Tropical Asia is a region in Asia that experiences tropical climate. It is physiogeographically and economically rich in natural resources and biodiversity, including many species of agricultural value. There are 16 countries of tropical Asia ranging in size from around 610 km² (Singapore) to 3,000,000 km² (India). Its population, is dominantly rural—however, in 1995, a census showed a region with 6 out of 25 of the large cities. The population is 1.6 billion, likely to reach 2.4 billion in 2025. Climate in tropical Asia is subject to seasonal weather patterns with the two monsoons and the amount of tropical cyclones in the three core areas of cyclogenesis (the Bay of Bengal, north Pacific Ocean and South China Sea). The climate varies over several environmental factors such as: growing urbanization, land industrialization and economic development or the opposite land degradation, environmental issues, and increased pollution. Tropical Asia is a region in Asia that experiences tropical climate. It is physiogeographically and economically rich in natural resources and biodiversity, including many species of agricultural value. There are 16 countries of tropical Asia ranging in size from around 610 km² (Singapore) to 3,000,000 km² (India). Its population, is dominantly rural—however, in 1995, a census showed a region with 6 out of 25 of the large cities. The population is 1.6 billion, likely to reach 2.4 billion in 2025. Climate in tropical Asia is subject to seasonal weather patterns with the two monsoons and the amount of tropical cyclones in the three core areas of cyclogenesis (the Bay of Bengal, north Pacific Ocean and South China Sea). The climate varies over several environmental factors such as: growing urbanization, land industrialization and economic development or the opposite land degradation, environmental issues, and increased pollution. In tropical Asia, the distribution and character of the rainforest changes with elevation in the mountains. In Thailand, for instance, the area of tropical forests could increase from 45% to 80% of the total forest cover, while in Sri Lanka, a substantial change in dry forest and decrease in wet forest might occur. With predictable increases in evapotranspiration and rainfall changeability, likely a negative impact on the viability of freshwater wetlands will occur, resulting in contraction and desiccation. Sea level and temperature rises are the most likely major climate change-related stresses on ecosystems. Coral reefs might be capable of surviving this intensification, but suffer bleaching from high temperatures. Landward migration of mangroves and tidal wetlands is likely to be inhibited by human infrastructure and human activities. Coastal lands, in particular, are very vulnerable to major climate changes especially on seas. Particularly, heavily settled and intensified used low-level coastal plains, deltas, and islands are particularly susceptible to coastal erosion and land loss, sea flooding and barrage, especially vulnerable to coastal erosion and land loss, inundation and sea flooding, upstream movement of the saline/freshwater front and seawater incursion into freshwater lenses. Mainly at risk are large delta regions of Bangladesh, Myanmar, Vietnam and Thailand, and the low-lying areas of Indonesia, Malaysia and the Philippines. Socio-economic effects may be noticeable to major cities and ports, tourist resorts, artisanal and commercial fishing and coastal agriculture, and infra-structure development. Global studies have expected the dislodgment of several millions of people from the region's coastal zone, probably a 1-metre rise in sea level. In tropical Asia, the Himalayas are crucial to the provision of water of the continental monsoon. Augmented temperatures and seasonal variability could cause a backdrop of glaciers and increasing danger from glacial lake outburst floods. Then, a diminution of average flow of snow-fed rivers, mixed with an increase in peak flows and sediment yield, could have major effects on hydropower generation, urban water supply and agriculture. Supply of hydropower generation from snow-fed rivers can occur in the short term, though not in the long term—run off snow-fed rivers might change as well. As stated before, an increased amount economic, agriculture, and industrial resources, can affect climate, but it can put an extra stress on water. Lower level basins are expected to be most affected. Hydrological changes on island and drainage basins will be relatively low to tropical Asia, despite those relate to sea rise. The sensitivity of major cereal and tree crops, changes in temperature, moisture and CO2 concentration of the magnitudes estimated for the region has been done in many studies. One instance is the influences on rice fields, wheat yield and sorghum yield imply that any increase in production associated with CO2 fertilization will most likely be offset by reductions in yield from temperature or moisture changes. Even though climate impression may result huge changes in crop yields, storage, and distribution., the continuing effect of the region-wide changes is tentative because of varietal disparity; local disparity in emergent season, crop management, etc.( the lack of inclusion of possible diseases, pests, and microorganisms in crop model simulations); and the vulnerability of agricultural (especially low-income rural population) areas to periodic environmental hazards, such as floods, droughts and cyclones. The occurrence and level of some vector-borne diseases are anticipated to rise with global warming. Malaria, schistosomiasis and dengue, that are significant causes of humanity and morbidity in tropical Asia, are very sensitive to climate and are likely to spread into new regions on the margins of currently widespread areas as a result of climate change. Lately affected populations initially would go through higher fatality rates. According to one study, specifically focused on climate influences on infectious disease in present vulnerable regions, a growth in epidemic potential of 12-27 per cent for malaria and 31 to 47 per cent for dengue and a decrease of schistosomiasis of 11-17 per cent are expected under a range of GCM scenarios through climate change. Waterborne and water related infectious diseases, already accounting for the majority of epidemic emergencies in the area, are also expected to increase when higher temperatures and higher humidity are placed over on existing conditions and estimated upsurge in population, urbanization, deduction of water quality and other trends. Tropical Asia has an abundance of edible resources. The following section involves various edible resource plants. Bananas are the most famous members of Musa with 21 species and edible subspecies. Especially in the Mayan area, it is probably native to Southeast Asia and widely refined in the tropics. Black pepper is vine to the East Indies—made by drying the whole fruit (peppercorn); white pepper is made by first hulling the fruit, then grinding. The majority of production is in India and Indonesia; outside the region, America is a chief importer. Four of the main cultivators of this plant are capsicum annuum: cayenne pepper, sweet pepper, paprika, and jalapenos grown in temperate regions. Native to India, saffron, vanilla, and cardamom are the most expensive spices. Cashews, originally from tropical America, are a rich nut full of vitamins. Further on, cocoa/chocolate as well as the soft drink cola, is native to lowland tropical America, but is confined through the west African tropics. Citrus fruits are of the most valued fruits in tropical Asia. More than 55 million tons are sold annually, including oranges, lemons, limes, grapefruits, tangerines, and more. The largest citrus is the pummelo. The scented flower buds of cloves come from a tropical evergreen tree native to Zanzibar, Madagascar, and Indonesia. Coconuts are originally native to the Indo-Pacific area and are around every tropical area except rainforests. They can be used for oil, fruit, and fibers. Coffee, probably native to North East Africa, is grown throughout the tropics.