STUDY ON THE MOVEMENTS OF DISSOLED ELEMENTS ACCOMPANIED RAIN AND THE FORMATION OF STREAM WATER QUALITY IN A FOREST ECOSYSTEM

9. 研究结果总结：本研究的主要调查内容；以下三个主题：1。通过对杉柏立地和落叶阔叶林优势栎树的调查，发现到达森林地面的水量减少了80%左右，水质变化较大。由于提供给森林生态系统的降水被林冠截留。指出了林下植被的重要性。通过分析树木冲刷淋滤的两个主要原因，分离出了湿沉降、干沉降和冠层所增加的离子量。为了阐明土壤系统中土壤水质的变化规律，采用ier方法研究了森林土壤中水溶性碱性阳离子的形成动态。氮化对土壤水质的影响。3河流水质的形成。为了阐明河流水质形成的机理，研究了修剪和间伐对河流水质形成的影响。研究了降水量与河流水质之间的关系，河流水质是森林生态系统中主要的水系，通过土壤层和透明物质的吸附和淋滤，保持了森林生态系统中水溶性碱阳离子的物理化学平衡

9. SUMMARY OF RESEARCH RESULTSTHIS STUDY WERE INVESTIGATED CONCERNINC ; THREE SUBJECTS AS FOLLOWS.1. VERTICAL CHANGES OF DISSOLVED ELEMENTS ACCOMPANIED WITH THE MOVEMENT OF RAIN WATERIT BECAME CLEAR THAT WATER AMOUNT ARRIVED TO FOREST FLOOR DECREASED ABOUT 80 % AND WATER QUALITY CHANGED GREATLY BY THE INVESTIGATION OF JAPANESE CEDER- CYPRESS ESTABLISHED AND DECIDUOUS BROAD LEAVED STAND DOMINANT OAK.BECAUSE OF PRECIPITATION SUPPLIED TO FOREST ECOSYSTEM WAS INTERCEPTED BY FOREpST CROWN.IMPORTANCE OF UNDERGROWTH WAS POINTED OUT TOO.AMOUNTS OF IONS INCREASED BY THROUGHFALL WERE SEPARATED WET DEPOSITION, DRY DEPOSITION AND CANOPY BY THE ANALYSIS TWO MAIN CAUSE OF WASH AND LEACHING FROM TREE2. WATER QUALITIES FORMATION IN A SOIL THE DYNAMICS OF WATER SOLUBLE BASE CATIONS IN A FOREST SOIL WERE INVESTIGATED BY THE IER METHOD IN ORDER TO CLARIFY THE CHANGES OF SOIL WATER QUALITIES IN A SOIL SYSTEM.THE EFFECTS OF NITROGEN MlNERALIZATION ON THE SOIL WATER QUALITIES TOO.3 WATER QUALITIES FORMATION IN A STREAM.THE EFFECTS OF PRUNNING AND THINNING ON THE WATER QUALITIES FORMATION OF STREAM WERE INVESTIGATED TO CLARIFY THE MECHANISM OF WATER QUALITIES FORMATION.THE RELATIONSHIPS BETWEEN THE AMOUNTS OF PRECIPITATION AND STREAM QUALITIES WERE STUDIED TOO STREAM QUALITIES THAT ARE MAIN WATER ROUTE IN A FOREST ECOSYSTEM ARE KEPT THE PHYSICOCHEMICAL BALANCE BY THE ADSORPTION AND LEACHING WATER-SOLUBLE BASE CATIONS IN A PASS THROUGH THE SOIL HORIZON AND PEARENT MATERIALS