These plots are abandoned after a few years of agriculturally intensive valleys and deltas.
The core of Thailand's population is moved to another area around the river, just as Burma's is a small area nearby.
The farm focused on the Irrawaddy for 75 years.
The Red River Delta is in the far north and the Mekong Delta is in the dense vegetation.
Swidden is sustainable when population densities in the middle reaches of the Mekong River are low and when upland people control enough lowland areas to reduce the popula ritory.
The swidden system is getting more potential.
The population in Cambodia is at risk.
It is not possible to support the increased popula centered around the large lake with an unusual tion due to high birth rates and some seasonal flow reversal.
With greater population density, the lake gets more water from the Mekong drainage, but it must be shortened.
Sometimes the upland swidden system undermines the river's flow.
Another road building is presented.
Slash-and-burn agriculture is practiced in the uplands of Southeast Asia.
When done by people with low population densities, swidden is not harmful to the environment.
When large numbers of immigrants from the lowlands practice swidden, it can cause a lot of destruction.
Vietnam has recently built a highway system through its mountainous spine to aid economic development and integration of its national economy.
The movement of lowlanders into the mountains is disrupting local communities.
Upland people sometimes switch to cash crops that allow them to participate in the commercial economy when swidden can no longer support the local population.
A worker is working on a rubber tree.
South green activists argue that the Roundtable merely east Asia became a center of plantation agriculture, producing seeks to create a smokescreen, hiding inherently unsus high value specialty crops.
Southeast Asia is mostly devoted to rice commercial farms due to the clearing and draining of the lowland basins.
Labor was supplied by growers.
Most of Southeast Asia has indigenous people or contract laborers who bring in rice from preferred food sources.
Rice used to be mostly cul India or China.
The Plantations are still an important part of Southeast Asia's economy and geography.
Most of the world's natural rubber is grown in Malaysia, Indonesia, and Thailand because of economic development.
While sugarcane has been a major plantation crop in use of agricultural chemicals and high-yield crop varieties, the Philippines and e recently, along with improved water control, has allowed rice and pineapple plantations to spread in both the Philippines.
Thailand and Vietnam are two of the world's top rice exporting countries.
Vietnam has become the world's second lowest yielding country due to its lack of irrigation.
Thailand has the largest coffee grower.
The staple foods of poor people, such as sweet potatoes and manioc, have become the most important plantation crop over the past several decades.
In most parts of Southeast Asia, economic growth and declining birth rates have resulted in the reduction of the burden on food and industrial products.
Recent demographic change has been linked to health problems.
The environmental problems associated with palm oil are the same as the birth rates in Southeast Asian countries over the past several decades.
Because the region is not facing the same kind of population, governments have promoted dards for the industry.
A wide range of population policies is brought by this nonprofit organization.
In countries with a group of palm oil producers,processors, and traders, as well as food and soap manufacturing companies, and away from densely populated areas to outlying districts, there is a high degree of disparity in population distribution.
Growing and heroin production.
Several ethnic rebellions that were financed by narcotics production were defeated in 1990.
In war-torn Afghanistan, the crop surged ahead.
Drug lords and militias were eager to retain their profits as opium grew less in northern Southeast Asia.
The United States was involved.
The State Army is accused of selling amphetamines and other drugs.
The opium field in the ethnic Palaung area is being destroyed by the Liberation Army.
In the northern part of Southeast Asia, opium has been cultivated for many years.
Production declined in the 1990s and early 2000s, but has recently made a comeback.
The area devoted to opium growing in the two countries increased by 6000 acres in one year.
The two countries produced an estimated 762 metric tons of opium and generated 76 metric tons of heroin.
The majority of this production comes from the state of Burma.