The Keetch-Byram Drought Index (KBDI) assesses the risk of fire by representing the net effect of evapotranspiration and precipitation in producing cumulative moisture deficiency in deep duff and upper soil layers. The KBDI attempts to measure the amount of precipitation necessary to return the soil to full field capacity.

2025年3月4日 · Keetch-Byram Drought Index (KBDI) is an index used to determining forest fire potential. The drought index is based on a daily water balance, where a drought factor is balanced with precipitation and soil moisture (assumed to have a maximum storage capacity of 8-inches) and is expressed in hundredths of an inch of soil moisture depletion.

2007年1月1日 · Keetch-Byram Drought Index (KBDI) is a continuous reference scale for estimating the dryness of the soil and duff layers. The index increases for each day...

The Keetch-Bryam Drought Index (KBDI) is one of the few daily indices used to monitor drought. It is most often utilized in the wildfire community, for it can give a real-time indication of the drying potential for the finer fuels such as grasses and shrubs.

2013年9月8日 · Keetch-Byram干旱指数 ( KBDI) 是由天气信息估计潜在火险的一个累计算法， 包括每日最高温度、 每日 总降水和年降雨量礴 ]。 由于 需要输人的参数较少， 它被广泛地用于各地火险的估计， 如美国的火险等级系统和马来西亚森林火险预报0引言 林火预报技术的发展已经有近90 年的历史， 由过去的简单火险天气预报发展到今天复杂的预报系统。 国内外森林火险预报的方法很多， 著名的有苏联的聂斯切洛夫综合指数法、 日 本的实效湿度法、 瑞典Angstr on指标 …

The KBDI attempts to measure the amount of precipitation necessary to return the soil to full field capacity. It is a closed system ranging from 0 to 800 units and represents a moisture regime from 0 to 8 inches of water through the soil layer. At 8 inches of water, the KBDI assumes saturation.

The Keetch-Byram drought index (KBDI K B D I) was developed in the USA by Keetch and Byram (1968) in order to measure drought and facilitate fire control operations. This index is cumulative and requires daily temperature, daily and annual precipitation as input data.

2016年1月13日 · 本文采用Keetch-Byram干旱指数(KBDI)(Keetch and Byram，1968)表示干旱强度。KBDI是土壤回到饱和状态所需的水分，由简化土壤水分平衡方程获得:

2021年10月19日 · Keetch-Byram Drought Index (KBDI) is a continuous reference scale for estimating the dryness of the soil and duff layers. The index increases for each day without rain (the amount of increase depends on the daily high temperature) and decreases when it rains.

2 天之前 · The Keetch-Byram drought index (KBDI) is a continuous reference scale for estimating the dryness of the soil and duff layers. The range of the index is determined by assuming that there is 8 inches of moisture in a saturated soil that is readily available to the vegetation.