喀斯特山区森林火灾后火烧迹地植物更新库研究  

Study on Plant Regeneration Bank in Burned Land after Forest Fire in Karst Areas

作　　者：李安定 彭熙 张建利 

机构地区：[1]贵州省山地资源研究所,贵阳550001

出　　处：《贵州科学》2014年第1期40-46,57,共8页Guizhou Science

基　　金：贵州省科学技术基金项目"贵州喀斯特山区森林火灾后土壤特征与更新的研究"[黔科合J字(2011)2333];中国科学院2012年度"西部之光"项目"贵州喀斯特峰丛洼地石漠化区‘藤冠’配置技术研究;贵州科学院省级科研专项"典型喀斯特生态退化类型区生态修复基地建设--以惠水县斗篷山和平塘县刘家湾为例"[黔科院专合字(2011)02]

摘　　要：本文通过不同森林火灾程度火烧迹地样地调查,研究火烧迹地幼苗库及芽库的物种种类、数量,并计算重要值,结果表明:不同森林火灾程度火烧迹地幼苗数量、种类有较大差异,优势种不完成表现为火灾前群落特征;不同森林火灾程度火烧迹地芽库数量、种类也有较大差异,森林火灾后火烧迹地上芽库的数量占优势,主要以萌发能力较强的植物组成,一般、重大、特大森林火灾在100 m2内芽库数量占总数量的比例分别为91.67%、67.19%、75%。因此,在植被自然恢复过程中,除了以种子萌发来恢复植被以外,其最主要方式取决于芽库的数量。Investigation was conducted on burned land with different degrees after forest fire. The numbers and species of seedling bank and bud bank in burned land were studied and calculated for their important values. The results showed that the numbers and species of seedling in burned land were greatly different because of extent of forest fire, and dominant species was not the same community characteristics before the fire. Larger differences ap- peared in the numbers and species of bud bank in different burned land forest fire. However, the numbers of bud bank were dominant, mainly composed of germination ability of the plant. Moreover, the proportions of the bud bank number within 100 m2 of the forest fire in general, serious and catastrophic ways accounting for the total num- ber were 91.67%, 67. 19% and 75% respectively. Therefore, during the process of the natural vegetation recovery, plant regeneration mainly depended on the numbers of bud bank, except for the seed germination to restore the vegetation.

关 键 词：森林火灾 火烧迹地 幼苗库 芽库 喀斯特山区 

分 类 号：S719[农业科学—林学]