半干旱地区，是指年平均降水量在350一500毫米的气候类型区。
【Key words】 Agro landscape change; Semi arid area; Landscape indices; Kangbao County
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Heavy deficit of water is a key problem in semi-arid area of the northwest China, Inner Mongolia.
内蒙古半干旱地区存在着严重的缺水问题。
参考来源 - 基于植被蒸散法的区域缺水遥感监测方法研究There is a significant linear correlation between the precipitation and water resources in semi-arid region, the dynamic regularity of water resources is basically same as the dynamic regularity of precipitation.
半干旱地区降水量与水资源量线性相关显著，降水量的变化规律基本上与水资源量的变化规律吻合。
参考来源 - 我国半干旱地区农业结构调整与水资源可持续利用研究The semiarid region of Loess Plateau of China is characterized by its extremely fragile ecosystems.
黄土高原半干旱地区生态系统非常脆弱。
参考来源 - 黄土高原半干旱区两典型林分主要树种光合耗水特性及影响因素研究There are two ways to develop multicropping in the arid and semiarid areas in northern China, increasing irrigation land and extending film mulching technique.
干旱半干旱地区发展复种一是继续增加有效灌溉面积，二是积极发展地膜周年覆盖增温保水。
参考来源 - 论复种与我国粮食生产的可持续发展Xinjiang belongs to the typical arid/semiarid region, which has many deserts and weak environment.
新疆属于典型的干旱、半干旱地区,荒漠面积大,生态环境脆弱。
参考来源 - 新疆保护性农业保证性政策的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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.
在半干旱地区，草地通常是最主要的天然植被，而该地区主要的经济活动是家畜饲养。
The raising of livestock is a major economic activity in semiarid lands, where grasses are generally the dominant type of natural vegetation.
美国西南部半干旱地区的湖泊水位在上一个冰河时代似乎比现在更高，这一事实曾一度归因于降水增加。
The fact that lake levels in the semiarid southwestern United States appear to have been higher during the last ice age than they are now was at one time attributed to increased precipitation.
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