基于AHP和熵权法的华北落叶松林生态效应的研究  

Study on ecological effect of Larix principis-rupprechtii forest based on AHP and entropy weight method

作　　者：李惠丽 徐满 巩建新 李小乐 刘凯廷 周长亮 LI Hui-li;XU Man;GONG Jian-xin;LI Xiao-le;LIU Kai-ting;ZHOU Chang-liang(Hebei Mulan Paddock State Forest,Weichang,Hebei 068450)

机构地区：[1]河北省木兰围场国有林场,河北围场068450

出　　处：《河北林业科技》2022年第4期7-13,共7页Journal of Hebei Forestry Science and Technology

摘　　要：研究对象为接坝地区3种不同经营模式下的华北落叶松林,基于野外调查和室内试验,采用层次分析法(AHP),从乔木层、灌木层、草本层、枯落物层、土壤层5个层次建立生态效益评价指标体系,之后运用熵权法对3种经营模式下的华北落叶松林的生态效益进行综合评价。结果表明:(1)在3种经营模式中,均质经营下其平均胸径和平均树高最大,无干扰模式经营下其蓄积量最大且其灌木层的生物多样性最高,目标树经营下草本层的生物多样性最高。(2)枯落物层有效拦蓄量排序为目标树经营(74.41t/hm2)>均质经营(63.12t/hm2)>无干扰模式(31.68t/hm2);土壤最大持水量排序为均质经营(595.55g/kg)>无干扰模式(566.67g/kg)>目标树经营(555.55g/kg);水解氮含量最大的为均质经营模式(148.62mg/kg);有效磷含量排序为均质经营>目标树经营>无干扰模式;速效钾含量排序为无干扰模式>目标树经营>均质经营。(3)不同经营模式下华北落叶松林生态效益的排序为无干扰模式(40.78)>目标树经营模式(40.50)>均质经营模式(36.08)。综上所述,无干扰模式经营下华北落叶松林的生态效益最好。The research object of this study is theLarix principis-rupprechtiiforest under three different management modes in the dam area,based on field investigation and indoor test,Usesthe analytic hierarchy process(AHP),from the tree layer,shrub layer and herb layer,litter layer and soil layer 5 aspects such as establishing ecological benefit evaluation index system,using the entropy weight method to the comprehensive evaluation of ecological benefits ofLarix principis-rupprechtiiforest under three management modes,in order to provide reference for future forest management.Among the three management modes,the average DBH and the average height of the three management modes were the highest under the homogeneous management mode,and the maximum accumulation was 18.81m~3 under the non-interference management mode.The biodiversity of shrub layer was the highest under undisturbed management.The herbaceous layer had the greatest biodiversity under target tree management.The order of effective storage of litter layer is target tree management(74.41t/hm~2)>average management(63.12t/hm~2)>no interference mode(31.68t/hm~2).The order ofmaximum soil water holding capacity wasaverage management(595.55g/kg)>no interference mode(566.67g/kg)>target tree management(555.55 g/kg).The highest content of hydrolyzed nitrogen was in the homogeneous business mode(148.62mg/kg).The order of available phosphorus content was average management>target tree management> no interferencemode.The content of available potassium was no interference mode>target tree management>average management.The ecological benefits ofLarix principis-rupprechtiiforest under different management modes were ranked as no interferencemode(40.78)>target tree business model(40.50)>average management model(36.08).The results showed that the ecological benefit of Larix principis-rupprechtiiforest was the best under the non-disturbance management mode.

关 键 词：华北落叶松 AHP 熵权法 经营模式 生态效益 

分 类 号：S791.22[农业科学—林木遗传育种]