Preface Liu Changming Ⅰ.Research Direction of Hydrogeography Hydrological study for the 21st century:Prospect and key issues Liu Changming The reviews and prospects for geographical hydrology Yang Wu Suggestions on hydrogeographic research in China for the 21st century Hou Yuguang Ecotones——a concept to be gazed at by hydrologists Liu Suxia,Mo Xingguo et al. Ⅱ.Regional Hydrology Preliminary study on flood damage in China Tang Qicheng,Li Xiuyun et al. The advance of the water-heat flux experimental study on agroecological system in China Xie Xianqun The function evaluation of the Jianghan Lakes Group Jiu Boxin The assessment on the potentiality of development and utilization for rainfall resources in Beijing Area Mu Haisheng A study on macro-scopic hydrogeomorphological relations in different natural zones of China Xu Jiongxin Research on cold region hydrology in China Yang Zhenniang The water resources and the development of sustainable agriculture in the North China Plain Yu Fenglan A study on water-salt movement for drip irrigation in sandland and its benefits Feng Qi,Gao Qianzhao et al. Groundwater resources in Western Canada Zhou Naicheng,Liu Shuiqin Ⅲ.Agricultural Hydrology,Landscape Hydrology,and Urban Hydrology Agriculture hydrology research and agricultural sustainable development Wu Kai,Yao Chengwei et al. The effects of soil on crop water supply Luo Yuanpei,Yang Peiling et al. Water-saving agriculture is the key to the sustainable development of economy in Northwest China——Discussing about the potentiality of economizing water in agriculture Shao Qingshan,Liu Donghui The water resources characteristics in the Loess Yuan Area and“water-storing,-transfering,-filling”model for agricultural use——Taking the Nanxiaoheguo Valley in East Gansu Province as an example He Shaohua Research on the sighting water resources Li Peicheng,Xue Huifeng The hydrological aspects in scenery studies Shao Qingshan Research on the human tourist affairs and the water landscape Xue Huifeng Water environment and realigning way of the Suzhou Creek Chen Kexin Ⅳ.Environmental Hydrology Irrigation using diverted water and secondary salinization of soil——Taking the Huang-Huai-Hai Plain as an example Xu Yuexian The research on the irrigation diverting water from the Huanghe River and its environment effect in the Shandong reach of the river Wu Kai,Xu Yuexian Drought types and division of effecting environment Li Boqing,Wei Zhongyi Slope erosion and soil lossing in Sichuan Province Hou Yuguang The scenic value of water environment in the Daye Lake and impact of water pollution on fishing economics Deng Zhaoren The problems of water resources and water environment in the central section of Liaoning Li Ran,Liu Qingshu Ⅴ.Hydrologic Modeling The chaotic properties of flood variation and its prediction based on a phase space Ding Jing,Deng Yuren et a1. Water evaporation model in the Taihu Lake Mao Rui The character of soil lossing of the weathered layer and the soil erosion model in the purple rock area in Guangdong Province Liu Meinan,Shen Tsanshin et al. Study on Penman Formula and its revised model Bian Yuming,Zhu Yingqing The application of grey system theory in forecasting drought in Baoding Hong Dengming Geographical databases,information system and hydrological models Liang Jiyang Study on prediction model of rainfall in Beijing Area Mu Haisheng Research on the field water transformation for winter wheat and summer maize with a soil layered water budget model Gong Yuanshi,Lu Jinwen