Dinesh R. BHUJU Chief, Faculty of Science Nepal Academy of Science & Technology ________________________________________________ _____ SPECIES RESPONSE TO CLIMATE CHANGE IN HIGH ALTITUDES initiative of a national organization in the Himalayan discourse
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Dinesh R. BHUJU Chief, Faculty of Science Nepal Academy of Science & Technology
Dinesh R. BHUJU Chief, Faculty of Science Nepal Academy of Science & Technology. SPECIES RESPONSE TO CLIMATE CHANGE IN HIGH ALTITUDES initiative of a national organization in the Himalayan discourse. _____________________________________________________. Nepal Academy of - PowerPoint PPT Presentation
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Bell shaped, poor regeneration in recent yearsInverse J, accelerating recruitments in recent yearsAverage age:Panboche 64 yrs; Debuche 64 yrsMax. age: Panboche 147 yrs; Debuche 207 yrs
Dendro-climatological Study
TREE CORE ANALYSIS
Climatic Impact
DENDRO-LAB
Lab Facility: 1. Lin-Tab digital positioning table for tree-ring analysis2. Leica S4E stereo microscope3. LintabTm swing arm stand4. TSAP-Win Prof. software
Participating Institutions• Central Dept of Env Sc. Tribhuvan Univ.• Department of Plant Resources, GON• The Standard Nursery Pvt Ltd• Nepal Academy of Science & Technology• College for Applied Sciences• Dept. of Forest Research & Survey, GON• Dept of Hydrology & Meteorology, GON• National Trust for Nature Conservation• Dept. of National Parks & Wildlife Cons. • Ethnobotanical Society of Nepal• Madan Puraskar Guthi• Central Dept. of Botany, TU
Climatic Impact
DENDRO-TRAINING WORKSHOP
Date: 15-22 Jan 2008Total Participants: 18Resource Persons: Univ. of Padova
Climatic Impact
DENDRO-CLIMATOLOGICAL STUDIES Langtang National Park
NP Gaire & DR Bhuju, NASTPinus roxburghii; Core 65
Climatic Impact
RESULTS: MANASLUThere was new recruitments of seedlings and saplings in tree-line ecotone. The species limit has advanced from 3,673m asl in 1958 to 3,841m asl in 2007 with a total of 168 m upslope shift at the average rate of 34.29 m per decade. The seedlings below tree-line have comparatively faster growth.______________________________
Ref. M. Suwal 2010
Abies spectabilis
Betula utilis
Transect 1
Transect 2
Transect 1
Transect 2
Species limit/line
3984 3955 3996 4003
Tree line
3907 3830 3996 4003
Preliminary result:upward migration of Abies spectabilis by >1m/yr
Ref. Gaire & Bhuju 2010
Climatic Impact
RESULTS: MANASLU
Climatic Impact
RESULTS: LANGTANG1. There was significant -ve
correlation between the tree growth & mean monthly min. temp. of Mar & Apr of the current year, Oct of the previous year, and mean of Mar-May temp. of the current year.
2. Though statistically insignificant, there was +ve correlation between ring width and mean monthly precipitation of the most of the months of current year and -ve correlation with previous year’ precipitation.
________________ Ref. NP Gaire 2008
Climatic Impact
RESULTS: MUSTANG
The positive response of temperature (previous Nov, current Feb-Mar-May) during the early and mid 20th century was either both discontinuous and showed no correlation with tree growth at later period (Feb-Mar) or it turned to be negatively associated with growth (previous Nov and current May). This recent change in sensitivity of tree growth and temperature variability was unclear. ____________________
Ref. E Udas 2010
Climatic Impact
WHAT NEXT
Extend the study areaStrengthen the Dendro-LabInternational collaboration