Jul 6, 2011
The valleys and lowermost hillsides of Nepal are subtropical; the crops grown there include tea and coffee and these banana trees. If a sturdy trekker were determined to leave the subtropics behind, he or she could walk straight uphill from here into patches of spring snow in a few hours, and into the glacial icefields of the high Himalaya in a few days.
Global warming is spreading up the mountainsides. Nepalis hope they have figured out a way to make money on climate change; the increasing heat in the air that has reduced productivity of tea plantations in India seems to have permitted tea cultivation higher than ever before on Nepalese hillsides. Not all the new plantings have thrived–the air is thinner in the high mountains, and the soil is rocky and poor. But fine tea is coming out of Nepal these days, from slopes about a mile higher than the bananas shown here.
In the long run, of course, tea won't save Nepal. As the glaciers shrivel in the high mountains and a scanty winter snowpack produces less and less spring runoff for the rivers of the subcontinent, people will have a hard time growing much of anything. Huge thirsty cities downstream are already beginning to compete for water with peasants struggling to irrigate the tiny terraces they have clawed into the mountainsides of Nepal.
Well. Maybe somebody will think of something.