In this dissertation a typical area was selected as a case study , which is the tuqiang forest bureau , including two forestry farms , namely , yuying and fendou , covering more than 1 . 2 10s ha , it is also one of the most severely burned bureaus during this fire . based on the widely investigation of the background information in the study area , and supported by the geographic information system ( gis ) and remote sensing ( rs ) , the two digital forest stand maps ( 1987 and 2000 ) and dtm data were overlaid and the spatial and attribute database were produced . according to this , basic characteristics and changing of landscape structure and spatial pattern were widely and thoroughly analysed 论文选择位于大兴安岭北坡图强林业局的育英和奋斗两个林场作为研究区(该区是1987年重过火区，总面积12万多ha ) ，在对研究区基本情况广泛调查的基础上，借助于rs 、 gis技术手段，并辅以景观生态学知识的支持，研究了林火迹地森林景观格局及其变化的主要特征，同时运用分布指数、偏相关分析等方法重点探讨了地形因子对格局及变化的影响。
To day , the burned blank was almost restored . the proportion of forest area increased 47 . 6 % in 1987 to 81 . 3 % in 2000 , among the forest landscape patch types , coniferous is the dominant , about 47 . 6 % , which is the result of the intensive planting after fire 各景观斑块类型的变化强度迥然不同，林火迹地已基本恢复，并基本处于良好的发展状态，目前研究区主要乔木林(针叶林、阔叶林、针阔混交林)面积已占研究区总面积的81 . 3 ，演替顶级群落针叶林已达47 . 6 。
At the same time , the quality of different - state water was studied . the results show : the soil bulk density of the fir wildwood heightens with the increase of soil depth , specifically 0 . 74 > 0 . 94 andl . 34g / cm3 , the saturated , canaliculus and field moisture contents decrease gradually in layer a , b and c , accordingly the soil total foveola decreases gradually , and the moisture - hold capacity of the soil lessens gradually with the increase of the soil depth ; there is small difference of the soil bulk density between layer a and b in the outer space , which are respectively 0 . 92 and 0 . 99g / cm3 , and the other laws are the same as the in ner in the main ; reverse success often occurs in the low position of the thoroughly - fell trace and plateau marsh is formed 结果表明：冷杉原始森林土壤容重随土层深度的增加而增大，分别为0 . 74 、 0 . 94 、 1 . 34g cm ~ 3 ，饱和持水量、毛管持水量、田间持水量a层、 b层、 c层逐渐减小，十壤总孔隙度也逐渐减小，土壤的持水能力随深度的增加逐渐减弱；林外空地a层、 b层十壤容重相差不人，分别为0 . 92和0 . 99g cm ~ 3 ，其它规律与林内人体相同：皆伐迹地的低洼地段容易发生逆行演替，形成高原沼泽地。
The top ten changes by area were as follows : plantation to cut area , forest toopen forest , forestto cut area , non forest to forest , barren land to forest , plantation to plowland , forest to barren land , plantation to barren land , nonforest landto forest and open forest to forest . based on the forest changes , some suggestion on the management and ecoconstruction were put forward . 3 森林资源变化依次是经济林变成采伐迹地、林分转变为疏林地、林分转变为采伐迹地、非林地向林地转变、宜林地转变为林分、经济林转变为耕地、林分转变为宜林地、经济林转变为宜林地、未成林地转变为林分、疏林地转变为林分。
At the yearly burnt si tes , the amounts of bacteria declined , the amounts of fungi and actinomycetes increased significantly . the fine root biomass increased after fires , which was the most significant after high intensity fires , and the least significant after moderate intensity fires . the fine root biomass increased following a rainfall after any fire 火烧后，细根系的生物量均有所增加，且高强度火烧后增加最显著，其次是低强度火烧，中强度火烧最不明显；无论何种强度的火烧迹地，第一场雨过后，细根系生物量都有明显增加。
