欢迎访问《中国农学通报》,

中国农学通报 ›› 2015, Vol. 31 ›› Issue (22): 21-25.doi: 10.11924/j.issn.1000-6850.casb14120176

• 林学 园艺 园林 • 上一篇    下一篇

华北落叶松人工林叶面积指数与立地指数、密度、林龄关系模型研究

王雄宾1,徐成立2,余新晓3,李 洁1   

  1. (1河北省水利科学研究院/河北省农业节水工程技术研究中心,石家庄 050051;2河北省木兰围场国有林场答理局,河北围场 068400;3北京林业大学水土保持学院,北京 100083)
  • 收稿日期:2014-12-25 修回日期:2015-05-20 接受日期:2015-05-25 出版日期:2015-08-20 发布日期:2015-08-20
  • 通讯作者: 王雄宾
  • 基金资助:
    河北省水利厅项目“河岸缓冲带净水效果及优化配置技术研究”(2014-25)。

Study on Relationship Model of Leaf Area Index and Site Index, Stand Age, Stand Density of Larix principis-rupprechtii Plantations

Wang Xiongbin1, Xu Chengli2, Yu Xinxiao2, Li Jie1   

  1. (1Water Resources Institute of Hebei/ Engineering Research Center for Water Saving in Agriculture of Hebei,Shijiazhuang 050051;2Mulan-weichang National Forestry Administration of Hebei Province, Weichang Hebei 068400;3College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083)
  • Received:2014-12-25 Revised:2015-05-20 Accepted:2015-05-25 Online:2015-08-20 Published:2015-08-20

摘要: 为进一步研究华北落叶松林生态功能并提高当地森林经营水平,以冀北山地209块华北落叶松林标准地数据为依据,利用统计软件拟合了华北落叶松立地指数模型和以林分密度、林龄及立地指数为自变量,以冠层叶面积指数为因变量的相关关系模型。结果表明,所拟合的华北落叶松冠层叶面积指数与林龄、林分密度及立地指数关系模型具有以下特征:华北落叶松的冠层叶面积指数随密度、林龄、立地指数的增大而增大;在林龄、密度较小情况下,林分未充分郁闭,随密度、林龄增大,冠层叶面积指数的增幅较大,林分郁闭后,冠层叶面积指数随密度、林龄的增幅变缓;立地指数较高林地的叶面积指数值也较大,模型模拟值与实际情况相符合。通过所拟合模型,可以快速获得冀北山地华北落叶松林冠层叶面积指数理论值。

关键词: 杭州市, 杭州市, 耕地土壤, 酸碱度, 有机质, 养分, 空间变异

Abstract: In order to research the ecological function of Larix principis-rupprechtii forest and improve forest management, the relationship model of leaf area index and stand age, stand density, site index of Larix principis-rupprechtii forest was fitted with statistical software. The model was based on the investigation data of 209 pieces of Larix principis-rupprechtii forest standard, taking stand density, forest age, site index as the independent variables, and the canopy leaf area index as the dependent variable. The results showed that the relationship model of leaf area index and stand age, stand density and site index had the following characteristics: the canopy leaf area index of Larix principis-rupprechtii forest increased with the increase of stand age, stand density and site index. In the condition of low stand age and stand density, the crown closure was also low, the leaf area index increased linearly with the increase of stand density and age, while the leaf area index increased slowly with the increase of stand density and age when crown closure was high. The steady value of leaf area index was higher in the higher site index forest. The emulation values of the fitting model coincided with the actual condition. The theoretical value of the canopy leaf area index of Larix principis-rupprechtii forest can be obtained quickly by the fitting model.