Taking Ji river demonstration zone as a study area in Tianshui city Gansu province, this paper analyzed the sensitivity of the improved regional soil erosion model.

Agricultural standardized demonstration area could be developed active roles with every departments coorperating each other, standardized management was inexorable means during developing agriculture.

In order to understand the influence of land use on soil fertility changes in Kenfu demonstration area of environmental immigrants, some studies were made on soil nutrients of demonstration area.

The paper preliminarily analyses the connotation and construction significance of circular economy demonstration area.

Research on system efficiency of pumping unit wells in demonstration areas of Qinghai Oilfield;

 Water and soil conservation project in Jiuyuangou demonstration areas in the Yellow River is a typical small watershed located in the hilly-gully areas on the Loess Plateau.

The paper associates the construction of a demonstrating uptown which is built with a new structural system of multi\|ribbed wall slab with light\|weight outer frame, mainly introduces the production techniques, installation and connection procedures of the multi\|ribbed wall slabs, and summarizes and briefly analyzes the management of a construction site and the construction cost.