نتایج جستجو برای: management of natural ecological systems

تعداد نتایج: 21387558  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده حقوق 1389

if the precise implementation of the principle of proportion and:balance between the violation and the penalty as well as the other dimensions could be considered as a stick yard for the imptementation of justice any lack of preciseness in carrying out such principle would not indeed be much too far from injustice . naturally ,if it would be imagined that the objective of balance between...

آقایی, رقیه, بصیری, رضا, الوانی‌نژاد, سهراب , ذوالفقاری, رقیه ,

In applied studies, identification and study of vegetation, for management and protection of natural ecosystems, are very important. This study was carried out in Vezg forest with an area of 308 hectares located in southeast of Yasouj city. The purpose of this study was to classify ecological species groups and survey their relation to soil physic-chemical properties and physiographic attribute...

1998
N. van Duivenbooden

In many developing countries, limiting factors for development of sustainable production systems include variability in agro-ecological and socio-economic conditions, poor access to geo-referenced data and information, and poor relationship between the civil society, researchers and decision makers. Working with Interactive Development Scenarios (IDS) models may provide a way to plan (agricultu...

Journal: :international journal of environmental research 0

urban environments rely on the surrounding natural ecosystems remnants as providers of ecosystemfunctions, therefore these areas not only support a unique biodiversity but also have a social value for maintainingpublic health andwellbeing. for this reason, urbanization is considered to be one the biggest threats to ecosystems,leading to native biodiversity simplification and, thus, to a detrime...

2012
Sarah Michaels Andrew J. Tyre

To make a difference in policy making about socio-ecological systems, ecologists must grasp when decision makers are amenable to acting on ecological expertise and when they are not. To enable them to do so we present a matrix for classifying a socio-ecological system by the extent of what we don’t know about its natural components and the social interactions that affects them. We use four exam...

Therefore, this study was to evaluate the ecological potential of Ecotourism development in order to study extensive and focused outing in Shahreza County. In this respect, the ecological model of tourism development assessment was fitted. At first, data of slope, aspect, soil order, bedrock, vegetation, temperature and sunshine hour parameters were obtained, and the appropriate areas maps, fro...

Journal: :محیط زیست طبیعی 0
سعیده ملکی نجف آبادی عضو هیأت علمی گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه زابل، ایران علیرضا سفیانیان استادیار گروه محیط زیست دانشکده منابع طبیعی دانشگاه صنعتی اصفهان، ایران vahid rahdari عضو هیأت علمی گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه زابل، ایران

landscape ecology as a modern interdisciplinary science offers new concepts, theories, and methods for land evaluation and management. a main part of landscape ecology is describing patterns in the landscape and interpreting the ecological effects of these patterns on flora, fauna, flow of energy and materials. remote sensing and gis techniques have a high ability for landscape researchers to s...

2009
M. E. Kragt J. W. Bennett

Integrated catchment policies are widely used to manage natural resources in Australian catchments. Decision support tools available to aid integrated catchment management are often limited in their integration of environmental processes with socio-economic systems. Fully integrated models are required to support assessments of the environmental and economic trade-offs of catchment management c...

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