الأربعاء، 18 ديسمبر، 2013

لمن لا يعرف قيمة شجرة قبل ان يقدم على قلعها


A price tag for a tree

Professor T.M. Das of the University of Calcutta came up with a price tag for a tree, in an effort to satisfy skeptic economists about the value of letting native forests live. The price was US$ 193,250. This amount was reached through the following bookkeeping: A tree living for 50 years…





Generates oxygen worth
US$ 31,250
Controls air pollution for
US$ 62,000
Reduces soil erosion and increases soil fertility for
US$ 31,250
Recycles water worth
US$ 37,500
Provides a home for animals worth
US$ 31,250
Total US$ 193,250


This figure does not include the value of the fruits, lumber or beauty derived from trees.
This amount multiplied by number of trees in tropical rainforests around the world, times the number of tourists visiting these regions times an indefinite (or eternal) number of years using the resources in a sustainable manner certainly surpasses in astronomical figures any type of natural resource exploitation in those regions of the world.
 

Dr. EMAD HANI ISMAEEL

                 Ph.D. in Technologies for the Exploitation

                 of the Cultural Heritage .

                 Senior Lecturer in the Dept. of Architecture

                 College of Engineering , University of Mosul 
                 Mosul - Iraq .

E-mail:        emadhanee@yahoo.com

                   emadhanee@gmail.com


                   http://emadhani.blogspot.com/

Tel :           +964 (0)770 164 93 74

 

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