Evaluation of agro-ecosystems in Karst Areas—A case study of Hechi Region of Guangxi Province;

The Qing Dynasty was a period of the sustained development of agriculture in Hehuang areas,a vast amount of land in rivers and creeks had been cultivated in the Qianglong period of Qing Dynasty.

This article probes mainly into the characteristics and cause for feudalization of Hehuang areas in Han Dyasty,and deems that carrying out the leap from the late period of primitive society to the feudal society in Hehuang areas in Han Dynasty depends on the special historical conditions and geographical circumstances at that time.

Nitrogen load from rural non-point source in river network region, Taihu Lake:A case study from Dapu Town in Yixing City;

The contribution of phosphorus from rural non-point source pollution (NPS) was investigated through studying and surveying in typical river network, Dapu town, Yixing city, for identifying and ranking agricultural non-point source pollution potential and qualification of the key factors in critical areas.

The evaluation of land sandy desertification degree in Hexi region;

The Focal Points of Strategy to Develop Hexi Region s Small Towns;

Variance tendency in the 50-year annual meteorological and hydrological series of Hexi region of Gansu Province;

A case study on disastrous weather process in Hetao area in 2006;

Seismic facies and sedimentary facies of the Pleistocene of Quaternary in Huhe Depression of Hetao area;

On the Cultural Types Of Hetao Area In The Qin And Han Dynasties