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Paper Information

Journal:   RENEWABLE NATURAL RESOURCES RESEARCH   SPRING- SUMMER 2018 , Volume 9 , Number 1 (SERIAL NUMBER 29) #p00527; Page(s) 33 To 46.
 
Paper: 

Application of regression-based methods for determining canopy ecohydrological characteristics of Picea abies stand in Kelardasht

 
 
Author(s):  Abasian Parisa, ATTAROD PEDRAM*, SADEGHI SEYED MOHAMMAD MOEIN, BAYRAMZADEH VILMA
 
* Department of Forestry and Forest Economics, University of Tehran, Karaj, Iran
 
Abstract: 
The aim of the present study was to estimate the canopy water storage capacity (S) and ratio of mean evaporation rate from the wet canopy to the mean rainfall intensity ( E / R ) and the direct throughfall coefficient (p) of a Picea abies plantation in a semi-humid climate using the regression methods in Kelardasht, North of Iran. To measure gross rainfall (Pg), four rain-gauges were installed in an open space adjacent to the stand and throughfall (Tf) measured using the twenty rain-gauges which randomly located beneath the canopy cover. Rainfall interception (I) was calculated as the difference between Pg and Tf. Twenty-one rainfall events were recorded with a cumulative depth of 380. 1 mm. The Tfand Tf% were recorded 48. 8% and 39. 6% of the incident rainfall on the cumulative-based and event-based (each Pg), respectively. Positive linear correlation was observed between I and Pg (r = 0. 92) and logarithmic correlation was established between Tf% and Pg (R2 = 0. 43). The mean value of p, S, and E / R were estimated to be 0. 34, 2. 15 mm, and 0. 43, respectively. Awareness of p and S values can be applied for appropriate silvicultural treatments in forest stands with respect to climate and rainfall.
 
Keyword(s): Canopy water storage capacity,Picea abies,Plantation,Throughfall
 
References: 
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