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| 西南亚高山3种典型森林的小气候特征 | |
| 引用本文： | 朱育旗,王德荣,蒲永波,李兴红,蒋勇,李德文,金贵成.西南亚高山3种典型森林的小气候特征[J].四川林业科技,2009,30(6):12-20. |
| 作者姓名： | 朱育旗 王德荣 蒲永波 李兴红 蒋勇 李德文 金贵成 |
| 作者单位： | 1. 长江造林局川南分局,四川,纳溪,646300 2. 冕宁县林业局,四川,冕宁,615600 3. 四川省林业调查规划院,四川,成都,610081 4. 平武县林业局,四川,平武,622550 |
| 基金项目： | 四川省王朗国家级自然保护区各级领导和员工的大力支持 |
| 摘 要： | 为阐明以白桦（Betulaplatyphylla）、岷江冷杉（Abieefaxonianan）、紫果云杉（Piceapurpurea）为优势种的典型川西亚高山森林小气候特征，利用3套全自动小气候仪连续测定了3个生长季节（2002～2004年的5月～10月）的小气候变量。结果表明：1）白桦林（BF）、岷江冷杉林（vr）和紫果云杉林（SF）内的太阳辐射日进程、日总量和月总量差异显著；2）生长季节内，BF、sF和FF林内的太阳辐射总量分别占林外太阳辐射总量的47．66（±9．08）％、20．65（±1．74）％和11．42（±4．01）％；3）BF、SF和FF林内空气温度和土壤温度的日进程、日平均和月平均值差异显著；4）BF、SF和FF林内的日平均空气温度和土壤温度与林冠下太阳辐射日积累量没有显著的线性关系；5）BF、FF和SF林内空气温度与土壤温度以及土壤不同层次温度之间有显著的线性关系；6）生长季节内（总184d），BF、FF和SF内的空气日平均温度〉14．0℃的天数分别为150d、148d和125d，林下土壤5cm的日平均温度≥4．0℃的天数分别为184d、184d和151d，而土壤15cm的日平均温度≥4．0℃的天数分别为184d、184d和145d。 |
| 关 键 词： | 小气候 白桦林 岷江冷杉林 紫果云杉林 亚高山 |
Characteristics of Microclimate within Three Typical Subalpine Forests in Southwestern China |
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| ZHU Yu-qi,WANG De-rong,PU Yong-bo,LI Xing-hong,JIANG Yong,LI De-wen,JIN Gui-cheng.Characteristics of Microclimate within Three Typical Subalpine Forests in Southwestern China[J].Journal of Sichuan Forestry Science and Technology,2009,30(6):12-20. | |
| Authors: | ZHU Yu-qi WANG De-rong PU Yong-bo LI Xing-hong JIANG Yong LI De-wen JIN Gui-cheng |
| Institution: | ZHU Yu-qi WANG De-rong PU Yong-bo LI Xing- hong JIANG Yong LI De-wen JIN Gui-cheng (1. The Chuannan Branch of Forestation Bureau of the Yangzte River,Naxi 646300;2. Forestry Bureau of Mianning County,Mianning 615600; 3. Siehuan Forest Inventory and Plan Institute,Chengdu 610081 ; 4. Forestry Bureau of Pingwu County,Pingwu 622550,China) |
| Abstract: | Solar radiation,air temperature, air relative humidity and soil temperature of 5 cm and 15 cm deep soil layers within the typical subalpine forests,including Betula platyphylla （2 540 m a. s. 1. ） ,Abies faxoniana （2 600 m a. s. 1. ） and Picea purpurea （2 920 m a. s. 1. ） forests located at Wanglang National Nature Reserve （ 103° 55′ - 104° 10′E, 32°49′ - 33 °02′N） in southwestern China, were continuously monitored in situ for three growing seasons （ May to October） by using automatic weather stations which provided 15 min microclimate data. The daily course of solar radiation, and the total radiation amounts of a day and a month were markedly different under the B. platyphylla, A. faxoniana and P. purpurea forest canopies. All the growing season, the total radiation amounts under B. platyphylla, A. faxoniana and P. purpurea forest canopies were only 47.66 （ ±9.08）% ,20. 65 （ ± 1.74）% and 11.42 （ ±4. 01 ）% of the total radiation at open site, respectively. Daily course, daily and monthly mean temperatures of different soil layers were markedly different within the B. platyphylla, A. faxoniana, and P. purpurea forests. There was no significant linear correlation between daily mean air temperature, soil temperature and total radiation of a day. The linear correlation between daily mean air temperature and soil temperature, and between the mean temperature of 5 cm deep soil layer and soil mean temperature of 15 cm deep soil layer, were markedly significant. In the growing season （ totalling 184 days）, the total days of daily mean air temperature above 4. 0℃ under B. platyphylla, A. faxoniana and P. purpurea forest canopies were 150, 148 and 125. The total days of daily mean temperature above 4. 0℃ of 5 cm deep soil layer were 184,184 and 151 ,and the total days of temperature above 4. 0℃ of 15 cm deep soil layer were 184,184 and 145 under B. platyphylla ,A. faxoniana and P. purpurea forest canopies. |
| Keywords: | Microchamte Betula platyphylla forest Abies faxoniana forest Picea purpurea forest Subal- pine |
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