As urbanization goes fast in China, the demand of land resources is far beyond its supply. One of solution is to reform village-in-city, to extensively use land and to increase the land utilization efficiency, in line with governmental policies. This paper, based on a case study on Kunming city, applies the construction land standard per capital and GIS data as indexes to estimate the land-saving potential to reform the village-in-city, with the results that the lands have been increased by 1792.79 hm ² and 1288.87 hm ² inside  and outside urban planning zones, respectively. This method is of significance to improve the land extensive utilization efficiency.

Bauxite deposits have been recently discovered in south-western Tianshan, such as Beishan bauxite deposit in Wushi county, Qiaokemoke bauxite deposit in Wuqia county. The discovery not only is helpful to resolve the uneven distribution of mineral resources, and but also stimulate the electrolysis aluminum industry based on the sufficient local coal and power. This paper summarizes the metallogenetic system of bauxite deposits and mineralization conditions, presents that bauxite deposits can be formed, regardless of rock types, under a favorable environment. The paleogeography plays a key role in the formation of bauxite deposits. The bauxite deposits in the southwestern Tianshan are the Carboniferous clastic sedimentary deposits on the paleo-weathered crust.

The black soil region as a vital crop area plays a key role in guaranteeing Chinese crop safety. Currently, the black soil region is facing some problems such as soil erosion and degeneration which largely affect the production capacity. The problems stem from two factors, natural and human, but the latter one is the major. This paper analyzes the natural causes and human causes, and presents some approaches to the black soil degeneration, as of significance to protect the black soil and enhance crop production.