Abstract：
:Plant litter production and decomposition are two important processes in forest ecosystems, since they provide the main organic matter input to soil and regulate nutrient cycling. With the aim to study these processes, litterfall, standing litter and nutrient return were studied for three years in an oak forest (Quercus humboldtii), pine (Pinus patula) and cypress (Cupressus lusitanica) plantations, located in highlands of the Central Cordillera of Colombia. Evaluation methods included: fine litter collection at fortnightly intervals using litter traps; the litter layer samples at the end of each sampling year and chemical analyses of both litterfall and standing litter. Fine litter fall observed was similar in oak forest (7.5 Mg ha/y) and in pine (7.8 Mg ha/y), but very low in cypress (3.5 Mg ha/y). Litter standing was 1.76, 1.73 and 1.3 Mg ha/y in oak, pine and cypress, respectively. The mean residence time of the standing litter was of 3.3 years for cypress, 2.1 years for pine and 1.8 years for oak forests. In contrast, the total amount of retained elements (N, P, S, Ca, Mg, K, Cu, Fe, Mn and Zn) in the standing litter was higher in pine (115 kg/ha), followed by oak (78 kg/ha) and cypress (24 kg/ha). Oak forests showed the lowest mean residence time of nutrients and the highest nutrients return to the soil as a consequence of a faster decomposition. Thus, a higher nutrient supply to soils from oaks than from tree plantations, seems to be an ecological advantage for recovering and maintaining the main ecosystem functioning features, which needs to be taken into account in restoration programs in this highly degraded Andean mountains.
journal_name
Rev Biol Tropjournal_title
Revista de biologia tropicalauthors
León JD,González MI,Gallardo JFsubject
Has Abstractpub_date
2011-12-01 00:00:00pages
1883-94issue
4eissn
0034-7744issn
2215-2075journal_volume
59pub_type
杂志文章abstract：:The Cuban archipelago has 79 Phyllophaga species with a 98.6 % of endemism, which makes the group ecologically and economically important, as some species are classified as crop pests. The aim of this study was to determine the relationship between the composition and structure of the Phyllophaga assemblages with thei...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
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journal_title：Revista de biologia tropical
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更新日期：2014-09-01 00:00:00
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pub_type： 杂志文章
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journal_title：Revista de biologia tropical
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journal_title：Revista de biologia tropical
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更新日期：2012-06-01 00:00:00
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journal_title：Revista de biologia tropical
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journal_title：Revista de biologia tropical
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journal_title：Revista de biologia tropical
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journal_title：Revista de biologia tropical
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journal_title：Revista de biologia tropical
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更新日期：2013-06-01 00:00:00
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journal_title：Revista de biologia tropical
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
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更新日期：2002-09-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2001-06-01 00:00:00
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journal_title：Revista de biologia tropical
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
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journal_title：Revista de biologia tropical
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pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：Revista de biologia tropical
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journal_title：Revista de biologia tropical
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pub_type： 杂志文章
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