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hydrological behaviors
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  水文行为
     A COMPARISON OF HYDROLOGICAL BEHAVIORS OF FOREST AND GRASSLAND WATERSHEDS IN GULLY REGION OF THE LOESS PLATEAU
     黄土高原沟壑区森林和草地小流域水文行为的比较研究
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     This paper discusses the water bearing medium types,karst water types,hydrological behaviors,hydrochemistry and dicharge of karst water,as well as river valley hydrodynamics of Chinese southern and northern natural karst areas.
     通过对比分析,论述我国南北方两大“自然喀斯特区”的含水介质类型、喀斯特水类型、水文特征、喀斯特水的排泄、水文化学以及河谷水动力特征等问题。
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  相似匹配句对
     Dyeing behaviors of C.
     在弱酸性染浴中测试了 C.
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     The behaviors of aphid
     谈蚜虫的行为
短句来源
     A COMPARISON OF HYDROLOGICAL BEHAVIORS OF FOREST AND GRASSLAND WATERSHEDS IN GULLY REGION OF THE LOESS PLATEAU
     黄土高原沟壑区森林和草地小流域水文行为的比较研究
短句来源
     Research on hydrological regionalization
     水文区划问题研究
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     The Development of Hydrological Model
     流域水文模型研究的进展
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This paper discusses the water bearing medium types,karst water types,hydrological behaviors,hydrochemistry and dicharge of karst water,as well as river valley hydrodynamics of Chinese southern and northern natural karst areas.Karst hydrogeologic and engiceering geologic issues of China should be studied in consideration of the existence of and difference between the two natural karst areas.

通过对比分析,论述我国南北方两大“自然喀斯特区”的含水介质类型、喀斯特水类型、水文特征、喀斯特水的排泄、水文化学以及河谷水动力特征等问题。由于两大“自然喀斯特区”的存在,在宏观评价各类喀斯特水文工程地质问题时,对该两大“自然喀斯特区”的各自特点应引起注意

In order to investigate the hydrological behaviors of forest and grassland watersheds,a comparative analysis of water balance elements on two experimental watersheds in the gully region of the Loess Plateau was made.The quantitative results of the model applied and observed data confirm that the depth of annual runoff in the forest watershed is less than that of the adjacent grassland on condition that cover degree of both is the same,the amount of evaportanspiration in forest watershed is higher than...

In order to investigate the hydrological behaviors of forest and grassland watersheds,a comparative analysis of water balance elements on two experimental watersheds in the gully region of the Loess Plateau was made.The quantitative results of the model applied and observed data confirm that the depth of annual runoff in the forest watershed is less than that of the adjacent grassland on condition that cover degree of both is the same,the amount of evaportanspiration in forest watershed is higher than that of the grassland,and soil water storage in the three meter horizon is less than that of grassland.So we consider that forest cover strengthens the processes of water vertical circulation,and weakens that of the hydrological cycle,and reduces soil water content.A practical suggestion about forest development in this region is also given in this paper.

分析了黄土高原沟壑区森林小流域和自然草地小流域的水文效应,并利用实测资料和模型计算结果比较了两流域的水循环特点,结果发现在郁闭度相同的情况下,森林小流域较自然草地小流域有较小的径流量、较大的蒸散量和较低的3m土层平均含水量,也就是说森林的覆盖增强了水分小循环,削弱了水文大循环,并导致土壤含水量降低。同时也发现森林的上述水文效应仅当其郁闭度达到一定程度时才能表现出来。通过比较两类生态系统植物生长的土壤水分环境条件和水分利用率,认为黄土高原沟壑区在大力发展林业时应以沟谷为主

The author discusses the connotation and development of the research on the water movement and its regional change regular in agro-ecosystem of north China in this paper. That is the established the mechanism of water balance and water cycle process in agro-ecosystem, the model of crop productivity in limited water environment condition of north China by means of the combined field experiment and network study of water movement and exchange regular in agro-ecosystem, and gives the evaluation for water movement...

The author discusses the connotation and development of the research on the water movement and its regional change regular in agro-ecosystem of north China in this paper. That is the established the mechanism of water balance and water cycle process in agro-ecosystem, the model of crop productivity in limited water environment condition of north China by means of the combined field experiment and network study of water movement and exchange regular in agro-ecosystem, and gives the evaluation for water movement and productivity sustainable development and its regional change regular in agro-ecosystem of north China.The research results in this project were shown as following: (1) The water consumption and requirement regularity of main crops in different regions of north China and the corn production model under dynamic optimal management of water and fertilizer supply were got. (2) A comprehensive agro-ecosystem management model also was got. (3) The potential evaporation in north China has a regional increasing character from east to west during the period of 1961-2000 and it also has an obvious decreased trend from 1990 years. (4) The soil desiccation happened in the entire soil profile is a direct cause of the yield fluctuation for high-yield field. (5) The comparison of hydrological behaviors of forest and grassland watersheds in gully region of the Loess Plateau pointed out that, the depth of annual runoff in the forest watershed is less than that of the adjacent grassland on condition that cover degree of both is the same, the amount of evapotranspiration in forest watershed is higher than that of grassland, and soil water storage in the three-meter horizon is less than that of grassland.

概述了国家自然科学基金重大项目“我国北方地区农业生态系统水分运行及区域分异规律研究”的内涵及初步研究进展 ,提出要通过对我国北方地区农业生态中水分运行和转换规律的综合田间试验及联网研究 ,确立北方地区农业生态系统水平衡、水循环过程的机制 ,确立北方地区有限水环境下作物生产力模型 ,对北方地区农业生态系统中水分运行与农业可持续发展及其区域分异规律作出评估 ,研究给出了我国北方地区主要作物的耗水、需水规律 ,夏玉米的水肥优化耦合模式和农田生态系统综合模型 ;获得了近 4 0年来我国北方蒸发潜力自东向西逐渐递增的空间变化和自90年代以来北方部分地区潜在蒸发有明显下降趋势的时间变化特征 ;得出了黄土高原旱作高产农田土壤干燥化是高产田产量产生波动性的主要原因 ,比较了森林和草地的水文效应差异 ,指出在郁闭度相同的情况下 ,森林小流域较自然牧草小流域有较小的径流量、较大的蒸散量和较低的 3m土层平均含水量

 
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