沙漠边缘的半干旱土地处于非常脆弱的生态平衡之中，而这些半干旱区域对于持续增加的环境压力的适应能力极其有限。
The semiarid lands bordering the deserts exist in a delicate ecological balance and are limited in their potential to adjust to increased environmental pressures.
旱区包括干旱区和半干旱区。
干旱区和半干旱区的造林主要受水分条件的限制。
The afforestation in arid and semiarid is restricted by water condition.
山西省地处黄土高原东部，属我国北方典型的半干旱区。
Shanxi Province, at the east of the Loess Plateau, is located in the typical semi-arid region in northern China.
风沙土是形成于干旱区、半干旱区的一种特殊性质的土。
Aeolian sandy soil is a kind of specific soil formed in arid or semiarid area. It has specific engineering property.
风沙土是形成于干旱区、半干旱区的一种特殊性质的土。
Aeolian sandy soil is a kind of specific soil formed in arid or semiarid area.
水分是黄土高原半干旱区林草植被建设的主要限制因子。
Water is the primary limiting factor for forest and grass vegetation construction in semi-acid soils of the Loess Plateau area.
研究了辽西半干旱区井灌条件下褐土涌流畦灌的节水效果。
Water saving effects on surge flow border irrigation were studied under well irrigation in semi-arid area of West Liaoning.
机械化坐水种已成为中国半干旱区作物抗旱播种的有效措施。
Irrigating-sowing mechanization has become an effective measure on crop drought defying sowing in the semiarid region of China.
粮食生产功能是耕地最基本的功能，在半干旱区有着特殊的重要性。
Cereal production is the most basic function of cropland, particularly important over semiarid areas.
本文对高寒半干旱区蔬菜中硝酸盐含量状况及其防治措施进行了研究。
This paper deals with the content of nitrate accumulation in vegetable crops and its control in the "Ba Shang" region.
浑善达克沙地是我国北方干旱半干旱区的主要沙地和严重荒漠化地区之一。
Otindag Sandland is one of the main sandlands and among the most seriously desertificated region in semiarid area of China.
东北半干旱区是我国北方旱农地区的重要组成部分，多数地区没有灌溉水源。
Northeast semi-arid region is one of the main parts of the north dry farming area, most of which no irrigation water resources.
东北半干旱区是我国北方旱农地区的重要组成部分，多数地区没有灌溉水源。
Northeast semi-arid region is one of the main parts of the north dry farming area, most of which have no irrigation water resources.
干旱半干旱区降水少，土壤水分亏缺，林木成活率低、保存率低、生长缓慢。
In the arid and semi arid area, the precipitation is little, soil moisture insufficient and low survival rate, low preserved rate and slow growing of trees.
干旱与半干旱区域的广大面积含有对农作物足以造成不利关系的高浓度溶性盐。
Extensive areas of the arid and semiarid regions have soils containing concentrations of soluble salts sufficient to adversely affect plant growth.
土壤热通量在地表能量交换中扮演着重要角色，干旱半干旱区土壤热通量更加重要。
Soil heat flux plays an important role in energy flux exchange between land and atmosphere, especially in arid and semi-arid region.
黑河流域属于干旱半干旱区内陆河流域，冰川、戈壁、沙漠以及绿洲等自然景观并存。
The Heihe River basin (HRB) belongs to the arid inland basin, and contains many natural landscapes, such as glacier, the Gobi, desert and the oasis and so on.
结果表明：（1）黄土高原半干旱区不同树种林地及荒坡土壤含水量很低，接近于凋萎湿度。
The results were as the following:(1) In semi-arid region of the Loess Plateau, the soil moisture contents of forestland and wasteland were low, near to the wilting humidity.
指出上游水资源开发对地处霍林河下游半干旱区域的科尔沁国家级自然保护区湿地带来的负面效应；
This paper presents negative effect of the water resources development to Keerqin wetlands of state nature reserve located semiarid area in downstream of the Huolin River.
四川西北部有理县等18个县属于干旱区或半干旱区，具有安哥拉山羊所要求的生态条件，可供引种时选用。
There are 18 counties in North-West Region of Sicbuan possessing the ecological factors that are necessary to the Angora goat and could be selected for the introduction.
我国干旱、半干旱区陆面能量平衡及其局地大气环流的年代际变率，是全球气候系统年代际变率的必然结果。
The interdecadal variability of surface energy balance and its related regional atmospheric circulation results from that of the global climate system.
低山丘陵半干旱区气候干旱、土地贫瘠、水土流失严重，加上人类活动的长期负面影响，使得该地区生态环境不断恶化。
Due to fewer rainfall, lean soil, serious soil and water loss and the long term negative effect of human activity, the ecological environment in hilly semi arid area is being degraded.
通过水分梯度实验发现丛生禾草针茅对水分胁迫的耐性高于根茎型禾草羊草，表明了针茅类植物对干旱半干旱区的高度适应性。
On moisture gradient, the patience of bunchgrass stipa to water stress is more strong than rhizomatous grass, which shows stipa plants more adapt to develop in the arid and semi arid areas.
乌兰布和沙漠是我国八大沙漠之一，处于我国北方半干旱与干旱区的转折位置上，进一步沙质荒漠化的潜在危险性。
Ulanbuhe desert is one of the eight largest deserts in China. It is located on the transitional zone between semi-drought and drought area, and could be easily desertified further.
乌兰布和沙漠是我国八大沙漠之一，处于我国北方半干旱与干旱区的转折位置上，进一步沙质荒漠化的潜在危险性。
Ulanbuhe desert is one of the eight largest deserts in China. It is located on the transitional zone between semi-drought and drought area, and could be easily desertified further.
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