1) aridity index
干燥度指数
1.
Convenient method of calculation and application of median temperature and aridity index;
中值温度和干燥度指数计算及其应用的简便方法
2.
The calculation is made of the Holdridge aridity index to analyze climate tendency and characteristics of drought/wetness changes for the last 50 years by means of the mean air temperature and precipitation at Tengzhou from 1956 to 2005.
利用滕州市1956~2005年降水量、平均气温资料,用Holdridge干燥度指数来分析近50年气候干湿变化趋势和特征。
3.
The aridity index is calculated and the dryness/wetness characteristics are analyzed based on the daily meteorological data of 104 stations from 1961 to 2006 in the Huanghuaihai region.
利用干燥度指数对该地区的干湿状况进行了分析,将该地区划分为湿润、半湿润、半湿润半干旱、半干旱半湿润和半干旱5个干湿气候区,其中以半干旱区范围最大。
2) dry index of rice fields
稻田干燥度指数
1.
Meteorological data is use d to calculate number of days that temperature is steadily over 18 centigrade, a nd temperature accumulation that temperature is over 10 centigrade or equal to 1 0 centigrade, and dry index of rice fields in 1971-2000, and so on, which is com pared to determinate index, then it com.
文章在分析气象因子与水稻生长发育关系基础上,充分考虑黑龙江省的气候形势、地域特征及耕作制度,利用1971～2000年的气象资料,计算黑龙江省稳定通过18℃的天数、≥10℃积温及稻田干燥度指数等。
3) Radiative index of dryness
辐射干燥度指数
4) aridity index
干燥指数
1.
With the daily radiation data and monthly data of mean temperature, precipitation, relative humid, sunshine fraction and wind velocity amended Penman s method was used to calculate the potential evapotration spiration and the aridity index, at present and three prescribed climate scenarios, with temperature rise by 1.
利用改进后的 Penman式估算出全国潜在蒸散和干燥指数的空间分布 ,以及降水量增加 1 0 % ,平均气温上升 1 。
2.
The aridity index is defined to the ratio of .
定义干燥指数为潜在蒸散量与降水量的比值,用来描述西北干旱区的干湿状况。
5) dry summing index
干燥综合指数
6) radiation dryness index
辐射干燥指数
1.
The global 1*1 degree grid data were used to analyse the relationship between NOAA/AVHRR NDVI and the climatic factors which include multi-year average precipitation (Pcp), multi-year averaged net radiation (Netrn), and multi-year average radiation dryness index (RDI) from 1986 to 1990.
在全球1o ×1o 分辨率格点数据的基础上研究了1986～1990年多年平均NOAA/AVHRR的归一化植被指数(NDVI) 与多年平均降水(Pcp)、多年平均净辐射量(NetRn)、多年平均辐射干燥指数(RDI) 之间的关系,结果表明:(1) NDVI与降水、辐射干燥指数总体上存在对数关系,NDVI与净辐射量总体上存在线性关系。
补充资料：干燥度
| 干燥度 drought index 表征气候干燥程度的指数。又称干燥指数。它是可能蒸发量与降水量的比值，反映了某地、某时段水分的收入和支出状况。显然，它比仅仅使用降水量或蒸发量反映一地水分的干湿状况更加确切。由于可能蒸发量的计算方法不同，干燥度的表示方式也有多种。有以年平均气温或高于10℃积温的0.1倍表示可能蒸发的，有以辐射差额反映可能蒸发的。干燥度的倒数称湿润度或湿润指数。 |
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条