نتایج جستجو برای: rangeland ecosystems

تعداد نتایج: 48371  

ژورنال: مرتع 2021
Ghorbani, Jamshid, Khalili Narani, Keyvan, Zali, Seyed Hassan,

Pteridium aquilinum is known as an invasive species  in different ecosystems of the world. The spread of this species is increasing in the north of Iran particularly outside of forest ecosystems. In this study, the amount and composition of soil seed banks in the dense pathes of  Pteridium were investigated in summer rangelands of  Bandpay in the south of Babol city in Mazandaran province, Iran...

Journal: :مرتع و آبخیزداری 0
رضا سیاه منصور دانشجوی دکتری علوم مرتع، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران حسین ارزانی استاد دانشکدة منابع طبیعی دانشگاه تهران محمد جعفری استاد دانشکدة منابع طبیعی دانشگاه تهران سید اکبر جوادی استادیار دانشکدة کشاورزی و منابع طبیعی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران علی طویلی دانشیار دانشکدة منابع طبیعی دانشگاه تهران

fire consider as a factor and basic management in rangeland in order to reform of composition and biological diversity that use in rangeland ecosystems. this project was established to deal with the effect of fire in the research center for rangeland. zagheh locale where is in 35 km of north eastern of khoramabad with 1960 meters above sea level. the average comparison and analysis show that he...

Journal: :Journal of environmental quality 2006
Charles W Rice

AGRICULTURAL cropland, forest, rangeland, wetlands, and urban ecosystems have significant potential to offset large amounts of greenhouse gases (GHGs) through improved land management and increased productivity. To fully realize this potential, we must understand how to implement the proper management practices and technologies to mitigate carbon dioxide (CO2), nitrous oxide (N2O), and methane ...

ژورنال: مرتع 2023

Rangeland management is one of the basic items in ecosystem management and its purpose is the optimal use of rangelands in order to achieve the desired yield and maintain the stability of rangeland ecosystems. Rangelands play an infrastructural role in the countrychr('39')s economy and pave the way for achieving the goals of sustainable development. However, due to the importance of these resou...

Rangeland vegetation dynamics can be affected by various natural and unnatural factors over time. The purpose of this study was to investigate the dynamics of vegetation under the climatic conditions and soil properties. Accordingly, data collection for evaluating vegetation dynamics in rangeland ecosystems of Ardabil province was conducted at three research sites including Moqan winter rangela...

2017
Xinyang Yu Changhe Lu Antonio Fernández-Caballero

The importance of accurately monitoring rangeland degradation dynamics over decades is increasing in Linxia rangeland, the birthplace of the Yellow River in China. Since 2000, the Chinese government has implemented the “Grain for Green” program and enforced a grazing ban in Gansu province, one of the most degraded provinces, to mitigate the problem of rangeland degradation. The effects of these...

Journal: :journal of rangeland science 2015
yaser feizabadi seyedeh sarah hadian

forests and rangelands are the most important natural ecosystems which provide many economic benefits to the society due to their biodiversity and ecological functionalities. dashtenaz wildlife refuge, sari, is a sylvan region, covering 55 ha of rangeland with abundant diversity, is refuge of an endangered species of deer called dama mesopotamica. in this study, contingent valuation method (cvm...

Journal: :مرتع و آبخیزداری 0
سعیده ابراهیمی ازندریانی سیدحمیدرضا صادقی

recognition of rangeland species with the maximum efficiency and the minimum water usage is very important, since major parts of rangelands in iran are located in arid and semiarid climate. in addition, the rangeland improvement and management on the basis of transpiration rate of rangeland species in different climatic conditions has great importance. the goal of this research is comparison an...

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