THE TYPES OF ECOLOGICAL DISASTERS IN THE JOINT AREAS OF SHANXI,HEBEI,SHANDONG AND HE''''NAN PROVINCES AND ANALYSIS OF THE CAUSES OF THE DISASTERS
晋冀鲁豫接壤区生态灾害及灾情评估研究

The econimic development in the joint areas of Shanxi,Hebei,Shandong,and He'nan Provinces play an important role in the economic development strategies which our country will shift the center of development from the east to the west.However,one of the important factors that restict the economic development in the joint areas is the ecological disasters.After classifying the types of disasters,analyzing the causes of disasters,and assessing on the severity of each types disasters,the main types of disasters which had larger influences of the economic development in this areas than other types were indentified so that the measures can be taken to improve the eco environmental qualities and develop the economics.