Design and construction of frost－ resistant measures for water structure in Zhenlai irrigation area;

Forecast of Land Desertification in Northern Jilin Province of China——Taking Zhenlai County as Example;

ANALYZING ON THE EFFECT OF LAND USE CHANGE ON ECO-ENVIRONMENT IN THE ECOTONE BETWEEN AGRICULTURE AND ANIMAL HUSBANDRY IN NORTHEAST CHINA ──A Case Study of Zhenlai County;

Zhenlai county in Jilin Province is taken as a typical area to explore the universal land use pattern under ecological security in ecotone between agriculture and animal husbandry in Northeastern China.

The environmental impacts of Wujiazi irrigation on the low plain in Zhenlai County were analyzed,which showed that the irrigation project may increase the groundwater level in the irrigation area,mitigate water shortage,and meliorate the soil salinization in this area.

Protection for habitat security of biological resources in wetland of Dalaihu Natural Reserve;

Seasonal Diet of Wolves in the Dalaihu Natural Reserve,Inner Mongolia;

Observation on Breeding Behavior of Mute Swan in Dalai Lake Nature Reserve;

Distribution,Migration and Protection of Cygnus olor——A Case Study in the Dalai Lake Nature Reserve

Dalaihu nature reserve,situated on the border of China,Russia and Mongolia,with an area of 7 400 km~2,is the impor- tant passage and breeding habitat of migratory birds of Northeast Asia.

Diet composition of Raccoon Dog(Nyctereutes procyonoides)was checked by analyzing 130 Raccoon Dog dung collected from August 2007 to July 2008 in the Dalaihu Nature Reserve,inter Mongolia China.