flux Velocity of Individual Trees of Larix principi-rupprechtii in Rainy Season in the North of Liupan Mountain
文献类型:期刊文献
中文题名:六盘山北侧生长季内华北落叶松树干液流速率研究
英文题名:Stem Sap Flux Velocity of Individual Trees of Larix principi-rupprechtii in Rainy Season in the North of Liupan Mountain
作者:刘建立[1] 王彦辉[1] 管伟[2] 熊伟[1] 于澎涛[1] 程丽莉[3]
第一作者:刘建立
机构:[1]中国林业科学研究院森林生态环境与保护研究所,北京100091;[2]中国林业科学研究院热带林业研究所,广州510520;[3]北京市农林科学院林果所,北京100093
年份:2008
卷号:27
期号:3
起止页码:434-440
中文期刊名:华中农业大学学报
外文期刊名:Journal of Huazhong Agricultural University(Natural Science Edition)
收录:CSTPCD;;北大核心:【北大核心2004】;CSCD:【CSCD2011_2012】;
基金:国家重点基础研究发展规划项目(2002CB111501);国家自然科学基金重点项目(30230290);国家林业局引进国际先进技术项目(2003-4-43);科技部社会公益研究专项(2004DIB3J102);国家林业局森林生态环境重点实验室联合资助
语种:中文
中文关键词:六盘山;华北落叶松;环境因子;液流速率
外文关键词:Liupan Mountain; Larix principi-rupprechtii; meteorological factors; sap flux velocity
分类号:S791.220.1
摘要:2006年5~10月在宁夏六盘山北侧叠叠沟林场,运用德国Ecomatik公司生产的SF-L树干液流仪研究了9株华北落叶松的树干液流变化过程及其对环境因子(气象条件、土壤水分)的响应。结果表明:华北落叶松的树干液流昼夜变化明显,呈不太典型双峰型曲线,晴天变化幅度大(0.087~0.348 cm/min),阴天变化幅度小(0.087~0.281 cm/min)。树干液流速率在生长季内呈现逐渐降低的趋势。对环境因子影响树干液流速率的偏相关分析表明:日液流速率(SFV)与太阳辐射(ESR)、土壤水分(Ps)各影响因子均存在显著正相关,而与温度因子(Tamean)的相关系数较低。经回归分析,建立了日液流速率与各环境因子的线性回归模型:SFV=0.106+0.000 141Ps+0.002 14ESR+0.002 18Tamean-0.000 43P(R=0.883)。
The sap flux velocity and its response to the meteorological factors of nine sample trees were studied by heat dissipation probe technique from May to November in 2006. The study site was in the Diediegou watershed,which is located on the north of Liupan Mountain, Ningxia Hui Autonomous Region. After one yearrs study, the results indicated that the stem sap flow velocity (SFV) of Larix principirupprechtii changed obviously between day and night with a single peak type curve. Variation amplitude was bigger in sunshine day (0. 087-0. 348 cm/min) and smaller in cloudy days (0. 087- 0. 281 cm/min) ; The sap flow velocity started at 6 : 00-8 : 00, and ascended to the peak during 12 : 00-13:00, then began to decrease at 19:00 and slowly decreased from 20:00-23:00. It arrived at the lowest point at the time before the sun rises next day. Combined with the Partial Correlation Analysis, the solar radiation(ESR), the moisture(Ps), the temperature(T amean) could be selected to establish the linear model. Their regression equation was. SFV=0. 106+0. 000 141 Ps+0. 002 14 ESR+0. 002 18 T emean 0.000 43 P(R=0. 883).
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