frequencies evaluation in estimation of tree species diversity in degraded forests case study: kouhmian forests, azadshahr, golestan province

نویسندگان

مهرداد میرزایی

دانشجوی دکتری جنگلداری دانشکدة منابع طبیعی دانشگاه گیلان، صومعه‏سرا، ایران امیر اسلام بنیاد

دانشیار گروه جنگلداری دانشکدة منابع طبیعی دانشگاه گیلان، صومعه‏سرا، ایران حسن پوربابایی

دانشیار گروه جنگلداری دانشکدة منابع طبیعی دانشگاه گیلان، صومعه‏سرا، ایران محبوبه محبی بیجارپس

دانشجوی دکتری جنگلداری دانشکدة منابع طبیعی دانشگاه گیلان، صومعه‏سرا، ایران

چکیده

aim of this research was evaluated and compared of density (number tree per hectare), basal area and volume characteristics for estimation of tree species diversity in degraded forests. in order to, 73 hectares of kouhmian forests was inventory based on random systematic pattern with circular plots (10r and 26 plots). in each plot species, dbh and number of tree were measured and recorded. to estimate of tree species diversity was used from simpson, hill’s n2, shannon-wiener and mc arthur’s n1 indices and for calculation of evenness and species richness were used from wilson- smith’s and margalef indices respectively. also species importance value (siv) was calculated. the results showed that forest structure is irregular and uneven structure. also the results showed that in calculation of diversity and evenness indices, if density is selected as calculation criteria, amount of these indices is more than to volume and basal area that are selected as calculation criteria. the results of siv showed that the highest value of siv belonged to carpinus betulus (212.52%) and the lowest value belonged to zelkova carpinifolia (6.82%). also margalef index showed that amount of richness is equal to 1.13.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Estimation of species diversity of trees and shrubs using ETM+ sensor data (Case study of forests in Qalajeh Kermanshah province)

The use of remote sensing techniques as a suitable solution to estimate the levels of species diversity is of high importance for the sustainable management of forests. In order to investigate the potential of using sensor data from Landsat 7 ETM+ to estimate species diversity in the Zagros forests, digital data related to the August 7, 2002 from forests in the Qalajeh Kermanshah Province were ...

متن کامل

Estimation of species diversity of trees and shrubs using ETM+ sensor data (Case study of forests in Qalajeh Kermanshah province)

The use of remote sensing techniques as a suitable solution to estimate the levels of species diversity is of high importance for the sustainable management of forests. In order to investigate the potential of using sensor data from Landsat 7 ETM+ to estimate species diversity in the Zagros forests, digital data related to the August 7, 2002 from forests in the Qalajeh Kermanshah Province were ...

متن کامل

Estimation of species diversity of trees and shrubs using ETM+ sensor data (Case study of forests in Qalajeh Kermanshah province)

The use of remote sensing techniques as a suitable solution to estimate the levels of species diversity is of high importance for the sustainable management of forests. In order to investigate the potential of using sensor data from Landsat 7 ETM+ to estimate species diversity in the Zagros forests, digital data related to the August 7, 2002 from forests in the Qalajeh Kermanshah Province were ...

متن کامل

Estimation of species diversity of trees and shrubs using ETM+ sensor data (Case study of forests in Qalajeh Kermanshah province)

The use of remote sensing techniques as a suitable solution to estimate the levels of species diversity is of high importance for the sustainable management of forests. In order to investigate the potential of using sensor data from Landsat 7 ETM+ to estimate species diversity in the Zagros forests, digital data related to the August 7, 2002 from forests in the Qalajeh Kermanshah Province were ...

متن کامل

estimation of species diversity of trees and shrubs using etm+ sensor data (case study of forests in qalajeh kermanshah province)

the use of remote sensing techniques as a suitable solution to estimate the levels of species diversity is of high importance for the sustainable management of forests. in order to investigate the potential of using sensor data from landsat 7 etm+ to estimate species diversity in the zagros forests, digital data related to the august 7, 2002 from forests in the qalajeh kermanshah province were ...

متن کامل

Comparison of Species Diversity of Natural and Man-made Gaps at Different Physiographic Conditions in Siahkal Forests of Gilan Province

<p</pThis study was conducted to compare regeneration density and biodiversity indices in the natural and man-made gaps in the Tutaki forests of Siahkal in Gilan province. Data were collected from 60 gaps (including 30 natural and 30 man-made gaps). The results of species composition indicated that three tree species including Diospyros lotus L., Carpinus betulus L. and Alnus glutinosa L. in bo...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
جنگل و فرآورده های چوب

جلد ۶۸، شماره ۴، صفحات ۹۷۱-۹۷۹

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023