This composite project, widely known as the Three-River Project, zeros in on the areas around the middle reaches of the Yarlung Zangbo and its two tributaries6the Lhasa and Nyangqu rivers. It is the largest project both in terms of scale and investment. Affected will be 65,700 square kilometers,18 countries under the jurisdiction of Lhasa, and Shannan and Xigaze prefecture, home to 36 percent of the Tibetan population. In 10 years beginning in 1991, 1 billion yuan will be invested towards building the area into a production base for commodity grain, animal by-products, light industry and food processing. The area will also serve as an outpost for the demonstration and popularization of technologies new to the area. Water conservancy projects, improvement of low- and medium-yield fields and pastureland and afforestation will be used to create a solid agricultural foundation and a fine ecological environment by the end of the century, realizing the targets of 150 million kilograms of grain and 24 million kilograms of meat in increased production capacity. The cross-century project will involve 800,000 people and 40 construction projectiles, 18 involving water conservancy, 7 agriculture, 10 animal husbandry and 5 forestry. The projects' completion will benefit 100,000 hectares of cultivated land (about 45.6 percent of Tibet's current total), and 4.5 million hectares of grassland. In addition, 28,700 hectares will be planted with trees and total generating capacity raised to 250,000 kw. First results are already apparent. Output of grain in the development area has risen 11.9 percent, meat 20 percent and farmers herdsmen's income 16.2 percent over the period.