کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
83127 158688 2016 13 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
A cost path and network analysis methodology to calculate distances along a complex river network in the Peruvian Amazon
ترجمه فارسی عنوان
یک روش شناسی مسیر هزینه و تجزیه و تحلیل شبکه برای محاسبه فاصله در امتداد یک شبکه پیچیده رودخانه در آمازون پرو
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک جنگلداری
چکیده انگلیسی


• A cost path and network analysis methodology was developed using GIS.
• The methodology calculates distances travelled using fluvial networks.
• 919 communities in the Peruvian Amazon were included in the distance calculations.
• The accuracy and scale of the data acquired yields opportunities for replication.
• Results important for understanding livelihoods that depend on the river network.

Distance is a key variable in explicating environmental, social, and economic conditions and in defining spatial and temporal patterns. Prior research has primarily focused on using simple to complex algorithms for calculating distances along road networks. In contrast, few algorithms are available for distance calculations along fluvial networks which are often more erratic, divergent and transient than road networks. Fluvial transportation is relied upon worldwide, particularly in developing regions, where communities use river networks for transportation, access to natural resources and for trade and commerce. This paper presents a methodology developed for mapping complex fluvial networks for travel distance analysis. The methodology was applied in four major river basins in western Amazonia over some 35,000 km of river length and incorporating 919 communities as origins/destinations. A cost path and network analysis methodology was created using vector and raster datasets in a Geographic Information System (GIS) to assess interactions among communities and the distances traveled by river to reach district capitals, major urban centres and marketplaces. An accuracy assessment using distance values calculated from a previous study using a different methodological approach in the region as well as Google Earth Pro, found a high degree of concordance for distance calculations. Our methodology creates a very flexible approach for complex river systems that can be use to calculate river distances in an adaptive and efficient manner and that can be use in other regions of the world where rural communities must rely on rivers for transportation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Geography - Volume 73, August 2016, Pages 13–25
نویسندگان
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