关键词: 油桐[49GG], 防护林[49GB], 经营对策, 林粮间作[49GD], 经济效益

Abstract: The reasons of the decline of tung tree prodnction is analysed based on the general investigation in the main area where tung trees are distributed. It is pointed out that economical factor is the key which hinders the development of tung tree. Five management groups(or types) of tung forests or communities were classified according to the properties of tung tree communities. And also the management measures are suggested for improving the protection function and raising the economical effects of the tree.

Key words: TUNG OIL TREES, SHELTER-FORESTS, MANAGEMENT MEASURE, ECONOMICAL EFFECT, COMBINATION OF FOREST AND GRAIN PLANTS