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当前位置: 首页 > 文章 > 密度调控对杉木人工林中优势木生长过程的影响 四川林业科技 2019 (6) 43-47+64
Position: Home > Articles > Effects of Density Control on the Growth Process of Dominant Trees of Cunninghamia lanceolata Plantation Journal of Sichuan Forestry Science and Technology 2019 (6) 43-47+64

密度调控对杉木人工林中优势木生长过程的影响

作  者：
余克胜;张时林;鄢武先;贾晨;宋鹏
单  位：
洪雅县国有林场;资阳市自然资源和规划局;四川省林业科学研究院
关键词：
密度调控;杉木人工林;优势木;生长过程
摘  要：
为探索经营密度对杉木人工林中优势木生长的影响效果,以洪雅国有林场杉木人工纯林为研究对象,采用树干解析方法,测定分析了不同经营密度的杉木人工林中优势木的生长过程。结果表明,密度调控能够影响优势木树高、胸径和材积的生长过程;林分经营密度越大,树高平均生长量和连年生长量最大值越小,树高数量成熟时间越早;林分经营密度越小,胸径平均生长量越大,胸径数量成熟龄越晚;林分经营密度越大,优势木材积总生长量越小,材积平均生长量减小,材积平均生长量和连年生长量最大值出现的时间越晚,材积的数量成熟年龄越晚。低经营密度(500株·hm~(-2))有利于培育杉木大径材,而中高经营密度(>500株·hm~(-2))利于培育中小径材。
译  名：
Effects of Density Control on the Growth Process of Dominant Trees of Cunninghamia lanceolata Plantation
作  者：
YU Ke-sheng;ZHANG Shi-lin;YAN Wu-xian;JIA Chen;SONG Peng;State Owned Forest Farm of Hongya County;Natural Resources and Planning Bureau of Ziyang City;Sichuan Academy of Forestry;
关键词：
Density control;;Cunninghamia lanceolata Plantation;;Dominant tree;;Growth process
摘  要：
A Cunninghamia lanceolata plantation in Hongya forest farm was selected as an object to research the growth process of dominant trees under density control by the stem analysis method. The results showed that density control could affect the growth process of tree height, DBH and wood volume of dominant trees. The high density of stand would reduce the maximum of the average growth and the annual growth of tree height. It also made the tree height maturity earlier. The low density of stand would increase the average growth of DBH, and made the DBH maturity later. The high density of stand could reduce the total growth and the average growth of volume. It also postponed the time of the maximum of the average volume growth and the annual volume growth, and made the volume maturity later. Low density(500 plants·hm~(-2)) was conducive to cultivating large diameter wood of C. lanceolata, while medium and high density(>500 plants·hm~(-2)) was proper for cultivating medium or small wood.

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