Measured soil moisture improves wildfire prediction
Measured soil moisture improves wildfire prediction
24 July 2017
published by https://dl.sciencesocieties.org
USA – Despite the known connection between soil moisture and wildfire danger, measured soil moisture is conspicuously absent from the list of variables commonly used in wildfire danger assessments. Instead, assessments enlist the help of the decades-old Keetch-Byram Drought index (KBDI), a soil moisture surrogate calculated from precipitation and estimated evapotranspiration. In the absence of measured soil moisture data, the reliance upon KBDI as a surrogate to assess wildfire danger is understandable. But is the continued reliance on KBDI justified when high quality soil moisture data are available?
According to recent work published in Soil Science Society of America Journal, the answer is no. Researchers in Oklahoma compared the relationships of measured soil moisture, as fraction of available water capacity (FAW), and KBDI with wildfire occurrence statewide and found that FAW consistently outperformed KBDI. Soil moisture conditions conducive to large growing-season wildfires were more narrowly defined by FAW, regression models based on FAW correctly classified days with large fires at a higher rate, and FAW provided earlier warning of extreme wildfire potential. Based on these findings, the authors call for the replacement of KBDI with FAW in growing-season wildfire danger assessments in Oklahoma and regions with similar climate and vegetation types.
Portugal is to reduce the number of eucalyptus groves after the highly flammable plant was blamed for last month’s deadly forest fires.
Parliament voted for the measure Wednesday as part of ongoing forest law reforms that started in April, before the blaze in the central Pedrogao Grande region that killed 64 people and injured more than 250.
Prime Minister Antonio Costa last week urged measures to prevent a repeat catastrophe, while also highlighting the challenges of forest redevelopment.
“We can’t refuse to curb the growth of eucalyptus because we’re worried about its impact on the paper industry,” he said last week, referring to a sector that represents 4.9 percent of Portuguese exports.
Eucalyptus is Portugal’s most widespread forest plant, according to the country’s Institute for Nature Conservation and Forests.
But it is cited as a cause offorest fires that lay waste annually to around 100,000 hectares of vegetation.
Read more at: https://phys.org/news/2017-07-eucalyptus-deadly-portugal-forest.html#jCpPortugal is to reduce the number of eucalyptus groves after the highly flammable plant was blamed for last month’s deadly forest fires.
Parliament voted for the measure Wednesday as part of ongoing forest law reforms that started in April, before the blaze in the central Pedrogao Grande region that killed 64 people and injured more than 250.
Prime Minister Antonio Costa last week urged measures to prevent a repeat catastrophe, while also highlighting the challenges of forest redevelopment.
“We can’t refuse to curb the growth of eucalyptus because we’re worried about its impact on the paper industry,” he said last week, referring to a sector that represents 4.9 percent of Portuguese exports.
Eucalyptus is Portugal’s most widespread forest plant, according to the country’s Institute for Nature Conservation and Forests.
But it is cited as a cause offorest fires that lay waste annually to around 100,000 hectares of vegetation.
Read more at: https://phys.org/news/2017-07-eucalyptus-deadly-portugal-forest.html#jCpPortugal is to reduce the number of eucalyptus groves after the highly flammable plant was blamed for last month’s deadly forest fires.
Parliament voted for the measure Wednesday as part of ongoing forest law reforms that started in April, before the blaze in the central Pedrogao Grande region that killed 64 people and injured more than 250.
Prime Minister Antonio Costa last week urged measures to prevent a repeat catastrophe, while also highlighting the challenges of forest redevelopment.
“We can’t refuse to curb the growth of eucalyptus because we’re worried about its impact on the paper industry,” he said last week, referring to a sector that represents 4.9 percent of Portuguese exports.
Eucalyptus is Portugal’s most widespread forest plant, according to the country’s Institute for Nature Conservation and Forests.
But it is cited as a cause offorest fires that lay waste annually to around 100,000 hectares of vegetation.
Read more at: https://phys.org/news/2017-07-eucalyptus-deadly-portugal-forest.html#jCpPortugal is to reduce the number of eucalyptus groves after the highly flammable plant was blamed for last month’s deadly forest fires.
Parliament voted for the measure Wednesday as part of ongoing forest law reforms that started in April, before the blaze in the central Pedrogao Grande region that killed 64 people and injured more than 250.
Prime Minister Antonio Costa last week urged measures to prevent a repeat catastrophe, while also highlighting the challenges of forest redevelopment.
“We can’t refuse to curb the growth of eucalyptus because we’re worried about its impact on the paper industry,” he said last week, referring to a sector that represents 4.9 percent of Portuguese exports.
Eucalyptus is Portugal’s most widespread forest plant, according to the country’s Institute for Nature Conservation and Forests.
But it is cited as a cause offorest fires that lay waste annually to around 100,000 hectares of vegetation.
Read more at: https://phys.org/news/2017-07-eucalyptus-deadly-portugal-forest.html#jCp
