青海东部山区青杨幼龄林立地指数表的编制及应用  

Establishment and Application of Site Index Table for Populus cathayana Plantation in the East Mountain Region of Qinghai Province

作　　者：郑淑霞[1] 王占林[1] 马玉林[1] 

机构地区：[1]青海省农林科学院,青海西宁810016

出　　处：《青海农林科技》2015年第4期12-17,共6页Science and Technology of Qinghai Agriculture and Forestry

基　　金：青海省科技厅项目"青海东部山区高标准造林和低效人工林改造技术示范"(2013-N-525)

摘　　要：利用青海东部山区不同立地条件青杨人工林标准地资料,统计分析各标准地优势木树高与年龄的关系,以乘幂曲线拟合树高生长导向曲线,编制出适用于该地区的青杨幼龄林立地指数表,经落点检验证明所编表合格,使用该表对现有标准地进行立地质量评价,结果表明,56.2%的青杨处在较差的生长水平;该地区现有立地条件青杨生长的优劣顺序为:阴坡>半阴坡>半阳坡>山顶。Data from different sample-plots in the east mountain region of Qinghai Province were used in this research .A site index table of Populus cathayana plantation was constructed based on the model which made by the statistical relationship between dominanttree height in each plot and the corresponding tree＇ s age. The table was demonstrated to be of high accuracy when tested with test of falling point. Site quality of the different plots was evaluated by using the table. The results showed that 56. 2% of the total plots were in the low site quality level ; the shady slope was the best site condition fitting for Populus cathayana plantation＇ s growth, the top of mountain was the worst, half sunny slope was in the middle of them.

关 键 词：青海东部山区 青杨人工林 树高生长模型 立地指数表 立地质量评价 

分 类 号：S792.113[农业科学—林木遗传育种]