Heidashan area in Eji'naqi of Inner Mongolia is located in Sb mineralization perspective area of Beishan,and its ore-forming geological conditions are very favorable.

In this paper we use tree rings of Populus euphratica to reconstruct past climate and hydrology variations in Ejin which is located in the northwest part of Inner Mongolia.

Measuring Total Economic Value of Restoring Ejina Banner's Ecosystem Services ──Application of the Non-Parametric Estimation;

Screening and evaluation of agricultural specialty industries in Ejina Banner located in the lower reaches of the Heihe River;

Study about the dynamic change of the pressure on the cultivated land in Ejina Banner;

Determination on Water Movement Parameters in Populus Euphratica Roots of Ejina County——by Richard Equation and Atmospheric Data;

Study on Population Distribution and Environment Population Carrying Capacity of Ejina County;

A Test Study of Ecological Construction of Artificial Oasis in Ejin Banner, Inner Mongolia;

Establishment of Tree-ring Chronology and Response Analysis in Past 100 Years for Ejin Banner, Inner Mongolia;

Hydrogeochemistry of Shallow Groundwater in Ejin Banner, Inner Mogolia;