نتایج جستجو برای: underpass

تعداد نتایج: 117  

Journal: :ISPRS Int. J. Geo-Information 2017
Peibei Zheng Hong Tao Songshan Yue Mingguang Wu Guonian Lv Chuanlong Zhou

Road networks are important for modelling the urban geographic environment. It is necessary to determine the spatial relationships of road intersections when using maps to help researchers conduct virtual urban geographic experiments (because a road intersection might occur as a connected cross or as an unconnected bridge overpass). Based on the concept of using different map layers to organize...

2015
Chadwick D. Rittenhouse Tony W. Mong Thomas Hart Stuart Pimm

Maintaining ecological integrity necessitates a proactive approach of identifying and acquiring lands to conserve unfragmented landscapes, as well as evaluating existing mitigation strategies to increase connectivity in fragmented landscapes. The increased use of highway underpasses and overpasses to restore connectivity for wildlife species offers clear conservation benefits, yet also presents...

Journal: :Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering) 2016

Journal: :Aquatic Conservation-marine and Freshwater Ecosystems 2023

Roads affect the connectivity of habitat and inhibit movements animals as a result road avoidance road-related mortalities. Freshwater turtles are particularly vulnerable to mortality on roads, females must often cross them when they leave aquatic environment nest. Ecopassages designed enable safe movement across roads by wild may be an effective measure reduce adverse impacts. Limited informat...

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