Mr. Richard von Weizsacker, Former President of Germany, Mr. Helmut Schmidt, Former Chancellor of Germany, Dr. Klaus Wehmeier, Vice President of Korber Foundation, Ladies and Gentlemen, Dear Friends, Guten Tag. Good ...Mr. Richard von Weizsacker, Former President of Germany, Mr. Helmut Schmidt, Former Chancellor of Germany, Dr. Klaus Wehmeier, Vice President of Korber Foundation, Ladies and Gentlemen, Dear Friends, Guten Tag. Good Afternoon. It gives me great pleasure to meet you and speak to you at the invitation of former President Weizsacker and the Korber Foundation. Let me begin by expressing my sincere thanks to the Korber Foundation for its commitment to promoting mutual understanding between Europe and China.展开更多
Water quality of rainfall changes greatly after passing throngh trees canopy in the watershed.In this paper,an artificial mixed forest was chosen to measure the precipitation inside and outside of the forest, and stem...Water quality of rainfall changes greatly after passing throngh trees canopy in the watershed.In this paper,an artificial mixed forest was chosen to measure the precipitation inside and outside of the forest, and stemflow as well as the variations of their nutrient contents.By analysing the characteristics of rainfall partitioning ,the water qualilty,the nutrient input and cycling processes were discussed.The results showed that the concentrations of NH 4-N,NO 3-N,P,K,Ca and Mg were different among rainfall,throughfall and stemflow.In accordance with the rainfall partitioning,nutrients entered the field both as point source and area source,from which two different processes of translocation were found.The nutrient contributions in the field by rainfall and leaching from trees were also discussed.展开更多
文摘Mr. Richard von Weizsacker, Former President of Germany, Mr. Helmut Schmidt, Former Chancellor of Germany, Dr. Klaus Wehmeier, Vice President of Korber Foundation, Ladies and Gentlemen, Dear Friends, Guten Tag. Good Afternoon. It gives me great pleasure to meet you and speak to you at the invitation of former President Weizsacker and the Korber Foundation. Let me begin by expressing my sincere thanks to the Korber Foundation for its commitment to promoting mutual understanding between Europe and China.
文摘Water quality of rainfall changes greatly after passing throngh trees canopy in the watershed.In this paper,an artificial mixed forest was chosen to measure the precipitation inside and outside of the forest, and stemflow as well as the variations of their nutrient contents.By analysing the characteristics of rainfall partitioning ,the water qualilty,the nutrient input and cycling processes were discussed.The results showed that the concentrations of NH 4-N,NO 3-N,P,K,Ca and Mg were different among rainfall,throughfall and stemflow.In accordance with the rainfall partitioning,nutrients entered the field both as point source and area source,from which two different processes of translocation were found.The nutrient contributions in the field by rainfall and leaching from trees were also discussed.
