Dinyuan County is a national and important grain production base,the water resources supply and demand antinomy outstanding,restrict whole county economic society development,aim at the actual condition of the current water resources supply and demand,put forward corresponding measures.

Study on modification method for cultivated Land of Pingyuan county,Guangdong province;

The Development and Distribution Characteristics of Geologic Hazards in Pingyuan County and Prevention Countermeasures;

Based on investigations in 2003, analysis are given to the ancient and famous trees in the Pingyuan county.

According to the data of land use change and social-economic statistics in Ningyuan county during 1996 to 2004,the paper analyzed the driving force of the cultivated land resource s change by means of principal analysis and regression analysis.

Ningyuan County s cultural is deep, but its rate of economic development is actually slow, the question that how to transform the cultural superiority for the economical superiority is urgent to solve at present.

In Ningyuan county of Hunan province, besides Guanhua and Pinghua , there are some Tuhua .

The rare ferns in Zhenyuan county of Guizhou province;

Petrological and mineralogical characteristics of gabbro xenoliths from Mexozoic basalts in Ningyuan-Daoxian region, Hunan, show that they belong to different rock series.

It is generally thought that it was in the 25th year of the Crown Title of Daoguang in the Qing Dynasty that He Bingxun, magistrate of Huaiyuan county, started for the norhtwestern part of the county in search of the ancient site of Xiazhou under the command of Xu Song, prefect of Yulin.