The international common rules of agricultual land and water use for the global environment conservation and for the world food production.

1.现状分析：(1)农业和土地利用的特点是通过各地区的自然和社会条件形成的，它们在自然界中产生了特定的物质和能量运输。2.区域特征的厘定：作为未来改善土地和水资源利用的措施，指出(1)干旱地区需要建设灌溉排水设施、输水系统和农田用水方法；(2)多雨的热带地区需要进行土壤/土层的物理和化学改良和管理，(3)排污量变化较大的土地需要设置稳定取水设施；(4)寒冷地区的泥炭地区需要排水、土壤覆盖和深层混合耕作。3.达到阶段的比较：分析了未来土地复垦只有在南美洲是可行的，…非洲和澳大利亚较多，一期开发水资源10吨，二期水资源20吨。有人指出，(1)需要详细分析用水形式，(2)用水效率在很大程度上取决于共同同意和用水者之间的合作，4.区域间和国家间未来形势模拟：利用遥感/地理信息系统数据模拟确定海水上升点的变化，估算土地退化与土地利用变化的关系。预测通过改进新的土地复垦工程，未来农业地区的气体排放可控制在目前水平的4倍以下。5.共性规律的研究：阐明了全球环境保护的土地可持续利用模式和区域规划方法，并提出了发展HUDO技术。其中保持了自然与工程、习俗与文明、农业与科技之间的平衡。较少

1.Analysis of the present situation : It was concluded that(1)the characteristics of agriculture and the land and water use were built up through the natural and social conditions of each regions and they arose the specific transport of mass and energy in nature.2.Clarification of the regional characteristics : As measures to improve the land and water use in future, it was pointed out that(1)the arid areas need the construction of facilities for irrigation and drainage, the water conveyance systems and the water application methods for fields, (2)the rainy tropical areas need the physical and chemical soil/soil layr improvement and management, (3)the land which discharge were greatly changed needs the installation of facilities to stabilize the water intake from river, (4)the peat areas in a cold regions need drainage, soil dressing, and deep mixing tillage.3.Comparison of the attaining stage : It was analyzed that the land reclamation is feasible in future only in the South-america, … More Africa and Australia, and there is water resources 10Ttons in the first stage of development and 20Ttons in the second stage. It was pointed out that (1)it is required to analyze the form of water use in detail, and (2)the efficiency of water use strongly depends on a common consent and on a cooperation between water users, between regions and between nations.4.Simulation of the future situation : It was simulated to to decide the change of point where salt water flows up from sea and to estimate the relations between land degradation and the change of land use using the data of remote-sensing/GIS.It was predicted that the gas emission from agricultural areas can be restrained less than four times of the present level in future through the improved new land reclamation works.5.Search of the common rules : As conclusion, it was clarified that there are much possible models of the sustainable land use and methods of regional planning for the conservation of global environment, and proposed to develop the Technology of HUUDO,in which there keeps the balance between nature and engineering, between custom and civilization, between agriculture and technology. Less