克拉玛依不同配置模式防护绿地凋落物现存量及养分贮量  

Litter and the Nutrient Storage of Different Species Arrangement Patterns in Protective Greenbelt in Karamay, Xinjiang

作　　者：郑路[1,2] 尹林克[1,3] 胡秀琴 姜逢清[1] 李燕红 邱文成 

机构地区：[1]中国科学院新疆生态与地理研究所,乌鲁木齐830011 [2]中国林业科学研究院热带林业实验中心,凭祥532600 [3]中国科学院吐鲁番沙漠植物园,吐鲁番838008 [4]克拉玛依区园林局园林科研所,克拉玛依834000

出　　处：《林业科学》2011年第4期13-19,共7页Scientia Silvae Sinicae

基　　金：克拉玛依市科技项目(SK2007-01)

摘　　要：以克拉玛依市区北郊防护绿地为研究对象,对14种不同配置类型地表凋落物进行收集、取样和化学分析。结果表明:凋落物现存量117.34～719.36 g.m-2,乔灌行间混交方式最高,显著大于其他配置方式(P<0.05);凋落物各亚层贮量表现为未分解层>半分解层>完全分解层;地表凋落物组成以叶为主,占97.0%～53.8%,枝(皮)与其他组分因植物配置模式不同差异较大,花(果)所占比例最低;不同配置类型地表凋落物的养分含量、贮量均变异较大,以配置紫穗槐的乔灌行间混交类型地表凋落物各养分含量和贮量较高;地表凋落物中有机C含量最高,全Ca含量次之,全P含量最低,其他养分含量均较低;养分主要贮存在未分解层和半分解层,完全分解层极少。Litter on forest floor was collected and sampled in 14 different patterns of planting arrangement in the protective greenbelt in northern Karamay,China.Vertical distribution of the litter in the forest floor was investigated and the dry mass and chemical composition of litter were measured and analyzed.The results showed that the litter dry weight on the forest floor varied from about 117.34 -719.36 g·m-2.The planting pattern with trees and shrubs mixed by rows had significantly （P0.05） greater dry weight than other patterns.The litter pools in the different sampling layers of the forest floor displayed in an order of the litter layer fermentation layer humus layer.Leaf litter was the main component,accounting for 97.0%-53.8% of the litter mass.Branch （bark） contents varied among the different arrangement patterns,and flowers （fruits） accounted for the smallest proportion of the forest floor litter.Nutrient contents and storage on the forest floor differed greatly among the arrangement patterns,and they were higher in the pattern with both trees and shrubs （Amorpha fruticosa） mixed by rows.The content of organic C was the highest,the total Ca was the second,the total P the lowest and the other nutrients also lower.The nutrients storage was mainly in the litter layer and the fermentation layer.

关 键 词：防护绿地 凋落物现存量 养分贮量 克拉玛依 

分 类 号：S718.55[农业科学—林学]