Pakistan has been placed among six top remittance-receiving states of the world in the year 2011 while the South Asian region is expected to receive $97 billion in the current calendar year, 2012.
An Asian development Bank (ADB) report titled, "Addressing Climate Change and Migration in Asia and the Pacific," says that according to the World Bank's forecasts, remittance flows to East Asia and the Pacific will reach $109 billion in 2012 (up from $85 million in 2008), while South Asia is forecast to receive $97 billion (up from $72 billion in 2008).
In 2011, six of the top eight remittance-receiving nations of the world were in Asia: India ($58 billion), PRC ($57 billion), Philippines ($23 billion), Pakistan ($12 billion), Bangladesh ($12 billion) and Vietnam ($9 billion) The ADB report says that by 2050 it is anticipated that 1.4 billion Indians will be living in areas experiencing negative climate change impacts. Moreover, there will be more than 250 million people living in hot spots at multiple risk of climate change in both Bangladesh and Pakistan. While most people will adapt in situ, the potential for redistribution of population through migration is substantial.
According to the report, environmental factors are already increasingly important migration drivers in many countries of Asia and the Pacific, including Bangladesh, the PRC, Pakistan, Papua New Guinea, Philippines, and Viet Nam. Floods, cyclones, and desertification have led in recent years to significant population movements, mostly from rural to urban areas.
With its vast population, South Asia has become an important source region of migrants to other parts of Asia and the Pacific and the world. The Indian and Pakistani Diasporas are among the largest and most extensive in the world, and Bangladesh, India, Nepal, Pakistan, and Sri Lanka are some of the major origins of temporary unskilled labour for the Middle East and elsewhere. Similarly, skilled migration from these countries, especially India, to OECD member countries has accelerated in recent years.
In July 2010, Pakistan was affected by heavy monsoon rains, which led to massive flooding in the Indus River basin. The flood led to the displacement of more than 10 million people, with about 20 percent of the country under water. About 2,000 people perished in the disaster. The provision of international aid relief was widely considered as insufficient, and the floods took a very heavy toll on the country and its population, with millions of farmers housed in refugee camps, and crops and cattle destroyed.
The report reveals that the climate-related disruptions of human populations and consequent migrations can be expected over the coming decades. Climatic changes in Pakistan and Bangladesh would likely exacerbate present environmental conditions that give rise to land degradation, shortfalls in food production, rural poverty and urban unrest In association with an intensification of the monsoon, river and local flooding will be increased in many areas, the Himalaya, northern Pakistan, northern India, Nepal, and Bangladesh. Landslide risk will increase in association with flood risk in steep terrain, particularly in the Himalaya.
According to the ADB report, the widespread salinization, land degradation, water stress, and desertification are expected to affect many parts of Central and West Asia. Increased cyclonic activity is expected to affect southern Pakistan. The mega city of Karachi in Pakistan is at high risk from sea-level rise, prolonged cyclonic activity, and greater salt-water intrusion.