严重退化红壤上恢复的马尾松—灌木混交林群落能量格局的研究

doi:10.11707/j.1001-7488.2001S123

林业科学 ›› 2001, Vol. 37 ›› Issue (zk): 131-136.doi: 10.11707/j.1001-7488.2001S123

严重退化红壤上恢复的马尾松—灌木混交林群落能量格局的研究

谢锦升林瑞余黄荣珍陈银秀杨玉盛

福建农林大学林学院,南平353001

收稿日期:2001-01-08 修回日期:1900-01-01 出版日期:2001-11-25 发布日期:2001-11-25

STUDY ON ENERGY PATTERN OF RECOVERING THE P.MASSONIANA AND SHRUBS MIXED FOREST ON THE SERIOUS DEGRADATION RED SOIL

Xie Jinsheng,Lin Ruiyu,Huang Rongzhen,Chen Yinxiu,Yang Yusheng

Forestry College of Fujian Agriculture and Forestry University Nanping 353001

Received:2001-01-08 Revised:1900-01-01 Online:2001-11-25 Published:2001-11-25

摘要/Abstract

摘要：

在生物量和生产力研究的基础上,对长汀河田严重退化土地上恢复的马尾松-灌木群落的能量格局进行了研究,结果表明:乔灌木混交林乔木层地上部分各器官干重热值均大于相应对照的,而地下部分的则低于相应对照的,群落各层次的干重热值大小为乔木层>灌木层>草本层>苔藓层。乔灌木混交林群落的能量现存量达258900.8kJ·m^-2,是对照群落的156.1倍。对照的群落仅由乔木层和草本层组成,植被盖度极低,光能转化效率很小,群落内昼夜温差大、土壤干旱,生态系统严重退化。乔灌木混交林群落能量年存留量、年归还量、年净固定量分别达27092.03、5825.01和32917.04kJ·m^-2a^-1,分别是对照的59.6、128.7和65.9倍;其群落的太阳能转化率为1.55% ,说明治理后群落的能量生产能力已基本得到恢复。

关键词: 马尾松&mdash, 灌木混交林, 能量, 侵蚀退化红壤

Abstract:

Based on the measurement of biomass and productivity, the caloric value of plant samples, the standing crop of energy, net energy production and energy conversing efficiency of mixed forest composed of P.massoniana and shrubs were determined. The caloric values in the mixed forest were in the order of trees>shrubs>herbs>mosses. The standing crop of energy in the mixed forest was up to 258900.8kJ·m^-2, being 156.1 times higher than that in the control (wasteland). Just being composed of trees and herbs, the plant community on control wasteland has a poor radiation capture efficiency and caused big difference in temperature between day and night, and soil draught in a long period, which are harmful to ecological recovery. The yearly retention, return and net production of energy in the mixed forest amounted to 27092.03, 5825.01and 32917.04kJ.m^-2a^-1, respectively, and were 59.6, 128.7 and 65.9 times higher than that on wasteland, separately. To the photosynthetic active radiation on the stand, the energy conversing on efficiency was 1.55%. It was concludedd that the energy productivity in the mixed stand was recovered to some extent.

Key words: P. massoniana and shrubs mixed forest, Energy, Eroded degradation red soil

谢锦升林瑞余黄荣珍陈银秀杨玉盛. 严重退化红壤上恢复的马尾松—灌木混交林群落能量格局的研究[J]. 林业科学, 2001, 37(zk): 131-136.

Xie Jinsheng;Lin Ruiyu;Huang Rongzhen;Chen Yinxiu;Yang Yusheng. STUDY ON ENERGY PATTERN OF RECOVERING THE P.MASSONIANA AND SHRUBS MIXED FOREST ON THE SERIOUS DEGRADATION RED SOIL[J]. Scientia Silvae Sinicae, 2001, 37(zk): 131-136.

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严重退化红壤上恢复的马尾松—灌木混交林群落能量格局的研究

STUDY ON ENERGY PATTERN OF RECOVERING THE P.MASSONIANA AND SHRUBS MIXED FOREST ON THE SERIOUS DEGRADATION RED SOIL

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