滇中3种阔叶燃烧性与土壤有效磷含量的关系  

Relationship between the combustibility of three broadleaf species and soil available phosphorus content in central Yunnan

作　　者：李国辉 王昆伦 蒋婷 潘应云 陈宏刚 李世友 LI Guohui;WANG Kunlun;JIANG Ting;PAN Yingyun;CHEN Honggang;LI Shiyou(College of Civil Engineering,Southwest Forestry University,Kunming,Yunnan 650224,China;Guangxi Gaofeng State Owned Forestry Farm,Nanning,Guangxi 530002,China;Southern General Station of Aerial Forest Protection Ministry of Emergency Management,Kunming,Yunnan 650021,China;Key Laboratory of Forest Disaster Warning and Control in Yunnan Province,Kunming,Yunnan 650224,China)

机构地区：[1]西南林业大学土木工程学院,云南昆明650224 [2]广西国有高峰林场,广西南宁530002 [3]应急管理部南方航空护林总站,云南昆明650021 [4]云南省森林灾害预警与控制重点实验室,云南昆明650224

出　　处：《森林与环境学报》2021年第5期495-503,共9页Journal of Forest and Environment

基　　金：国家自然科学基金项目(31260180)。

摘　　要：为探究滇中地区土壤有效磷含量与植物叶片理化性质以及燃烧性的关系,以银荆、蓝桉、滇青冈3种滇中地区常见常绿阔叶树种为研究对象,统计随着土壤有效磷含量升高,植物叶片粗脂肪含量升高、灰分含量降低、热值增大的样品批次所占比例,并计算植物叶片的燃烧性综合指数,分析叶片燃烧性综合指数与土壤有效磷含量的关系,研究土壤有效磷含量对植物燃烧性的影响。结果表明:随土壤有效磷含量升高,银荆和滇青冈叶片的粗脂肪含量升高、灰分含量降低、热值增大的批次比例均在50%以上。蓝桉叶片除粗脂肪含量升高的批次比例超过50%外,灰分含量降低与热值增大的批次比例均未达到50%。土壤有效磷含量升高,3种植物叶片的粗脂肪含量升高,但其对灰分含量和热值的影响在不同树种之间有所差别。土壤有效磷含量升高能够提升植物叶片的燃烧性,对滇青冈的提升效果最显著。The common evergreen broad-leaved tree species in central Yunnan,Acacia dealbata,Eucalyptus globulus,and Cyclobalanopsis glaucoides,were studied to explore the relationship among soil available phosphorus content,the physicochemical properties,combustibility of plants leaves in central Yunnan.With an increase in the soil available phosphorus content,the proportion of sample batches with an increase in crude fat content,a decrease in ash content and an increase in calorific value were calculated.The comprehensive index of plant leaf combustibility was calculated,and the influence of soil available phosphorus content on plant combustibility was studied by analyzing the relationship between the comprehensive index of leaf combustibility and soil available phosphorus content.The results showed that with an increase of soil available phosphorus content,the proportion of batches with increased crude fat content,decreased ash content,and increased calorific value in A.dealbata and C.glaucoides leaves rose above 50%.However,in E.globulus leaves,the proportion of batches with decreased ash content and increased calorific value did not reach in 50%,although the proportion of batches with increased crude fat content exceeded 50%.The increase in soil available phosphorus content in the three tree species resulted in increased crude fat content,but the effects on ash content and calorific value differed among the tree species.This effect can increase the combustibility of plant leaves,especially for those of C.glaucoides.

关 键 词：可燃物理化性质 土壤有效磷含量 燃烧性 阔叶树种 滇中地区 

分 类 号：S762.3[农业科学—森林保护学]