[1]王媛韬,张 林*,沈 维,等.藏东南色季拉山林线过渡带生长季低温事件的海拔分布特征[J].山地学报,2017,(03):308-315.[doi:10.16089/j.cnki.1008-2786.000226]
 WANG Yuantao,ZHANG Lin,SHEN Wei,et al.Altitudinal Variations of Freezing Events at Timberline Ecotone in the Sergyemla Mountains, Southeast Tibet[J].Mountain Research,2017,(03):308-315.[doi:10.16089/j.cnki.1008-2786.000226]
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藏东南色季拉山林线过渡带生长季低温事件的海拔分布特征()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2017年03期
页码:
308-315
栏目:
山地环境
出版日期:
2017-05-30

文章信息/Info

Title:
Altitudinal Variations of Freezing Events at Timberline Ecotone in the Sergyemla Mountains, Southeast Tibet
文章编号:
1008-2786-(2017)3-308-08
作者:
王媛韬12张 林1*沈 维1刘新圣3罗天祥1
1.中国科学院青藏高原研究所 中国科学院高寒生态与生物多样性重点实验室,北京 100101;
2.中国科学院大学,北京 100049;
3.九江学院 旅游与国土资源学院,江西 九江 332005
Author(s):
WANG Yuantao12ZHANG Lin1SHEN Wei1LIU Xinsheng3LUO Tianxiang1
1.Key Laboratory of Alpine Ecology and Biodiversity, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101,China;
2.University of Chinese Academy of Sciences,Beijing 100049,China;
3.College of Tourism and Territorial Resources, Jiujiang 332005,China
关键词:
急尖长苞冷杉 日最低气温 频率 气候变化 生长季长度 幼苗
分类号:
Q948.1
DOI:
10.16089/j.cnki.1008-2786.000226
文献标志码:
A
摘要:
低温事件的加剧可能是限制高山林线向更高海拔爬升的一个关键原因,然而有关高海拔地区不同海拔、不同植被覆盖下的低温事件分布特征的研究十分缺乏。通过对西藏东南部色季拉山急尖长苞冷杉林线过渡带同一坡面不同海拔森林和灌丛冠层温度和土壤温度的监测,并基于冠层温度和土壤温度计算植物的生长季长度,分析生长季期间低温事件在不同海拔、不同植被的分异特征,得到如下结果:1.土壤温度定义的生长季比冠层温度定义的生长季滞后近一个月,且对于亚高山森林和林线,冠层温度定义的生长季长度明显大于土壤温度定义的生长季长度。2.无论以哪种方法定义生长季,期间出现的低温事件均表现为高山杜鹃灌丛>亚高山针叶林和林线,前者低温事件出现频率达后者的2~4倍,且总体而言高山杜鹃灌丛中低温事件的强度更大,持续时间相对更长。研究结果表明高山杜鹃灌丛存在更多的低温事件,而且随海拔增加,其频率、强度和持续时间不断加剧,这可能直接限制了乔木树种幼苗在林线之上低矮灌丛中的存活和生长,进而限制了林线乔木树种向更高海拔的分布。

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相似文献/References:

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 LIU Xinsheng,ZHANG Lin,et al.Altitudinal Variation in Aboveground Biomass of Abies georgei var. smithii at Timberline of the Sergyemla Mountains, Southeast Tibet[J].Mountain Research,2011,(03):362.
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备注/Memo

备注/Memo:
收稿日期(Received date):2015-11-25; 修回日期(Accepted date):2017-07-14。
基金项目(Foundation item):国家自然科学基金(41471039); 中国科学院战略性先导科技专项(XDA05050303); 中国科学院科技基础性工作专项(2015FY11030001); 中科院西部行动计划项目(KZCX2-XB3-08-02)。[National Natural Science Foundation of China(41471039)of CAS; Strategic Priority Research Program of the Chinese Academy of Sciences(XDA05050303); Basic Work of Science and Technology(2015FY11030001); the Action Plan for West Development of the CAS(KZCX2-XB3-08-02).]
作者简介(Biography):王媛韬(1991-),女(蒙古族),内蒙古人,硕士研究生,主要从事生态与植被遥感方面的研究。[Wang Yuantao(1991-),female(Mongol),Inner Mongolia,M.Sc.candidate,major in ecology and remote sensing of vegetation.] E-mail:wyuan1166@sina.com
*通讯作者(Corresponding author):张林(1979-),男,云南人,副研究员,主要从事植物生态学与气候变化方面的研究。[Zhang Lin(1979-),male,Yunnan province,associate professor,research on phytoecology and climate change.] E-mail: zhanglin@itpcas.ac.cn
更新日期/Last Update: 2017-05-30