علوم جنگل

وبلاگ علوم جنگل ،گياهان دارويي صنعتي و منابع طبیعی ایران و جهان

Biodiversity Workshop for Forest Ecosystems

Biodiversity Workshop for Forest Ecosystems Chaloos, Iran- June 1, 2008 A biodiversity workshop was held in the northern city of Chaloos to discuss the environmental issues in forest ecosystems. This workshop was held by the Iranian Department of Environment in collaboration with UNDP, GEF and IRGWF. The workshop was a good opportunity for researchers, government officials and environmental activists to share their views regarding problems facing conservation and protection of Iranian forests. Mr. Roshan-Zamir, the head of DOE in the province of Mazandaran, delivered the inauguration speech. He mentioned that there were about 500,000 ha. of land under the protection of DOE in that province. He further introduced the protected areas and the activities of DOE to protect valuable land resources. Mr. Fazel, the coordinator of the Biodiversity Action Plan of Iran, was the next speaker who elaborated on the importance of the Plan from the national and international viewpoints. He further discussed the need for coordination between the strategies and the action plans and also the need to look at the action plans as a project with complete structural functions. Mr. Smart was the next speaker. He gave a brief introduction of IUCN, including its history and activities. He further mentioned the Biodiversity Convention and the rapid increase of member parties. He added that the forest ecosystems of Iran, especially forests in the northern parts of Iran, were important ecosystems from the international viewpoints. The next speaker was Mr. Manser who talked about the concept of biodiversity and the need for cooperation among government agencies, non-governmental organizations and the public for implementation of environmental programs. A discussion group was formed to discuss issues regarding the management of forest ecosystems in Iran. A brief summary of discussed issues is presented below. The area of Iranian forests is about 12.4 million ha, Forests cover seven percent of Iran, The average forest area per capita in the world is 1.6 to 1.9 ha. / Person, whereas this figure is 0.24 ha. /person in Iran, There is a need for a comprehensive study on forest distribution, The experts should be invited in planning sessions, Public involvement in decision-making process would benefit forest conservation The concept of land use was defined, There is a direct relationship between deforestation and occurrence of floods, Contradictions among presented figures and data were caused by sectorial view rather than wholistic view in planning programs, It was announced that during the last 70 years the forest regulations have not been changed in accordance with national development requirements, There is a lack of executive power in many environmental regulations, The issue of resettlement for those who reside in forests and the obstacles in the implementation of resettlement projects were discussed, Forests should be looked upon as a valuable ecosystem with economic values, There is a need to preserve domestic species rather than to introduce foreign species to the ecosystem.

 maysammiar2007.persianblog.ir

 maysam_20_705@yahoo.com

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جنگل

مساحت جنگلهای جهان حدود 4 میلیارد هکتار است که 29 درصد سطح خشکی ها را می پوشاند 66 درصد از مساحت جنگلهای جهان در نیمکره شمالی و الباقی در نیمکره جنوبی می باشد بطور متوسط سالانه 5 درصد برابر 426 هزار هکتار جنگل در جهان تخریب می گردد طبق آمار FAO بیشترین سطح جنگل در آمریکای لاتین و کارائیب و کمترین سطح جنگل در اروپا می باشد همچنین 43 درصد از جنگلهای جهان در کشورهای توسعه یافته و 57 درصد در کشورهای در حال توسعه است
 سطــح کل جنگلهای ایران 4/ 12 میلیون هکتار می باشد که در حدود 6/ 7% از سطــح کل کشور را می پوشـاند که با توجه به جمعیت کشــور در حال حاضر سهم هــر ایرانی 2/ 0 هکتار می باشد. 
بدیهی است این رقم با توجـه به سرانه جهــانی جنگــل که 8/ 0 درصدهکتار می باشد حاکی از فقر و کمبود شدید کشور ما در این زمینــــه می باشد. لازم بــه یادآوری است که ا یـران در بین 56 کشور دارای جنگل درجهان مقــام چهــل و پنجم را دارا می باشد.

جنگلهای ایران را می توان به پنج ناحیه رویشی بشرح زیر تقسیم بندی نمود:

الف: ناحیه هیرکانی (خزری) که نوار سبز شمال کشور را تشکیل می دهد.
ب : ناحیه ایران و تورانی که بطور عمده در مرکز ایران پراکنده شده اند.
ج : ناحیه زاگرس که عمدتا" جنگلهای بلوط غرب کشور را تشکیل می دهند.
د : ناحیه خلیج فارس که در نوار ساحلی جنوب پراکنده می باشند.
ه : ناحیه ارسبارانی که متشکل از گونه های نادر و منحصر به فرد می باشند.

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 http://www.aftab.ir/statistics/agriculture/woodland/1382_woodland_.php

 

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