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发布时间:2016-12-11 19:11

  本文关键词:干旱区绿洲农业生态经济系统的结构和功能分析——以塔里木河上游的阿克苏地区为例,由笔耕文化传播整理发布。


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upper reaches of tarim river

  • 塔里木河上游(10)
  •   

         Analysis on the Utilization Efficiency of Water Resources in the Upper Reaches of Tarim River, Xinjiang

         塔里木河上游水资源利用效率分析

    短句来源

         Structure and Function of Agriculture Eco-economy System in Arid Area Oasis——Take Aksu Area at Upper Reaches of Tarim River for Example

         干旱区绿洲农业生态经济系统的结构和功能分析——以塔里木河上游的阿克苏地区为例

    短句来源

         Profit and loss analysis on ecological value in upper reaches of Tarim River under land use changes

         塔里木河上游土地利用变化中的生态价值损益分析

    短句来源

         Based on the TM images of 1990 and 2000,this paper analyzed the land use changes in Akesu-Awati oasis at the upper reaches of Tarim River,and,with the equivalent weight factors of ecosystem services,estimated the ecological value under these changes.

         利用1990和2000年2期TM影像,对塔里木河上游典型绿洲的土地利用面积变化进行了研究,在土地利用变化背景下,通过货币化生态服务功能,揭示塔里木河上游典型绿洲生态价值的变化。

    短句来源

         Analysis on Landscape Change and Estimation on the Ecological Valuation of Typical Oasis in the Upper Reaches of Tarim River

         塔里木河上游典型绿洲景观变化分析及其生态价值损益估算

    短句来源

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         The Dynamics of Land Utilization inthe Upper reaches of Tarim River

         塔里木河干流上游土地利用动态变化研究

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         On the Upper Reaches of Money Laundering

         论洗钱罪之上游犯罪

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         On Industrialization of Farming in the Upper Reaches of the Yangtze River

         论长江上游地区农业产业化

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         the type of supplier seeking profit from the upper reaches;

         从上游供应商寻求利润型;

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         Prevention Countermeasures in the Upper Reaches of Min River

         岷江上游生态环境治理对策探讨

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         Population characteristics in upper reaches of Minjiang River

         岷江上游人口特征

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    The regularities of water transform in stream forming area and disappearing area are quite different. In stream forming area, water transform is mainly that groundwater flows out to form surface water. And in stream loss area, water transform is mainly that surface water seeps into ground. At the perimountain plain, when the transform of surface water-groundwater- surface water finishes, it may begin the second transform if there is a structural basin in the lower reaches of rivers. However, water...

    The regularities of water transform in stream forming area and disappearing area are quite different. In stream forming area, water transform is mainly that groundwater flows out to form surface water. And in stream loss area, water transform is mainly that surface water seeps into ground. At the perimountain plain, when the transform of surface water-groundwater- surface water finishes, it may begin the second transform if there is a structural basin in the lower reaches of rivers. However, water becomes less and less after the process of transform. Effect of water to environment can be divided into two types, natural effect and human effect. The changes of natural conditions need a long time of geological period. The influences of human activities take place in a short time and regionally, especially in arid land where water is the key factor of environment. Hydrological changes in Xinjiang are mainly that: part of river courses has been replaced by artificial canal system; some lakes are replaced by reservoirs; and water table has changed. Located at the upper reaches of Tarim River, Afar irrigation area is reclaimed after 1958. With the expansion of irrigation area after land reclaiming, much of water seeped into ground from canals and farmland to feed groundwater. Seasonal change of water table is based on irrigation periods. Mineralization of groundwater has reduced but most of the drained water flows into rivers or lakes, river water quality has changed too. The redistribution of water is mainly that: water quantity has been improved within oases, but runoff in the lower reaches has reduced. Alar irrigation area is the largest new oasis with stable agricultural eec-environment in Tarim Basin since the redistribution of water resources. Hydrological and climatic conditions are improved within the oasis.

    新疆的水平衡特征是,径流形成于山区,流到平原区后不断蒸发和渗漏,最终消耗在沙漠中,,或者流入尾闾湖。由于人类活动的影响,水的分布和转化都发生了改变,绿洲中的水量增加,但绿洲以外与河流下游的水量减少,同时有些湖泊缩小甚至干涸,沙漠化发展,自然植被衰退,自然环境退化。

    Most of the groundwater in mountain area is transferred to ground surface as the runoff in Xinjiang.Groundwater at plain area mainly comes from infiltration of river water,lakes,canal system,reservoirs and irrigation.And 78.5% of it is seeped river water.Infiltrating water in agricultural area is caused by human activities,which has changed the water table and groundwater quality to a great extent,and changed the movement process of groundwater. \ \ Alar irrigation area established in 1958 located...

    Most of the groundwater in mountain area is transferred to ground surface as the runoff in Xinjiang.Groundwater at plain area mainly comes from infiltration of river water,lakes,canal system,reservoirs and irrigation.And 78.5% of it is seeped river water.Infiltrating water in agricultural area is caused by human activities,which has changed the water table and groundwater quality to a great extent,and changed the movement process of groundwater. \ \ Alar irrigation area established in 1958 located in the upper reaches of Tarim River.It has increased the quantity of water within the area and caused the rise of groundwater to draw water from river for irrigation.Irrigation and drain water away to wash salt in the soil have improved groundwater quality in the oasis,but the surface water in Tarim River has mineralized because it takes up salt water drained from farmland.Not only the water table in oasis had gone up,but also it varies obviously in different seasons.It is 1.5 ̄2.0m higher in summer than in winter,and it would rise for 0.2 ̄0.5m after each irrigation. \ \ The decline of water table out of oasis has caused the decrease of soil moisture so that the ground surface is quite dry and part of the natural vegetation has died,and the weather with floating dust has increased after 1980. \ \

    本文分析了新疆地下水的转化规律,特别是平原区地下水的补给关系。对塔里木盆地阿拉尔地区开垦后的地下水变化特征和人类活动对地下水的影响做了重点分析。结果表明人类活动改变了水资源的分布状况,使绿洲内部地下水位上升,水质改善;但绿洲以外地下水位下降,河流由于接纳了绿洲排水,水质变差。

    Water resources are becoming more and more shortage in Tarim arid region. So it is important to control the expansion of land reclamation and enhance the efficency of water resources utilization in upper reaches of Tarim River. It is also significant for the development of Tarim region to resolve the conflict between agricultural using water and ecological using water. Remote sensing technology is the best way to analyze the dynamics of land use. In this paper, the author discussed the dynamics...

    Water resources are becoming more and more shortage in Tarim arid region. So it is important to control the expansion of land reclamation and enhance the efficency of water resources utilization in upper reaches of Tarim River. It is also significant for the development of Tarim region to resolve the conflict between agricultural using water and ecological using water. Remote sensing technology is the best way to analyze the dynamics of land use. In this paper, the author discussed the dynamics of land use in typical region-Alaer(K-44-127,1∶100,000) by using the aeronautical maps and satellitic maps which were made in 1959,1983,1992 and 1996. The results showed that in this region the artificial oasis and residential area were enlarged step by step. On the contrary, the area of natural vegetation shrank year by year. As for the other land using types, the area of lakes decreased quickly and the area of usless land types has no great change for these years, e.g. the desert and the salina. Therefor the local goverment should strictly control the enlargement of land reclamation in upriver of Tarim River in order to save the lower reaches of Tarim River. And at the same time, we should strengthen the construction of vegetation to improve the ecological environment.

    在干旱区 ,水资源十分匮乏。若能有效的控制塔里木河上游耕地面积的扩张 ,同时提高水资源利用率 ,则能解决塔里木河流域长期以来农业用水和生态用水之间的矛盾 ,这对塔里木河流域持续发展有重要意义。应用遥感技术进行上游土地利用动态变化则为上游耕地现状和趋势发展提供一种快速和准确的方法。本文利用 1 95 9年、1 983年、1 992年和 1 996年四个时期的航片及卫片资料 ,研究了塔里木河干流上游典型图幅土地利用的动态变化。结果表明 ,研究区域人工绿洲和居民点面积逐年扩大 ,湖泊面积明显缩小 ,而天然植被面积趋于缩小 ,难利用面积变化不大。为此 ,有关部门应严格控制目前这种耕地继续扩张趋势 ,同时加强植被生态环境建设

     

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      本文关键词:干旱区绿洲农业生态经济系统的结构和功能分析——以塔里木河上游的阿克苏地区为例,由笔耕文化传播整理发布。



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