Study on Climatic Zoning for Wine-grape Growing in Huabei Regions Study on Climatic Zoning for Wine-grape Growing in Huabei Regions Response of Fluorescence Parameters in Detached Leaves of Several Tree Species in HuaBei District to Drought Stress Activities of an Oil Degrading Bacterial Strain HB-2 Identification of Polyphasic Taxonomy for a Chelatococcus sp. HB-4