Studies of post-fire soil status in Mediterranean ecosystems are common;however,few have examined the effects of long-term forest management after a wildfire on physicochemical soil properties.Here,we analyzed differe...Studies of post-fire soil status in Mediterranean ecosystems are common;however,few have examined the effects of long-term forest management after a wildfire on physicochemical soil properties.Here,we analyzed differences in soil properties attributable to long-term postfire management and assessed the sustainability of these management practices in relation to the soil properties.The study area is located in Odena in the northeast region of the Iberian Peninsula consisted of the control forest(burned more than 30 years ago),low density forest(LD;burned in a wildfire in 1986 and managed in 2005)and high density forest(HD;burned in a wildfire in 1986 and no managed).For soils from each plot,we measured soil water repellency,aggregate stability,total nitrogen(TN),soil organic matter(SOM),inorganic carbon(IC),pH,electrical conductivity,extractable calcium,magnesium,sodium,potassium(K),phosphorus,aluminum(Al),manganese(Mn),iron(Fe),zinc,copper,boron,chrome,silicon and sulfur and calculated the ratios of C/N,Ca+Mg/(Na+K)^1/2,Ca/Al and Ca/Mg.Significant differences were found in TN,IC,SOM,pH,K,Al,Mn,Fe and C/N ratio(p<0.05).All soil properties were found to have largely recovered their pre-fire values.Soils were affected by the post-fire management practices implemented 20 years after the fire,as reflected in their respective physicochemical properties,so that soil properties at the control and LD sites are more similar today than those at the control and HD sites.Thus,sustainable forest management can overcome soil degradation in areas affected by wildfire in the medium-and long-term by improving soil properties.展开更多
Fire and pre-or post-fire management practices shape the distribution and richness of plant species.Here,the effects of pre-and post-fire management on vegetation recovery were studied at different times,up to 18 mont...Fire and pre-or post-fire management practices shape the distribution and richness of plant species.Here,the effects of pre-and post-fire management on vegetation recovery were studied at different times,up to 18 months after a wildfire.Two months after a 2015 wildfire,18 study plots were established(three 4-m^2 plots for each treatment),vegetation regrowth was monitored and vegetal species richness(S),evenness(IT),density(D),diversity(H0)and maximum diversity(HMax)after 2,10 and 18 months.The treatments were(1)control,unaffected by 2015 wildfire;(2)no treatment(NT),burned in 2015 wildfire and not managed;(3)managed in 2005 and burned in 2015(M05B);(4)managed in 2015,2 months before wildfire(M15B);(5)cut and manual removal after the 2015 wildfire(CR);(6)cut and no trunk removal randomly deposited on topsoil after the 2015 wildfire(CL).All the treatments were carried out in a Pinus halepensis Miller forest.At 10 and 18 months after the wildfire,vegetation recovery was greater in NT,CR and CL plots than in M05B and M15B the plots.By 18 months after the wildfire,Brachypodium retusum(Pers.)P.Beauv.and Rosmarinus officinalis L.were still dominant,especially in M15B,corroborating the belief that pre-fire treatment reduced ecosystem resilience and vegetal recovery compared to the NT and post-fire managed plots.Richness was significantly lower 10 months after wildfire in control plots,and IT was significantly higher in that inventory than previously in M15B.Eighteen months after the wildfire,H0 was significantly lower in M15B.Ten months post-wildfire,HMax was significantly lower in the control plots.Eighteen months after the wildfire,HMax,was significantly higher in CR,CL and M05B than in the control and M15B plots.Overall,pre-fire management was detrimental to post-fire vegetation recovery,while manual post-fire management proved beneficial.展开更多
基金supported by the POSTFIRE Project(CGL2013-47862-C2-1 and 2-R)the POSTFIRE_CARE Project(CGL2016-75178-C2-2-R [AEI/FEDER,UE])+3 种基金financed by the Spanish Research Agency(AIE)the European Union through European Funding for Regional Development(FEDER)the FPU Program(FPU 014/00037)of the Ministry of Education,Culture and SportsProgram 2014SGR825 and 2017SGR1344 of the Generalitat de Catalunya
文摘Studies of post-fire soil status in Mediterranean ecosystems are common;however,few have examined the effects of long-term forest management after a wildfire on physicochemical soil properties.Here,we analyzed differences in soil properties attributable to long-term postfire management and assessed the sustainability of these management practices in relation to the soil properties.The study area is located in Odena in the northeast region of the Iberian Peninsula consisted of the control forest(burned more than 30 years ago),low density forest(LD;burned in a wildfire in 1986 and managed in 2005)and high density forest(HD;burned in a wildfire in 1986 and no managed).For soils from each plot,we measured soil water repellency,aggregate stability,total nitrogen(TN),soil organic matter(SOM),inorganic carbon(IC),pH,electrical conductivity,extractable calcium,magnesium,sodium,potassium(K),phosphorus,aluminum(Al),manganese(Mn),iron(Fe),zinc,copper,boron,chrome,silicon and sulfur and calculated the ratios of C/N,Ca+Mg/(Na+K)^1/2,Ca/Al and Ca/Mg.Significant differences were found in TN,IC,SOM,pH,K,Al,Mn,Fe and C/N ratio(p<0.05).All soil properties were found to have largely recovered their pre-fire values.Soils were affected by the post-fire management practices implemented 20 years after the fire,as reflected in their respective physicochemical properties,so that soil properties at the control and LD sites are more similar today than those at the control and HD sites.Thus,sustainable forest management can overcome soil degradation in areas affected by wildfire in the medium-and long-term by improving soil properties.
基金supported by POSTFIRE_CARE Project(CGL2016-75178-C2-2-R)sponsored by the Spanish Ministry of Economy and Competitiveness and AEI/FEDER,UE+1 种基金Support was also received from the FPU Program(FPU 014/00037)sponsored by the Ministry of Education,Culture and Sports,the EST16/00183 to a short stay in Mykolas Romeris University(Vilnius,Lithuania)to the Ministry of Education,Culture and Sports and project 2017SGR1344 of the Generalitat de Catalunya。
文摘Fire and pre-or post-fire management practices shape the distribution and richness of plant species.Here,the effects of pre-and post-fire management on vegetation recovery were studied at different times,up to 18 months after a wildfire.Two months after a 2015 wildfire,18 study plots were established(three 4-m^2 plots for each treatment),vegetation regrowth was monitored and vegetal species richness(S),evenness(IT),density(D),diversity(H0)and maximum diversity(HMax)after 2,10 and 18 months.The treatments were(1)control,unaffected by 2015 wildfire;(2)no treatment(NT),burned in 2015 wildfire and not managed;(3)managed in 2005 and burned in 2015(M05B);(4)managed in 2015,2 months before wildfire(M15B);(5)cut and manual removal after the 2015 wildfire(CR);(6)cut and no trunk removal randomly deposited on topsoil after the 2015 wildfire(CL).All the treatments were carried out in a Pinus halepensis Miller forest.At 10 and 18 months after the wildfire,vegetation recovery was greater in NT,CR and CL plots than in M05B and M15B the plots.By 18 months after the wildfire,Brachypodium retusum(Pers.)P.Beauv.and Rosmarinus officinalis L.were still dominant,especially in M15B,corroborating the belief that pre-fire treatment reduced ecosystem resilience and vegetal recovery compared to the NT and post-fire managed plots.Richness was significantly lower 10 months after wildfire in control plots,and IT was significantly higher in that inventory than previously in M15B.Eighteen months after the wildfire,H0 was significantly lower in M15B.Ten months post-wildfire,HMax was significantly lower in the control plots.Eighteen months after the wildfire,HMax,was significantly higher in CR,CL and M05B than in the control and M15B plots.Overall,pre-fire management was detrimental to post-fire vegetation recovery,while manual post-fire management proved beneficial.
