Comprehensive division indexes were chosen according to climatic conditions for Navel orange growth and landform conditions in Xunwu.

Water environment of Xunwu county influences directly the water-consumpting quality of the middle reaches and the lower reaches fields of Dongjiang River and Hongkong for daily life.

Abnormal characteristic of seismicity before the Xunwu earthquake in 1987 and some discussions;

In this paper, according to the geological background two sets of different source data are selected and two different time functions-gray prediction models are built, and then the gray topology analysis method are applied to the analysis on the Xunwu earthquake with MS55 on August 2,1987.

Since "The Investigation of XunWu"reflected the courtryside s society of the central SuQu during the period of the land revolutionary ,It preserves many rich social,political and economic data of that time which has the great research value to Hakka s soci.