aridity index 中文意思是什麼
aridity index
解釋
乾旱度指數, 乾燥指數-
Aridity index and its applications in geo - ecological study
地理生態學的乾燥度指數及其應用評述 -
An aridity index based on the natural process of aridity and its application
基於乾旱自然過程的乾旱指數研究和應用 -
The calculation results show that the method designed is quite satisfactory. the models can reproduce the annual precipitation sequence and monthly precipitation sequence. and then the regional aridity index can be estimated statistically, in addition, they can reproduce the characteristic of history precipitation series
這兩類模型分別用於生成模擬年降雨量序列和月降雨量序列作為地區乾旱指標序列，從而對所研究地區乾旱特徵量的統計特性進行估計，並對已發生的地區乾旱的重現期進行識別。 -
We must take account of crack resistance when doing mixture design. after systematic and scientific determination and analysis of temperature contraction property, aridity contraction property and strength index, the thesis have chosen the best grade limits in which crack resistance and compressive strength are high. this conclusion is based upon standard ? grade limits of cement stabilizing crushed stones subbase
本課題在對水泥穩定類材料溫縮、干縮性能以及強度和模量等指標的測試分析前提下，以規范原有的水泥穩定碎石基層級配范圍為基礎，選擇出抗裂性和抗壓強度兩項指標俱佳的級配范圍。 -
Based on the serious shortage of soil moisture, soil aridity and vegetation recession in this region, the following issues are studied in this dissertation : ( 1 ) the meaning of soil water and its role in the water circulation ; ( 2 ) soil water deficit and its influence to vegetation growth ; ( 3 ) the definition of soil dried layer and the causes of its formation ; ( 4 ) soil dried layer distribution and characteristics in north of shaanxi loess plateau ; ( 5 ) the primary study of measurable index of soil dried layer
本論文主要針對黃土高原土壤水分嚴重虧缺現狀以及因之而形成的土壤干化和林草植被衰退現象，主要對以下幾方面的問題進行了研究： （ 1 ）土壤水分的意義及其在生態系統水分循環過程中的作用； （ 2 ）林草植被土壤水分虧缺狀況及其對植被生長的影響； （ 3 ）土壤干層的涵義及成因分析； （ 4 ）陜北黃土高原土壤干層的分佈及特徵； （ 5 ）土壤干層的量化指標初步研究。 -
From climate index, ecotone between agriculture and animal husbandry aridity ranges from 1. 0 to 2. 0, more year average precipitation in ecotone between agriculture and animal husbandry ranges from 250mm to 450mm
在氣候指標上，與乾燥度為1 . 0 2 . 0范圍，多年的平均降水量范圍為250 450mm大體一致。 2整個農牧交錯帶的土地利用特點。
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