semiarid zone

Internal Dynamic Causes of Desertification Development in Semiarid Zone

半干旱地区沙漠化发展的内在动因

A Strategic Way for Developing Agricultural Water Conservancy in Semiarid Zone of China Application of Geosynthetics in Rainwater Collection Project

集雨节灌&半干旱区农业水利化建设的战略途径土工合成材料在集雨工程中的应用

Factors of Death and Control Measures for Winter Rape in Arid and Semiarid Zone Hill Dry Land of South-east of Gansu

陇东南干旱半干旱山区旱地冬油菜苗期死亡的原因及其防治措施

There exists serious problem of environmental degradation in China 's semiarid zone ( between the two isohyets of 250 and 450 mm ) .

我国半干旱地区（年降水等雨线250&450mm之间的地带）存在着严重的环境退化问题。

Discussion on new technic in water conservancy of agriculture land in the North of China A Strategic Way for Developing Agricultural Water Conservancy in Semiarid Zone of China

北方地区农田水利新技术探讨集雨节灌&半干旱区农业水利化建设的战略途径

Gulang County stands in intersection of arid and semiarid zone , there are three types of land desertification : sandy desertification , water-eroded desertification and grassland degradation .

古浪县地处干旱半干旱过渡区，土地荒漠化表现为沙质荒漠化、水蚀荒漠化和草场退化3种类型。

Fengning line of the 112 national road , where the climate belongs to the semi humid and semiarid zone , the vegetation is lower and soil is porous because of its loess parent textile .

国道112线丰宁段处于半湿润半干旱的气候条件下，当地植被覆盖率低，土壤为黄土质母质，结构松散，黏结力差。

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 . The artificial catchment area is an important station in the water harvesting systems .

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。

Yanan Prefecture falls into an arid and semiarid climatic zone with an annual average rainfall of 500 mm or so .

延安地区属干旱、半干旱性气候，年平均降雨量500mm左右。

ANALYSIS OF SPATIAL PATTARN OF LANDSCAPE OF AGRICULTURE AND ANIMAL HUSBANDRY ECOTONE IN SEMIARID PLAIN ZONE taking on western coast of Dai hai lake for example

半干旱区农牧交错带平原景观空间格局分析&以凉城县岱海西岸为例

The results show that the precipitation variability is relative large during jointing to booting stage , and the drought appears easily during this stage in the warm semiarid and semi-humid agricultural zone .

结果表明：青稞拔节～孕穗期降水变率较大，此时温暖半干旱农区、温暖半湿润农区易出现旱情；