Share Email Print

Proceedings Paper

Analysis of changes in crop farming in the Dudh Koshi (Nepal) driven by climate changes
Author(s): Marco Gianinetto; Francesco Polinelli; Federico Frassy; Martina Aiello; Francesco Rota Nodari; Andrea Soncini; Daniele Bocchiola
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Nepal is one of the poorest nations of the world and the Koshi Basin includes some of the poorest regions of this country. It’s farming system is subsistence agriculture, mainly rainfed, with crop productivity among the lowest in South Asia. Nepal is also severely impacted by climate changes, such as retreat of glaciers, rise in temperature, erratic rainfalls and increase in frequency of extreme weather. This paper describes the spatio-temporal evolution of cultivated land in Dudh Koshi during the last four decades (1970s-2010s), by mapping the farming of its four main cereals in the districts of Solukhumbu, Okhaldunga and Kothang from space. The analysis of satellite time series showed a 10% of increment in farmland from 1970s to 1990s, and about 60% in the following twenty years. With a shift of cropping to higher altitudes. Data belonging to of the second twenty years are strongly correlated with the population growth observed in the same period (0.97<R2<0.99) and consistent with the average daily caloric intake. Finding confirms the result of recent studies that agriculture practices once distributed in lowland areas have now spread to higher altitudes and seems to suggest that demographic and socioeconomic pressures are driving the expansion, while climatic and topographic parameters are just channeling the expansion. Apart from any policies that could change the tack, Dudh Koshi should be able to meet the increasing demand of cereals in the near future and climate seems not being a limiting factor for further development as it will be the availability of an irrigation system.

Paper Details

Date Published: 5 October 2017
PDF: 8 pages
Proc. SPIE 10428, Earth Resources and Environmental Remote Sensing/GIS Applications VIII, 104281R (5 October 2017);
Show Author Affiliations
Marco Gianinetto, Politecnico di Milano (Italy)
Francesco Polinelli, Politecnico di Milano (Italy)
Federico Frassy, Politecnico di Milano (Italy)
Martina Aiello, Politecnico di Milano (Italy)
Francesco Rota Nodari, Politecnico di Milano (Italy)
Andrea Soncini, Politecnico di Milano (Italy)
Daniele Bocchiola, Politecnico di Milano (Italy)

Published in SPIE Proceedings Vol. 10428:
Earth Resources and Environmental Remote Sensing/GIS Applications VIII
Ulrich Michel; Karsten Schulz, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?