该地图展现了公认的指标—帕尔默干旱强度指数。
The maps show a widely recognized indicator known as the Palmer Drought Severity Index.
干旱等级是描述一次干旱强度的定量指标，干旱灾度是描述一次干旱造成社会损失大小的定量指标。
Magnitude of drought is a quantitative target for describing one drought scale, and disaster degree of drought is a quantitative target for describing one social loss caused by drought.
利用SDS - PAGE电泳分析法探讨干旱对供试苜蓿品种叶片可溶性蛋白的变化及其与干旱强度的关系。
Using SDS-PAGE electrophoresis analytic method, a study on the change of drought-induced protein in leaves of alfalfa cultivars under different extents of drought stress was conducted.
结果表明，土地退化的主要原因是近年持续干旱少雨，土地利用的强度过大，以及在干旱季节里没有适当的防护措施等。
The results show that the major reason for the land degradation is constant aridity such as shortage of rain, excessive use of land, and shortage of protection measures in dry seasons.
在回归分析和实验室加速碳化试验的基础上，给出了干旱地区桥梁混凝土强度和保护层厚度的合理取值。
The reasonable depth of concrete cover and concrete strength of railway bridges suitable for arid regions is given through regressive analysis.
一般而言，干旱胁迫强度越大，对各指标的影响越显著。
Generally, the greater the intensity of drought stress was, the more distinctly index changed.
干旱诱导蛋白的差异表达不仅与植物的种类有关，还与干旱胁迫强度、时间及发育阶段等有关。
The differential expression of drought induced protein not only relates to the type of plant, but also the drought intensity, time and development stage of plant, etc.
本文分析了晋陕蒙接壤地区资源开发中的生态环境问题，认为该地区生态环境问题主要有干旱少雨、风沙危害严重；地形破碎、沟壑纵横；水土流失面积大、侵蚀强度大。
The main ecological environment problems in the west China are a little rain and arid, serious hazard of wind sand, topography in pieces, vast hilly gully area and intense soil and water erosion.
所以，爬山虎对光照强度的适应范围较广，具有较强的抗旱性而不适应高土壤水分环境，是适用于干旱瘠薄荒山植被恢复的优良藤本植物。
It has the property of strong drought-resistance but can not stand the high soil moisture environment. Therefore, it is a suitable liana to the afforestation in barren mountain area.
所以，爬山虎对光照强度的适应范围较广，具有较强的抗旱性而不适应高土壤水分环境，是适用于干旱瘠薄荒山植被恢复的优良藤本植物。
It has the property of strong drought-resistance but can not stand the high soil moisture environment. Therefore, it is a suitable liana to the afforestation in barren mountain area.
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