摘要
针对陕西黄土区人工林的植物群落空间结构性特征与水土保持功能的耦合关系,以陕西省咸阳区某生态水体保持公益林为研究对象,采用现场实地调查的方法,研究区域内人工刺槐林和人工油松林的林分结构和水土保持功能,并建立两者之间的耦合关系。结果表明,随着林分密度变量的增加,人工刺槐林和人工油松林的叶面积指数和林层指数均呈现出不同的变异性,在水土保持功能上均表现为异质性;通过建立人工林分结构参数和水土保持功能指标之间耦合关系模型,计算林分结构参数和水土保持功能参数,计算结果表明,叶面指数、林层指数与林冠截流率、产砂流量、产流量的信度、有效度均大于0.60,Bartlett球形检验系数接近于0,分结构参数和水土保持功能指标之间具有明显的相关关系。
In view of the coupling relationship between the spatial structural characteristics of plant communities and the functions of soil and water conservation of artificial forests in the loess region of Shaanxi Province,taking a public welfare forest for ecological water conservation in Xianyang of Shaanxi Province as the research object,the stand structure and functions of soil and water conservation of artificial locust forests and artificial Chinese pine forests in the region were studied by field survey,and the coupling relationship between them was established.The results showed that,with the increase of stand density variables,the leaf area index and forest layer index of artificial locust forest and artificial Chinese pine forest showed different variability,and showed heterogeneity in soil and water conservation functions.Through the establishment of a coupling relationship model between the structural parameters of artificial forest and the functional indicators of soil and water conservation,the calculation of stand structure parameters and soil and water conservation function parameters showed that the reliability and effectiveness of leaf area index,forest layer index,canopy interception rate,sand production flow rate,and flow rate were all greater than 0.60,Bartlett's spherical test coefficient is close to 0,and there is an obvious correlation between sub structure parameters and soil and water conservation functional indicators.
作者
党记刚
DANG Jigang(Shaanxi Yellow River Ecological Engineering Co.,Ltd.,Xi'an 710016,China)
出处
《科技创新与生产力》
2023年第8期47-50,共4页
Sci-tech Innovation and Productivity
关键词
人工林分结构
水土保持
分布特征
功能耦合
artificial stand structure
soil and water conservation
distribution characteristics
functional coupling
