نتایج جستجو برای: ecological indicators

تعداد نتایج: 205687  

Journal: :Remote Sensing 2017
Jin Yeu Tsou Yanfei Gao Yuanzhi Zhang Genyun Sun Jinchang Ren Yu Li

In this study, we present the evaluation of urban land carrying capacity (ULCC) based on an ecological sensitivity analysis. Remote sensing data and geographic information system (GIS) technology are employed to analyze topographic conditions, land-use types, the intensity of urban development, and ecological environmental sensitivity to create reasonable evaluation indicators to analyze urban ...

2011
Chen Zeng Yaolin Liu Yanfang Liu Jiameng Hu Xiaogang Bai Xiaoyu Yang

Aquatic ecological carrying capacity is an effective method for analyzing sustainable development in regional water management. In this paper, an integrated approach is employed for assessing the aquatic ecological carrying capacity of Wujin District in the Tai Lake Basin, China. An indicator system is established considering social and economic development as well as ecological resilience pers...

Journal: :international journal of advanced biological and biomedical research 2013
gholam reza rahdari mohammad reza rahdari ali akbar fakhireh ali reza shahryari hassan khosravi

today one of the ecological crisis is the phenomenon of desertification that affecting the world. desertification is more related to social and anthropogenic issues than natural causes and it becomes more important over the time. monitoringis the systematic collection and analysis of information as a project progresses. in this study, using ahp method and gis techniques has been to assess deser...

Journal: :محیط شناسی 0
لیلا رحیمی بلوچی دانشگاه تهران، کارشناس ارشد برنامه ریزی و مدیریت محیط زیست، دانشکدة محیط زیست، بهرام ملک محمدی دانشگاه تهران، استادیار گروه برنامه ریزی و مدیریت محیط زیست، دانشکدة محیط زیست

this study was aimed to identify and mange the most stressful risks threatening shadegan international wetland. shadegan international wetland which is located in the southwest of iran is in the montero list and now threatened by several risks. in this study, the most important threatening risks of the wetland were identified. in the characteristics step, the risks were analyzed based on the se...

2005
William J. Zielinski

Carnivores play important roles in structuring communities, and their populations are useful indicators of ecosystem condition (Wennergren and others 1995, Buskirk 1999, Crooks and Soulé 1999, Terborgh and others 2001). As many as 4 of 20 native mammalian carnivore species have been extirpated from the southern Cascade Mountains and Sierra Nevada, with unmeasured effects on ecological communiti...

Journal: :Cadernos de saude publica 2011
Alvaro J Idrovo

The objective of this ecological study was to ascertain the effects of physical environment on life expectancy at birth, using data from all 32 Mexican states. 50 environmental indicators with information about demography, housing, poverty, water, soils, biodiversity, forestry resources, and residues were included in exploratory factor analysis. Four factors were extracted: population vulnerabi...

Journal: :Archives of Environmental Contamination and Toxicology 2018

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