编号 zgly0000304234

文献类型 期刊论文

文献题名 Effect of Slash Burning on Nutrient Removal and Soil Fertility in Chinese Fir and Evergreen Broadleaved Forests of Mid—Subtropical China

学科分类 220.99;林学其他学科

作者 YANGYusheng  GUOJIANFEN 

作者单位 FujianAgricultureandForestryUniversity 

母体文献 PEDOSPHERE;土壤圈: 英文版 

年卷期 2003,13(1)

页码 87-96

年份 2003 

分类号 S791.27 

关键词 杉木  土壤肥力  常绿阔叶林  营养物质  亚热带地区  中国 

文摘内容 A Chinese fir forest(Cunninghamia lanceolata,CF) and an evergreen broadleaved forest(EB) located in Fujian Province,southeastern China,were examined following slash burning to compare nutrient capital and topsoil properties with pre-burn levels.After fire,nutrient(N,P and K) removal from burining rsidues was estimated at 302.5kg ha^-1 in the CF and 644.8kg ha^-1 in the EB.Fire reduced the topsoil capitals of total N and P by about 20% and 10%,respectively,in both forests,while K capital was incresed in the topsoils of both forests following fire.Total site nutrient loss through surface erosion was 28.4kg(N) ha^-1 ,84.kg(P)ha^-1 and 328.7kg(K) ha^-1 in the CF.In the EB,the losses of total N,P and K were 58.5,10.5 and 396.3kg ha^-1,respectively,Improvement of soil structure and increase in mineralization of nutrients associated with increasesd microbe number and enzyme acitvityes and elecvated soil respiration occurred 5 day after fire.Howerver,organic matter and available nutrient contents and most of other soil parameters declined ont year after fire on the burned CF and EB topsoils.These rsults suggest that short-tmerm site productivity can be stimulated immediately.but reduced subsequently by soil and water losses,especially in south China,where high-intensity precipitation,steep slopes and fragile soil can be expected,Therefore,the silvicultural measurements should be developed in plantation management。