A comparative study on seasonal variation of ~7Be concentrations in surface air between Mt. Waliguan and Mt. Guanfeng;

Study on seasonal variations of asphalt pavement responses;

Study on seasonal variation of nutrient elements concentration and accumulation in different organs of apple tree;

The quantiative seasonal changes of carbohydrate、lipoid and protein of Dahlgren cells in the caudal neurosecretory system of Carassius auratus;

Study on seasonal change of calcium concentration and accumulation in different organs of apple tree

The supply and demand situation, lifecycle, business cycle, and seasonal change of consumption of Chinese PE products were reviewed.

With the aid of the Global Positioning System (GPS), present status of nitrogen and phosphorus pollution in water bodies in the high and low water periods of twelve rivers and three lakes in Changshu region was investigated, and seasonal variations of concentrations of nitrogen in different forms in the surface layers of the water bodies were researched.

The seasonal variations in water and sediment discharges affect the distributions of annual runoff and sediment discharge.

The species and seasonal changes of Papilionidae in Qiongshan region;

The seasonal changes of plants' rhizosphere and non-rhizosphere microorganism in the desert riparian forest

The results showed that the carotenoids contents showed a considerable seasonal changes,and the highest content was about 17.