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| 祁连山青海云杉林树线温度特征 | |
| 引用本文： | 胡启武,吴琴,张锋,宋明华,周才平,欧阳华,刘贤德.祁连山青海云杉林树线温度特征[J].干旱区地理,2009,32(5). |
| 作者姓名： | 胡启武 吴琴 张锋 宋明华 周才平 欧阳华 刘贤德 |
| 作者单位： | 1. 中国科学院地理科学与资源研究所,北京,100101;江西师范大学地理与环境学院,江西,南昌,330022 2. 江西师范大学地理与环境学院,江西,南昌,330022 3. 中国科学院地理科学与资源研究所,北京,100101 4. 祁连山水源涵养林研究院,甘肃,张掖,734000 |
| 基金项目： | 国家重点基础研究发展计划项目“青藏高原环境变化及其对全球变化的响应与适应对策”(2005CB422005) |
| 摘 要： | 树线温度对于解释树线位置及树线形成机理、预测树线对于气候变化的响应具有重要意义。通过在祁连山北坡青海云杉林郁闭林内、树线地带、高山灌丛分布带设置土壤温度自动观测仪器,初步分析了青海云杉林树线温度特征。结果表明:(1)树线处青海云杉根际土壤温度(10cm深度)生长季平均值为4.9℃,低于全球树线生长季平均土壤温度(6.7℃)。(2)生长季长度方面,青海云杉树线(104天)与亚北极(Subarctic,103天)、北方林(Boreal,106天)树线相近。(3)高山灌丛分布带在海拔上高于树线地带,但灌丛地带根际土壤生长季节均温(6.4℃),生长季长度(122天)均高于树线地带,显示了树线之上灌丛相对于乔木生活型有更佳的保持根际土壤热量的优势,从而也成为在树线之上灌丛能够很好生长,并且取代乔木的重要因素。 |
| 关 键 词： | 祁连山 青海云杉 树线温度 |
Treeline temperature of Picea crassifolia forest in Qilian Mountains |
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| HU Qiwu,wu Qin,ZHANG Feng,SONG Ming-hua,ZHOU Cai-ping,OUYANG Hua,LIU Xian-de.Treeline temperature of Picea crassifolia forest in Qilian Mountains[J].Arid Land Geography,2009,32(5). | |
| Authors: | HU Qiwu wu Qin ZHANG Feng SONG Ming-hua ZHOU Cai-ping OUYANG Hua LIU Xian-de |
| Institution: | HU Qi-wu~(1,2),WU Qin~2,ZHANG Feng~1,SONG Ming-hua~1,ZHOU Cai-ping~1,OUYANG-Hua~1,LIU Xian-de~3 (1 Institute of Geographical Sciences and Natural Resources Research,the Chinese Academy of Sciences,Beijing 100101,China,2 School of Geography and Environment,Jiangxi Normal University,Nanchang 330022,Jiangxi,3 Academy of Water Resources Conservation Forests in Qilian Mountains of Gansu Province,Zhangye 734000,Gansu,China) |
| Abstract: | Over the past one hundred years,treeline temperature has attracted great concerns.Most hypotheses on treeline formation were related to temperature.Since most of meteorological stations were far away from treelines, temperature extrapolated from data by meteorological stations would not reflect actual temperatures experienced by trees at treeline.Hence,a direct treeline temperature measurement was demanded.Recently,K? rner and Paulsen launched a worldwide treeline temperature investigation,suggesting that h... |
| Keywords: | Qilian Mountains Picea crassifolia Treeline temperature |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |