摘要
利用便携式空气负离子测定仪(AIC1000),对不同林龄马尾松林的空气负离子水平进行测定和研究.结果表明:同一马尾松林分内不同空间结构的空气负离子水平差异不具有统计学意义(p>0.05),而不同林龄马尾松林的空气负离子水平差异则极具有统计学意义(p<0.01);相比中龄林,马尾松过熟林、幼龄林、成熟林和近熟林的空气负离子水平分别提高90.81%,55.48%,43.82%和34.63%;马尾松林提供负离子功能及服务价值大小排序为过熟林、成熟林、近熟林、幼龄林、中龄林.研究结论为马尾松过熟林能有效提高空气负离子水平、具有较强的净化空气功能和服务价值,而中龄林的净化空气功能及服务价值最差.
The air anion concentration of Pinus massoniana forests of different ages was measured and studied ,using the AIC1000 portable air anions tester .The results showed that the difference in air anion concentration was not significant among different spatial structures in the same P. massoniana forest stand （p〉0.05） ,but highly significant among P. massoniana forests of different ages （p〈0.01）;The air anion concentration of the over‐mature forest ,the sapling forest ,the mature forest and the near‐mature forest for P. massoniana was 90.81% ,55.48% ,43.82% and 34.63% higher than that of the mid‐matu‐ration P. massoniana forest ,respectively .The order of function and service value of supplying air anions for P. massoniana was over‐mature forest 〉 mature forest 〉 near‐mature forest 〉 sapling forest 〉 mid‐maturation forest .Thus ,over‐mature P. massoniana forest can significantly improve air anion concentra‐tion and has a stronger function of air purification and higher eco‐service value ,and air purification func‐tion and eco‐service value of mid‐maturation P. massoniana forest are the poorest .
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第11期51-56,共6页
Journal of Southwest University(Natural Science Edition)
基金
重庆市前沿与应用基础研究项目(CSTC2014jcyjA00038)
重庆市科委基本科研业务费专项(BS1002)
重庆市沙坪坝区软科学研究项目(201325)
