Late Permian submarine fan turbidites are well developed in the Laibin-Heshan area and are particu-larly well exposed in the Matan and Penglaitan sections along the Hongshui River.

Solution for drought disaster of Laibin city;

As one of the essential industry of Laibin city,the economic tree resources play an important role in the building and construction of a green ecological city.

Laibin town of Xuanwei city was puzzled by a series of economic and social problems such as low income of households and limited employment opportunity, it was quite urgent to develop local economy, increase employment opportunity, and cultivate new economic increasing point.

Monsoon climate,karst environment,regional deforestation and ineffective irrigation system have been considered four reasons to be responsible for the regional drought in Laibin county.