نتایج جستجو برای: land management

تعداد نتایج: 951800  

2017
Micael Jonsson Ryan M. Burrows Johan Lidman Emma Fältström Hjalmar Laudon Ryan A. Sponseller

Land use is known to alter the nature of land-water interactions, but the potential effects of widespread forest management on headwaters in boreal regions remain poorly understood. We evaluated the importance of catchment land use, land cover, and local stream variables for macroinvertebrate community and functional trait diversity in 18 boreal headwater streams. Variation in macroinvertebrate...

2017
G. Sofia G. Roder G. Dalla Fontana P. Tarolli

Raising interest in the interaction between humans and climate drivers to understand the past and current development of floods in urbanised landscapes is of great importance. This study presents a regional screening of land-use, rainfall regime and flood dynamics in north-eastern Italy, covering the timeframe 1900-2010. This analysis suggests that, statistically, both climate and land-use have...

Natural resource management is requires update and accurate information. Thus, monitor changes would have help to optimal management of natural resources and accurate recognition of resource changes. In this study, using digital data MSS (1977), TM (1988), ETM + (2002) and OLI (2014) studied hamoun wetlands and land cover Its surrounding changes over a period of 38 years (2014-1977) using the c...

ژورنال: علوم آب و خاک 2015
اسکندری, ذبیح‌الله, بحرینی‌نژاد, بابک, جعفری‌اردکانی, علی, پارسادوست, فرزاد,

Evaluation of chemical and biological indicators of soil in different land uses could be helpful in sustainable range management, preventing degradation of soil quality trend. This study was conducted in Friedan in Isfahan province in 2010 to compare chemical and biological indicators in three land uses (rangeland, degraded dry land and dry land), during two growing seasons (May and September) ...

Land use change in watershed management one of the most important hydrological factors surface runoff change and water management practices. the purpose of this investigation, Impact of Land Use and drought on runoff of  Tuyserkan watershed in Hamedan  In central zagros In the three time periods of 1991, 2003 and 2015 (25 years) using hydrological modeling is the rainfall-runoff relationship (I...

Journal: :آمایش سرزمین 0
امید کرمی کارشناس ارشد جنگل داری، دانشگاه علوم کشاورزی و منابع طبیعی ساری سیدمحمّد حسینی نصر . استادیار گروه جنگل داری، دانشگاه علوم کشاورزی و منابع طبیعی ساری حمید حمید جلیل وند دانشیار گروه جنگل داری، دانشگاه علوم کشاورزی و منابع طبیعی ساری میرحسن میریعقوب زاده . دانشجوی دکتری آبخیزداری، دانشگاه علوم کشاورزی و منابع طبیعی ساری

inappropriate patterns and drastic changes in land-use have caused the severe environmental crisis. therefore, it is necessary to accomplish any plan in relation to establishment of different activities with respect to land capabilities and land-use evaluation thought. in this study, ecological capabilities and the site selection of land uses in babolrood basin, mazandaran province were evaluat...

Journal: :محیط زیست طبیعی 0
مهدی شیخ گودرزی دانشجوی کارشناسی ارشد محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران افشین علیزاده شعبانی استادیار محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران عبدالرسول سلمان ماهینی دانشیار محیط زیست، دانشکده شیلات و محیط زیست، دانشگاه گرگان، ایران جهانگیر فقهی دانشیار جنگلداری، دانشکده منابع طبیعی، دانشگاه تهران، ایران

human activities induced changes in land cover/use have extensive impacts on the landscape. in recent years, these changes had an increasingly growth due to irrational use of the natural resources in iran. hence, considering the negative effects of the inappropriate use of land and land-use change, understanding of the landscape changes over time is necessary to planning and implementation of s...

Quantitative study of species diversity across different land use units and districts is important to document status of local plant biodiversity, to evaluate impact of management and for planning future management. This study aimed at determining impacts of land use units on species diversity and spatial distribution of species in two districts of Borana zone, Oromia, Ethiopia. Stratification ...

Journal: :international journal of geo science and environmental planning 0
moslem heydari management and planning in natural resources, watersheds and environmental sciences afshin honarbakhsh river hydrodynamic mahdi pajoohesh erosion and sedimentation of soil maryam zangiabadi operation research, programming, planning

in recent years, due to absence of integrated watershed management in most regions, natural resources have witnessed numerous damages with severe floods as one of its consequences which further leads to economic, social and environmental damages. presently, there is no optimal utilization of land in most watersheds hence no optimal model matching with facilities and objectives is used in the wa...

2010
Ling Wang Xin Lv Hailong Liu

This paper, with No.22 State Farm, Agricultural Division No.2, XPCC as the example and under support of GIS, takes cultivated land plot as the evaluation unit and chooses 13 influence factors from five aspects of nutrient of cultivation layer, physical and chemical properties of cultivation layer, soil management, climate conditions and obstacle factor to establish desert oasis cultivated land ...

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