Forest Culture and Its Development during Chinese Different Historical Periods;

Evaluation of the channels in the middle reach of the Yangtze River and intensification of floods in its historical period;

Statistical properties analysis of flood and drought calamities in historical period of Hubei Province;

Studies on the relationship between water environment and horticulture of Ji'nan city in different historical periods:taking its Spring Lake as an example

Desert is originated from the geology period and developed in each of human historical periods.

The population and environment of Hubei in historical times;

The Differentiation between She (Moschus) and Zhang (Hydropotes inermis) in China during the Historical Times;

In historical times,“Cha Hua” mainly concentrated on the boundaries between different provinces, prefectures and counties in the southwest of China, which i.

The novel takes the life of Stan as clue,sets on the base of Historical Time and Existential Time,mixes the philosophic reflecting on life in the novel narrative,reveals the philosophic implications of conceptions,such as "rift","death" and so on,and explores the meaning of life.

At the same time,the time of plot is comparable with the concept of Christian time on both aspects: historical time and Christian time.

When a state of "harmony between nature and I" is reached in the poet s aesthetic experience, his emotional experience enables him to transcend material object, personal affection, historical time & space, approaching a communication between personal soul and human history.