Canada's withdrawal comes ahead of a major convention in Bonn, Germany, "to carry out the first ever comprehensive cost-benefit analysis of desertification, land degradation and drought", the UN Environment Programme said.

BBC: Canada 'only nation to leave UN drought agreement'

Due to the consequences of the environmental crisis in Aral Sea region such as poor soil conditions, intensive desertification and land degradation, the farmers and dehkhans often face a plenty of problems.

UNESCO: OFFICE IN TASHKENT

The country's State Forestry Administration estimates that desertification affects 400 million Chinese, many of whom lose the ability to farm their land or graze their animals and join the ranks of the tens of millions of internal environmental refugees, who often migrate to the big cities in search of new homes and jobs.

CNN: Economic miracle, environmental disaster