科尔沁沙地南缘不同配置行带式固沙林径阶分布模拟  

Simulation of diameter distribution of sand - fixation forests planting in beltscheme composition in southern margin of Horqin sandy land

作　　者：吴雪琼[1] 杨文斌[1] 王永胜[1] 党汉瑾 陈学勋 常伟东 彭瑞 

机构地区：[1]中国林业科学研究院荒漠化研究所,北京100091 [2]内蒙古敖汉旗林业局,赤峰024300

出　　处：《干旱区资源与环境》2014年第1期15-18,共4页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(40971283;31170667)资助

摘　　要：预测林分径阶结构能为人工林的定向培育提供科学可靠的理论依据。文中调查并分析了科尔沁沙地南缘4种不同行带式配置下赤峰杨固沙林径阶结构特征,分别利用Normal、Weibull以及Logistic分布函数对林分的径阶分布进行了模拟,并得到各模型预测参数,然后用卡方统计量对3种分布模型进行了检验。结果表明Logistic分布函数模拟低覆盖度行带式固沙林径阶分布效果最好。Diameter distribution forecasting could provided dependable theory foundation for the oriented-cultivating of artificial forests.In this paper we analyzed the characteristics and regulations of 4 sand-fixation forests planting in different belt-scheme of P.＊ Xiao zhuanica W.Y Hsu et Liangcv.‘Chifengensis＇ in southern margin of Horqin sandy land.Normal,Weibull and Logistic diameter models were used to fit the diameter distribution respectively,obtained all model prediction parameters,and then calculated chi-squared statistic to check the three diameter distribution models.The results showed that Logistic model was the most appropriate model fit for the sand-fixation forests planting in belt-scheme in study area.

关 键 词：低覆盖度行带式 固沙林 直径结构 分布函数 模拟 

分 类 号：S712[农业科学—林学]