World Patterns and Amounts of Terrestrial Plant Litter Production

Meentemeyer, Vernon; Box, Elgene O.; Thompson, Richard C.

doi:10.2307/1308565

Cited by 245 publications

(150 citation statements)

References 9 publications

Supporting

Mentioning

119

Contrasting

Unclassified

Order By: Relevance

“…O percentual de contribuição da fração foliar na serapilheira total, encontrado nas clareiras, está pró-ximo ao valor de 70%, como sugerido por Meentmeyer et al (1982). Em florestas semidecíduas do estado de São Paulo, foram encontrados percentuais entre 62,03% (Pagano 1989) e 71,58% (Oliveira 1997).…”

Section: Discussionunclassified

Produção de serapilheira em clareiras de uma floresta estacional semidecidual no município de Campinas, SP

Martins¹,

Rodrigues²

1999

Rev. bras. Bot.

View full text Add to dashboard Cite

Section: Discussionunclassified

Produção de serapilheira em clareiras de uma floresta estacional semidecidual no município de Campinas, SP

Martins¹,

Rodrigues²

1999

Rev. bras. Bot.

View full text Add to dashboard Cite

“…[71] In VAST, an estimate of CWD was based on published data for temperate and tropical forests worldwide of between 3% and 40% of aboveground biomass [Meentemeyer et al, 1982;Harmon and Hua, 1991;Delaney et al, 1998;Laiho and Prescott, 1999]. In the present work, values for g of 0.35, 0.25 and 0.20 (Tall Forests, Open Woodlands and Arid Shrublands, respectively) were used as equality constraints (Table 1) in runs 1c, 2a and 2b.…”

Section: A35 Coarse Woody Debris (Cwd)mentioning

confidence: 99%

Steady state turnover time of carbon in the Australian terrestrial biosphere

Barrett¹

2002

Global Biogeochemical Cycles

119

127

View full text Add to dashboard Cite

[1] The turnover time of terrestrial carbon was estimated using a multiobjective parameterization method that combined data sets of plant production, biomass, litter and soil-C observations in the calibration of a C-cycle model for the Australian continent (VAST1.1; Vegetation and Soil carbon Transfer). The method employed a genetic algorithm to minimize model-data deviations and maximize consistency between estimated model parameters and all available data. Based on the parameterization, the turnover time of biosphere C for Australia was estimated to be 78 years which is longer than global C-turnover estimates (of 26-60 years) due entirely to slower turnover of C in the upper 20 cm of soil. Turnover times of litter and deeper soil-C were similar to global values. By splitting total C in the upper 20 cm between labile and nonlabile fractions (based on published data) the turnover time of the labile pool was at least 44 years which is still longer than global estimates (9-25 years). Longer C-turnover in Australian surface soils was attributed to (1) limited soil moisture slowing decomposition more than net primary production, (2) frequent fires leading to a large fraction of nonlabile charcoal C in soil, and (3) strong adsorbing capacity for organic-C in these highly weathered soils. It was found that >89% of the C flux to the atmosphere from decomposition of organic matter originated from fine litter, coarse woody debris and the upper 20 cm of soil in all biomes.

show abstract

“…If we estimate a global annual aboveground litter fall of 54.8 ´ 10 15 g [Meentemeyer et al, 1982] over a worldwide land area of about 121 ´ 10 6 km 2 , and if we estimate a mean bulk density of litter fall of about 0.2 g cm -3 , then each year, a litter layer of about 2 mm would be deposited on the world's land so that this layer would theoretically reach a thickness of 2 m in 1,000 years. However, decomposition prevents such a rate of organic matter accumulation by breaking down the litter into carbon dioxide (CO 2 ), dissolved organic carbon (DOC), inorganic and organic nutrients, as well as stable humus.…”

Section: Introductionmentioning

confidence: 99%