This paper places stress on the color designing in Southern hot regions from the combination of theory and practice.

This paper stresses on the architectural color designing in southern hot regions from the combination of theory and practice.

The characteristic of the fresh air cooling load in cooling ceiling air-conditioning system of hot and humid area is analyzed,according to the weather parameter of Guangzhou,and the conclusion shows that more than 90% of the fresh air cooling load is moisture load in summer.

The fresh air cooling load in hot and humid area is analyzed.

Assessment and classification of biodiversity hot spots of west China is a basic work in the construction of nature reserve at west China.

In hot spots where users need high speed data services operators can deploy low-cost high-speed WLANs,e.

All this is the universally acknowledged geographical background of the hot spots.

A survey was made of the resources of wild bananas which represent all species of the genus Musa in the tropical area of Yunnan Province, China.

This paper gives an analysis and discussion on the research status and trends of land degradation in the world and the land degradation problem of the tropical area in China, also proposes a strategy of controling the land degradation and executing the sustainable development.

This paper analysed the situation and problems of agricultural residue utilization in tropical area,and bringed forward the strategies.