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Development of organic matter in soils of natural phytocoenoses and agrocoenoses JARTS
Akramov, Y.; Drauschke, W.; Bojmurodov, R..
The brown mountain carbonate soils covering the “yadiere” (hills) in the Gissarska valley of Tadzhikistan have relatively high humus portions. The humus content in the upper layers of sedentary soils was found to range from 2.70 to 3.18 per cent. However, in eroded soils the humus content declines from 1.35-0.83 per cent to levels as low as 0.57-0.75 per cent. The decrease of humus substances in erodible soils is mainly dependent on their slope exposure. Soils on sites sloping to north revealed the highest humus content whilst soils on east and west slopes and, in particular, on south slopes were found to have the lowest humus content. Sprinkler irrigation applied to soils on sloping sites, following grass seeding, was found to result in swift growth and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil sciences humus content; Soil erosion; Slope exposure; Humic acid; SGK:SFK ratio; Tadzhikistan.
Ano: 2003 URL: http://www.jarts.info/index.php/jarts/article/view/35
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Taxonomy and distribution of the Trifurcula (Glaucolepis) raikhonae group (Lepidoptera: Nepticulidae) Naturalis
Nieukerken, E.J. van; Purplesis, R..
Trifurcula (Glaucolepis) melanoptera sp. n. is described from southern Europe, where it is widespread. It is closely related to the Central Asian T. (Glaucolepis) raikhonae Puplesis, which is redescribed. Together they form the raikhonae species group. Sinopticula Yang is here synonymized with Glaucolepis Braun, its only species S. sinica Yang is tentatively regarded as closely related, if not conspecific with T. raikhonae. The distribution is mapped. On the basis of recent Chinese findings the larvae are assumed to be gall-makers on Prunus branches. Some phylogenetic and biogeographic remarks are given.
Tipo: Article / Letter to the editor Palavras-chave: Lepidoptera; Trifurcula (Glaucolepis); Palaearctic region; Distribution & systematics; Invertebrates; Arthropods; Insects; Lepidopterans; Nepticulidae; Turkmenia; Afghanistan; Uzbekistan; Kazakhstan; Kirgistan; Tadzhikistan; China; Spain; France; Italy; Sardinia; Austria; Slovakia; Hungary; Croatia; Turkey; Ukraine; Crimea; Armenia; Turkmenia; Glaucolepis melanoptera; 42.75.
Ano: 1991 URL: http://www.repository.naturalis.nl/record/227699
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