نتایج جستجو برای: ecological vulnerability

تعداد نتایج: 141973  

Journal: :Frontiers in Environmental Science 2022

The farmland social-ecological system is an integral part of a regional ecological system, and uses its unique perspective to trace the evolution vulnerability whole ecosystem. Based on theory ecosystem vulnerability, Vulnerability Scoping Diagram (VSD) assessment framework index were constructed by using multi-factor comprehensive analysis, ArcGIS spatial analysis factor contribution model. We...

Journal: :پژوهش های خاک 0
روح الله میرزایی استادیار گروه محیط زیست، دانشکده منابع طبیعی و علوم زمین، دانشگاه کاشان هادی قربانی دانشیار گروه خاک شناسی، دانشکده کشاورزی، دانشگاه صنعتی شاهرود ناصر حافظی مقدس استاد گروه زمین شناسی، دانشکده علوم، دانشگاه فردوسی مشهد

in order to better understand the extent of soil pollution by heavy metals and its effect on ecosystem, spatial information on ecological impacts of heavy metals would be necessary. therefore, in the present study, the spatial pattern of ecological risk of heavy metals (cadmium, lead, copper, nickel and zinc) have been identified in surface soils of golestan province. to this end, over 346 surf...

Journal: :Sustainability 2021

Quantitative assessment of ecological vulnerability is great significance for protection and restoration in ecologically vulnerable regions. Here, the northern sand prevention belt (NSPB) China was assessed using an pressure–sensibility–resilience model from 2000 to 2015. Results showed that index (EVI) displayed low values eastern part high western study region. The EVI ranged 0.29 1.32 2000, ...

Journal: :آمایش سرزمین 0
مهدی ایرانخواهی دکتری محیط زیست- ارزیابی و آمایش سرزمین، دانشکدة محیط زیست و انرژی، دانشگاه آزاد اسلامی- واحد علوم و تحقیقات، تهران، ایران سیدعلی جوزی دانشیار، دانشکدة فنی و مهندسی، دانشگاه آزاد اسلامی- واحد تهران شمال، تهران، ایران

the present study has been conducted on shemiranat county landscape, using lattice hexagon approach, for the first time, in order to achieve homogeneous units in degradation model. to this aim, with respect to the extent of the studied area, a lattice hexagon composed of 36 units (cells) was created and each grid cell was considered as a sub landscape. next, ecological vulnerability, degradatio...

Journal: :ISPRS international journal of geo-information 2021

Changing land-use patterns in the Qinghai–Tibet Plateau (QTP) due to natural factors and human interference have led higher ecological vulnerability even more underlying issues related time space this alpine area. Ecological assessment provides not only a solution surface-feature-related problems but also insight into sustainable eco-environmental planning resource management as response potent...

2017
Sterling Somers

A representational approach to ecological psychology is presented. This paper identifies a computational-level commonality in ecological psychology research related to passability of apertures. It is argued that a cognitive mechanism capable of comparing the geometric properties of an environment and the geometric properties of the agent can be used to support judgments for action in space.

Journal: :Presence 1998
Pavel Zahorik Rick L. Jenison

An alternative view of presence is introduced based on existential philosophy and ecological psychology. This view favors a Heideggerian/Gibsonian metaphysic over the more conventional rationalistic orientation. In this alternative view, notions of subjective presence and objective presence no longer exist. Presence is instead tied to one’s successfully supported action in the environment, this...

2004
Telmo Morato William W. L. Cheung Tony J. Pitcher

Based on life history and ecological characteristics, several authors have placed seamount fishes at the extreme end of the vulnerability spectrum. However, it was still unclear if there is justification for the generalization that seamount fishes overall possess specific life-history characteristics that render them more vulnerable to fishing than other species. In this contribution, we test t...

2013

Sutter, D. A. H., C. D. Suski, D. P. Philipp, T. Klefoth, D. H. Wahl, P. Kersten, S. J. Cooke, and R. Arlinghaus. 2012 Recreational Fishing Selectively Captures Individuals with the Highest Fitness Potential. Proceedings of the National Academy of Sciences 109, no. 51: 20960–20965. doi:10.1073/pnas.1212536109. Fisheries-induced evolution and its impact on the productivity of exploited fish stoc...

Journal: :Journal of environmental management 2006
Chris Procter Lex Comber Mark Betson Dennis Buckley Andy Frost Hester Lyons Alison Riding Kevin Voyce

Water use is expected to increase and climate change scenarios indicate the need for more frequent water abstraction. Abstracting groundwater may have a detrimental effect on soil moisture availability for crop growth and yields. This work presents an elegant and robust method for identifying zones of crop vulnerability to abstraction. Archive groundwater level datasets were used to generate a ...

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