نتایج جستجو برای: shdi
تعداد نتایج: 43 فیلتر نتایج به سال:
اگر چه تحقیقاتی در خصوص پایش و تحلیل خشکسالی هواشناسی صورت گرفته، لیکن پژوهشهای انجام شده در زمینۀ خشکسالی آب زیرزمینی در مناطق با برداشت زیاد محدود است. در این تحقیق، ضمن بررسی اثرات برداشت از آبخوان، خشکسالی آب زیرزمینی در دشت قزوین بر مبنای تراز طبیعی آب زیرزمینی تحلیل میگردد. تراز آب زیرزمینی با استفاده از مدل ترکیبیMODFLOW-ANN در طول یک دورۀ 50 ساله و یک دورۀ سه ساله طبیعیسازی شد. خشکسا...
بررسی تغییرات پوشش اراضی استان چهارمحال و بختیاری با استفاده از متریکهای سیمای سرزمین (2015-1994)
Due to the importance of accessibility to updated and timely information regarding land cover changes, it is necessary for researchers and managers to assess such provincial level changes to help the planning process and prevent the damages caused in various regions. To this end, the Chaharmahal and Bakhtiari Province land cover changes from 2015-1994 were developed in six main classes using th...
Under rapid urbanization, many cities in China suffer from serious fine particulate matter (PM2.5) pollution. As the emission sources or adsorption sinks, land use and the corresponding landscape pattern unavoidably affect the concentration. However, the correlation varies with different regions and scales, leaving a significant gap for urban planning. This study clarifies the correlation with ...
Nature reserves play an essential role in protecting natural resources and maintaining an ecological balance. However, certain nature reserves are increasingly disturbed by human activities in the form of settlements, roads, farmland, etc. How to monitor the status of nature reserves by using remote sensing methods has been a focus of scholars for a long time. In this study, remote sensing sate...
PDF HTML?? XML?? ???? ???? ???????????????????? DOI: 10.5846/stxb202204110949 ??: ????: ????: ????: ?????: ????: ???????????41907179?41961144027?42005126?????????????????752013? Effects of landscape pattern on water quality at multi-spatial scales in the Liuxi River Author: Affiliation: Fund Project: ?? | ?/? ???? ???? ???? ???? ???? ???? ??:?????????????????????????2020?6??2021?1???????15?????...
Mangrove ecosystems are of high ecological value and occur in tropical subtropical coastal areas. They consist salt-tolerant woody plants highly complex productive. Here, a novel approach was developed to map disturbances evaluate the status Iranian mangroves based on multispectral WorldView-2 Sentinel-2 remote sensing techniques. A land cover generated that serves as basis assess changes compo...
Landscape structure and biotic indicators have a significant role in assessing the green infrastructure of landscape design territorial ecological network. In this contribution, methodological approach has been developed for defining current land use biota that can be used designing network stability. We assessment stability elements structure, an index representative geo-ecosystem, cumulative ...
With the unprecedented urbanization processes around world, cities have become main areas of political, cultural, and economic creation, but these regions also caused environmental degradation even affected public health. Ecological landscape is considered as an important way to mitigate impact exposure on urban residents. Therefore, quantifying quality road exploring its spatial heterogeneity ...
Since 2008, soil and water treatment ecological restoration have been applied in the karst areas of Southwest China, but effect treatments fault basins is not clear. As a typical watershed faulted basin, studying influence landscape pattern changes on runoff sediment yields Nandong underground river system (NURS) helps to establish relationship between changes. It provides theoretical basis eff...
Land cover has rapidly changed due to the relatively high population density, high rate of seasonal and permanent migrants, favorable conditions of natural and cultural, frequency of industrial units, coastal border and harbour and great rate of construction in the mazandaran province in recent years. Land cover changes are led to fragmentation, perforation, dissection, shirinkage, attrition an...
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