云杉人工林凋落物研究  

Studies of the Withered and Fallen Substances in Man-made Picea Forest

作　　者：宿以明[1] 刘兴良[1] 何飞[1] 柯金[2] 

机构地区：[1]四川省林业科学研究院,四川成都610081 [2]松潘县林业局,四川松潘623100

出　　处：《四川林业科技》2005年第5期46-48,95,共4页Journal of Sichuan Forestry Science and Technology

基　　金："国家林业局"十五"重点项目(2001010)";"四川省杰出青年学科带头人培养基金项目(NO.2001026)"的部分内容

摘　　要：本文以四川西部高山林区黑水县寡古1966年更新的川西云杉(Picea balfouriana)人工林为研究对象,开展了凋落物的收集和分析测定。结果表明:云杉人工林年凋落量为2 760.11 kg.hm-2,其中凋落针叶、树枝、树皮-杂物各占林分年凋落量的80.81%、17.40%和1.79%。凋落量各月间变化大,全年出现两个峰值;营养元素(N、P、K、Ca、Mg、Fe、Zn、Cu)贮存量为64.086 kg.hm-2.a-1,凋落针叶、树枝和树皮-杂物分别占林分营养元素贮存总量的85.58%、13.61%和0.81%。In this paper a study was made of the Picea balfouriana plantation that was regenerated in 1966 in the alpine forest region in Guagu of Heishui county of Western Sichuan, and its forest litter was collected and analysized. The results of measuring and analysizing the litter showed that the man-made spruce forest had an annual litter amounts of 2 760.11 kg per hectare, among which, the amounts of needles,branches, and barks plus impurities were 80.91%, 17.40% and 1.79%, respectively. The monthly variation of the litter was very large, and there appeared peak values in a year. The storage amount of the nutrient elements including N, P, K, Ca, Mg, Fe, Zn and Cu was 64. 086 kg·hm^-2·a^-1. among which, the storage amounts of needles, branches and barks plus impurities accounted for 85.58 %, 13.61% and 0.81% respectively.

关 键 词：云杉人工林 凋落物 营养元素贮存量 

分 类 号：S791.18[农业科学—林木遗传育种]