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当前位置: 首页 > 文章 > 大兴安岭呼中林区地表死可燃物含水量及其环境梯度分析 生态学杂志 2009,28 (2) 209-215
Position: Home > Articles > Ground surface dead fuel moisture content in Huzhong forest area of Great Xing'an Mountains and its environmental gradient analysis Chinese Journal of Ecology 2009,28 (2) 209-215

大兴安岭呼中林区地表死可燃物含水量及其环境梯度分析

作  者：
王文娟;常禹;刘志华;陈宏伟;荆国志;张红新;张长蒙
单  位：
中国科学院沈阳应用生态研究所;大兴安岭呼中林业局
关键词：
可燃物;可燃物含水量;DCCA排序;生态梯度;呼中;大兴安岭
摘  要：
森林地表死可燃物含水量与林火行为密切相关,理解森林地表死可燃物含水量及其与环境因子之间的关系对于林火管理有重要意义。本文对大兴安岭呼中林区的不同植被类型内的地表死可燃物含水量,依据1h、10h和100h分类标准进行了对比,结果表明:杨桦林和钻天柳林等2种阔叶林地表死可燃物含水量最高,而其他植被类型比阔叶林内地表死可燃物含水量低,且之间无显著性差异;对兴安落叶松不同林型内的地表死可燃物含水量进行比较,发现越桔兴安落叶松林内地表死可燃物含水量最高,其他林型比越桔兴安落叶松林低,且之间没有显著性差异。此外,利用除趋势典范对应分析对地表死可燃物含水量的环境梯度进行分析。结果表明:第1排序轴反映了坡位与海拔梯度,即热量因素,沿着第1轴从左到右海拔和坡位逐渐降低;第2轴反映了坡向和林分密度梯度,即水分因素。总体来说,坡位与海拔是影响森林地表死可燃物含水量的主要环境因子,二者综合作用表达了该地区森林地表死可燃物含水量的空间生态梯度。
译  名：
Ground surface dead fuel moisture content in Huzhong forest area of Great Xing'an Mountains and its environmental gradient analysis
作  者：
WANG Wen-juan1,2,CHANG Yu1,LIU Zhi-hua1,2,CHEN Hong-wei1,2,JING Guo-zhi3,ZHANG Hong-xin3,ZHANG Chang-meng3(1Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China;2Graduate University of Chinese Academy of Sciences,Beijing 100049,China;3Huzhong Forestry Administrative Bureau,the Great Xing'an Mountains,Huzhong 165036,Heilongjiang,China)
关键词：
fuel;fuel moisture content;detrended canonical correspondence analysis(DCCA);ecological gradients;Huzhong;Great Xing'an Mountains
摘  要：
Ground surface dead fuel moisture content in forests is closely related to forest fires.To understand this moisture content and its relationship with environmental factors is of great significance in wildfire management.In this paper,the ground surface dead fuel moisture content in different forest types in Huzhong area of Great Xing'an Mountains was investigated,according to the classification standard of 1,10,and 100 h.The results showed that Betala platyphlla-Populus davidiana forest and Chosenia arbutifolia forest had higher dead fuel moisture contents than the other forest types,but no distinct difference was observed in the other forest types.Among different Larix gmelinii forest types,Vaccinium vitis-idaea-Larix gmelinii forest had a higher dead fuel moisture content than the rest Larix gmelinii forest types,but there was no obvious difference as well.The detrended canonical correspondence analysis(DCCA)on the environmental gradient of ground surface dead fuel moisture content indicated that the first axis reflected the spatial gradients of altitude and topographic position,i.e.,temperature condition,while the second axis reflected the gradients of aspect and stand density,i.e.,humidity condition.Generally,the main factors affecting the spatial pattern of ground surface dead fuel moisture content in forests were altitude and topographic position.The two-dimensional plots of axis 1 and axis 2 could clearly express the spatial gradient of ground surface dead fuel moisture content in Huzhong forest area of Great Xing'an Mountains.

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