水资源紧缺限制了干旱半干旱地区农业生产。
Shortage of water resources restricted agricultural production in arid and semiarid region.
中国西部干旱半干旱地区约占全国土地面积的37。
The arid and semi-arid areas in the west part of China comprise about 37.
土壤风蚀是中国北方干旱半干旱地区农田土地退化的重要原因。
Soil erosion by wind is a major cause of farmland degradation in arid and semiarid area of north China.
中国北方干旱半干旱地区的气象条件有利于土壤凝结水的形成。
The micro-meteorological conditions are advantageous for forming soil condensate in arid and semiarid regions in north China.
在干旱半干旱地区，封闭湖泊的湖水盐度对气候变化反应敏感。
The salinity of lake water is a sensitive monitor of climate in arid and semiarid region.
风蚀是全球性的自然灾害之一，此现象广泛分布于干旱半干旱地区。
Wind erosion is one of nature disaster around globe. This phenomenon is widely distributed in arid and semiarid area.
我国西北地区是世界上典型的干旱半干旱地区之一，占国土面积的38%。
Northwest of China, whose area accounts for 38 percent of the total, is one of the typical arid and semi-arid zone in the world.
土壤微生物结皮广泛存在于干旱半干旱地区 ，且具有重要的生态学意义。
Soil microbiotic crust is developed broadly and has an ecological significance in arid and semiarid regions.
在我国由于水资源日益短缺，干旱半干旱地区土壤干旱和盐渍化问题越发严峻。
With ingravescent fresh water scarcity, the situation of drought and soil salinity get even worse in the arid and semi-arid areas of China.
我国干旱半干旱地区，天然降水量少且时程及地域相差大，并有很大的随机性。
The natural precipitation of arid and semi-arid region of China is very few and uneven distributed in time and space with stochastic property.
分布在高亚洲的大量现代冰川，是亚洲中部干旱半干旱地区最重要的淡水资源。
There are a large number of survived glaciers on the High Asia which are the most important freshwater resource for the arid regions in the High Asia.
蒸散量是水量均衡中的重要组成部分，是干旱半干旱地区水资源评价的重要内容。
Evapotranspiration is both the important component of water balance and the important part of the evaluation of water resources in arid areas.
田间试验研究了西北干旱半干旱地区地膜覆盖对土壤中n 2o排放通量变化的影响。
Field experiments was used to study the change of soil N2O discharge flux in the northwestern arid and semi-arid areas.
本文将SCS模型应用于我国陕北干旱半干旱地区实际大流域——（牛孛）牛川流域。
The SCS model has been used in the arid and semi-arid Boniuchuan region's watershed, Shaanxi province.
水资源短缺已成为我国西北地区乃至世界上其他干旱半干旱地区需要面对的一个重大问题。
Lack of water resource has become a critical problem faced by China northwest regions and the other arid and semiarid regions in the world.
指出人工地衣可用于干旱半干旱地区集雨面的营建，且为极具潜力的绿色环保型集雨材料。
It is concluded that artificial lichen can be used as a green environment protecting materials to construct the rainwater catching site in arid and semi-arid areas.
新海21是节水型品种，能够较充分的利用有限的灌溉水，在干旱半干旱地区具有强大的优势。
New sea 21 can save water, can use limited irrigation water, so it has advantage of power in arid and semi-arid region.
中国干旱半干旱地区面积约占国土总面积的52.5%，成为农业、林业、畜牧业的重要基地。
The area of arid and semi-arid region of China accounts for 52.5 percent of the the whole area of territory, it is important bases of agriculture, forestry, animal husbandry of our country.
本文在前人研究基础上，总结了中国西北部干旱半干旱地区的水文特性，降水及径流的时空分布规律。
This paper summarized hydrological characters, distribution of precipitation and runoff in arid and semiarid regions in the northwest of China on the basis of the previous researches.
在大田条件下，研究不同灌溉量对干旱半干旱地区春小麦生长及产量构成的影响，以期为春小麦节水灌溉提供理论依据。
To supply scientific evidences of saving water, a study was made on effects of different irrigation quota on the growth and yield of spring wheat in field conditions in arid and semiarid regions.
雨水集蓄利用技术是解决干旱半干旱地区水资源紧缺的重要方式之一，人工集流场的建设在雨水集蓄利用技术中占据重要的地位。
The technique of rainwater harvesting, storage and utilization is the one of important methods to solve water resources shortage in the arid and semiarid zone.
生物土壤结皮广泛分布在干旱半干旱地区与寒区荒漠，是荒漠生态系统的主要组成和景观特征之一，其重要性已被大量的研究报道所证实。
Soil microbiotic crusts are widespread in arid and semiarid regions, they are one of the major components of desert ecosystems, and their importance has been demonstrated by numerous researches.
另一方面，在干旱和半干旱地区，湖泊数量少，湖泊之间距离远，减少了相互关联的可能性。
In arid and semiarid regions, on the other hand, the small number of lakes and the great distances between them reduce the possibilities for correlation.
侯赛因及其同事长期的研究表明，大坝尤其使干旱或半干旱地区的极端降水模式发生改变。
The long-term studies by Hossain and his colleagues suggest that dams have particularly altered extreme precipitation patterns in arid or semiarid areas.
蒙古位于半干旱地区，其气候易受严寒天气和极其干旱夏季天气的影响，正因为如此，牧民们总是要想方设法地维持稳定收入。
Maintaining a regular income is a constant battle as the climate in this semi-arid country is prone to severe, freezing winters and extremely dry summers.
这为干旱、半干旱地区制定合理的土地利用规划提供了科学依据。
This provides scientific basis for rational land use planning in arid and semi-arid areas.
影响树木生长及木材形成的诸多气候因子中，温度最重要，尤其是在干旱、半干旱地区或高纬度地区。
Among all of the factors that affect trees growth and wood formation, temperature is the most important, especially in arid, semiarid regions or high latitude regions.
沙土是存在于干旱、半干旱地区的一种特殊性土，其岩土工程性质与风沙环境紧密相关。
As a kind of special soil, aeolian sandy soil mainly lies in arid and semiarid areas where sand drift activity is very strong.
旱地管理：指对干旱和半干旱地区的管理。
Dryland (s) management: The management of arid and semi-arid areas.
摘要华北地区位于干旱和半干旱地区。
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