Biomass of primary and secondary vegetation in Rondonia, Western Brazilian Amazon

被引：84

作者：

Alves, DS ^{[1
]}

Soares, JV ^{[1
]}

Amaral, S ^{[1
]}

Mello, EMK ^{[1
]}

Almeida, SAS ^{[1
]}

DaSilva, OF ^{[1
]}

Silveira, AM ^{[1
]}

机构：

[1] USP,CTR ENERGIA NUCL AGR,BR-13400 PIRACICACA,SP,BRAZIL

来源：

GLOBAL CHANGE BIOLOGY | 1997年 / 3卷 / 05期

关键词：

Amazonia; biomass estimation; carbon cycle; land-use; land-cover; Rondonia; tropical secondary forest;

D O I：

10.1046/j.1365-2486.1997.00081.x

中图分类号：

X176 [生物多样性保护];

学科分类号：

090705 ;

摘要：

Biomass estimates of primary and different ages of secondary vegetation are reported for a tropical forest region in Rondonia, Western Brazilian Amazon. The estimates are based on published allometric equations, and on vegetation composition and allometric data collected in areas of primary forest and secondary vegetation of ages 2, 3, 5, 9, 11, 16 and 18 years. Primary forest biomass estimates varied from 290 to 495 t ha(-1). Secondary vegetation biomass estimates accounted for 40-60% of the primary forest biomass after 18 years of abandonment. Secondary growth rates in lightly used areas are estimated to have varied from 6.6 to 8.7 t ha(-1) y(-1) between the third and the eighteenth years after abandonment. CO2 sequestration by regrowing vegetation is discussed for two scenarios of land abandonment.

引用

页码：451 / 461

页数：11

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