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Flowering phenology of tree rhododendron along an elevation gradient in two sites in the Eastern Himalayas
Ranjitkar, Sailesh1,2; Luedeling, Eike3; Shrestha, Krishna Kumar4; Guan, Kaiyun5; Xu, Jianchu1,6
2013-03-01
Source PublicationINTERNATIONAL JOURNAL OF BIOMETEOROLOGY
Volume57Issue:2Pages:225-240
AbstractFlowering phenology of tree rhododendron (Rhododendron arboreum Sm.) was monitored in situ along elevation gradients in two distinct ecological settings. Observations were carried out in Gaoligong Nature Reserve (GNR) in China and in the Kanchenjunga Conservation Area (KCA) in Nepal. Using the crown density method, flowering events of the selected species were recorded. Flowering duration and synchrony were determined within each site and along the elevation gradient in each study area. Our observations showed high synchrony throughout the elevation gradient, especially for peak flowering. Mean 15-day soil temperature, soil parameters (soil moisture, nitrogen, organic matter and pH), age of the observed trees, and site characteristics (litter cover, canopy cover, inclination) were related to mean initial and peak flowering dates using partial least squares regression (PLS). Results differed between the two sites, but winter temperature was the most important variable affecting the regression model for both initial flowering and peak flowering at both sites. After temperature, soil moisture was the most important variable for explaining initial flowering dates. The distribution of tree rhododendron indicates that it is able to grow in a wide range of habitats with different environmental conditions. The recent trend of rising winter-spring temperature and the detected bloom-advancing effect of high temperatures during this period suggest that tree rhododendron might expand its distributional range in response to global warming.
KeywordRhododendron Arboreum Initial Flowering Partial Least Squares (Pls) Winter Warming Soil Moisture Early Flowering
Indexed BySCI
Language英语
WOS Research AreaBiophysics ; Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Physiology
WOS SubjectBiophysics ; Environmental Sciences ; Meteorology & Atmospheric Sciences ; Physiology
WOS IDWOS:000314897300003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/15901
Collection资源植物与生物技术所级重点实验室
Affiliation1.Kunming Inst Bot, Ctr Mt Ecosyst Studies, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Grad Sch, Kunming, Peoples R China
3.World Agroforestry Ctr, Nairobi 00100, Kenya
4.Tribhuvan Univ, Cent Dept Bot, Kathmandu, Nepal
5.Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Kunming 650204, Peoples R China
6.World Agroforestry Ctr, Kunming 650204, Peoples R China
Recommended Citation
GB/T 7714
Ranjitkar, Sailesh,Luedeling, Eike,Shrestha, Krishna Kumar,et al. Flowering phenology of tree rhododendron along an elevation gradient in two sites in the Eastern Himalayas[J]. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,2013,57(2):225-240.
APA Ranjitkar, Sailesh,Luedeling, Eike,Shrestha, Krishna Kumar,Guan, Kaiyun,&Xu, Jianchu.(2013).Flowering phenology of tree rhododendron along an elevation gradient in two sites in the Eastern Himalayas.INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,57(2),225-240.
MLA Ranjitkar, Sailesh,et al."Flowering phenology of tree rhododendron along an elevation gradient in two sites in the Eastern Himalayas".INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 57.2(2013):225-240.
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