System Including Typical Agricultural Ecological Engineering in Tropical Areas of China:Analysis of the Major Indicators of Existing System of Rubber-Tea-Chicken Agro-Forestry Model

The rubber-tea-chicken eco-agricultural model——a typical tropical agricultural ecological engineering in Wenchang municipality of Hainan Province was introduced systematically. On the basis of dividing the model developing stage, the changing trends of the major social, economic and natural factors of the system in different stages were analysed. Results showed that the material input and output structure, peasants income structure economic structure and rural environment of the system were improved. The development of natural resources was strengthened and rural economic benefit was increased. Thus, the system development has close relationship with the ecological engineering construction.