Verbundprojekt ARINUS im Schwarzwald: Auswirkungen von atmogenen Einträgen und Restabilisierungsmaßnahmen auf den Wasser‐ und Stoffhaushalt von Fichtenwäldern

Feger, Karl‐Heinz; Raspe, Stephan

doi:10.1002/9783527678525.hbuw2000002

Cited by 3 publications

(2 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The fall of leaves, branches, flowers, and fruits supplies organic material to the surface layer of the soil nourishing the plant species. By means of this process, nutrients are deposited and mineralized, maintaining the soil fertility in these ecosystems [1][2][3]. The type of vegetation and the environmental conditions influence the distribution, quantity, and quality of these materials, which form the litterfall [4,5].…”

Section: Introductionmentioning

confidence: 99%

Semideciduous Seasonal Forest Production of Leaves and Deciduousness in Function of the Water Balance, LAI, and NDVI

Costa

Viana²,

Ribeiro³

2014

International Journal of Ecology

View full text Add to dashboard Cite

This study investigated the relationship between leaf production, litterfall, water balance, Leaf Area Index (LAI), and Normalized Difference Vegetation Index (NDVI) in semideciduous forests. The goal was to model this phenomenon to obtain the estimates of this component as an additional compartment of the ecosystem carbon sink. The tests were conducted in eight semideciduous forest fragments. Twenty-four permanent plots were monitored monthly and LAI measurements and weighing of litterfall deposited in nets were conducted for a period of thirteen months. In this period, Landsat 5 and IRS satellite images were obtained and processed for generation of NDVI. The water balance was calculated for each day. The relationship among the variables “leaf dry weight,” “LAI,” “NDVI,” and “water balance” was verified and a regression model was built and evaluated. The deciduous phenomenon can be explained by hydric balance, and LAI and NDVI are ancillary variables. The tendency of the variables in the period of 13 months was explained by quadratic functions. The varied behavior among the monitoring sites helped to know differences in the deposition of leaves. This study showed that only the leaf component of the litterfall of a semideciduous forest in tropical climate can capture 4 to 8 Mg·ha−1·yr−1of CO2and this amount can be estimated using climate, biophysics, and vegetation index variables.

show abstract

Section: Introductionmentioning

confidence: 99%

Semideciduous Seasonal Forest Production of Leaves and Deciduousness in Function of the Water Balance, LAI, and NDVI

Costa

Viana²,

Ribeiro³

2014

International Journal of Ecology

View full text Add to dashboard Cite

show abstract

“…O estudo da ciclagem de nutrientes (ciclo biogeoquímico) desempenha um papel importante no conhecimento das condições e dinâmica dos processos internos dos ecossistemas naturais, que auxiliam no entendimento das mudanças provocadas pela exploração florestal no ambiente (FEGER;RASPE, 1998), sendo o mesmo imprescindível nos estudos de nutrição, transferências e exportação de nutrientes em florestas.…”

Section: Introductionunclassified

Deposição De Serapilheira E Nutrientes Por Espécies Nativas Em Uma Floresta Estacional Decidual Em Itaara, Rs, Brasil

Vogel¹,

Schumacher²,

Trüby³

2012

View full text Add to dashboard Cite

O presente trabalho foi realizado em uma Floresta Estacional Decidual no município de Itaara (RS), Brasil, e teve como principal objetivo avaliar a produção de folhas e a transferência ao solo de nutrientes de sete espécies arbóreas nativas. Para a coleta das folhas, foram demarcadas seis parcelas de 25 m x 17 m cada, alocadas no interior da floresta. Em cada parcela foram distribuídos cinco coletores, totalizando assim 30 coletores. As coletas foram realizadas mensalmente, durante um período de 2 anos. No laboratório, o material foi separado, levando em consideração apenas as espécies selecionadas: Ocotea puberula (A. Rich.) Nees, Ocotea pulchella Mart., Nectandra megapotamica (Spreng.) Mez, Matayba elaeagnoides Radlk., Cupania vernalis Cambess., Parapiptadenia rigida (Benth.) Brenan e Schinus molle L. Nesse material, foram determinados os teores de N, P, K, Ca, Mg, S, Fe, Mn e Zn. Os resultados evidenciaram que houve variação da quantidade de deposição de folhas e nutrientes sobre o solo da floresta entre as espécies nativas analisadas. A espécie que mais transferiu nutrientes (principalmente N, P, K, Ca e S) foi a Parapiptadenia rigida.

show abstract

Experiences with liming in European countries - results of long-term experiments

Schaaf¹,

Hüttl²

2006

J. For. Sci.

View full text Add to dashboard Cite

ABSTRACT:Liming was and still is carried out in many European forests since the beginning of the 1980s. Main objectives of compensation liming is to neutralize actual acidic deposition in order to prevent further soil acidification, to increase base saturation and acid buffering capacity of the soil. This paper evaluates results from long-term liming experiments throughout Europe using different amounts and forms of liming materials. Differences in forest ecosystem reaction to liming can be caused by amount, form and frequency of the application, and by the solubility, reaction kinetics, contents and composition of the material used. Furthermore, other factors like climate, site history, management, environmental conditions (e.g. actual and historical deposition rates), humus form, C/N ratio, nitrogen stores, and the soil chemical properties (e.g. pH, base saturation, CEC) may strongly influence the effects of liming treatments. Element budgets of forested ecosystems on a plot or watershed scale provide a very useful tool to integrate the various effects of additional Mg inputs via liming/fertilization. Keywords: acid deposition; soil acidification; element budget; lime; dolomite; fertilization; soil pH; base saturation; buffer capacity; site history 36 J. FOR. SCI., 52, 2006 (Special Issue): [35][36][37][38][39][40][41][42][43][44] and an increase in cation exchange capacity of up to 51 kmol c /kg in the humus layers of the investigated sites. In the upper mineral soil changes were much smaller, in some cases even negative. In soil solutions pH values increased by up to two units after liming (LUNDSTRÖM et al. 2003). Accordingly, aluminum concentrations decreased generally, in some cases liming lead to a short-term increase, when cation exchange reactions released higher amounts of adsorbed Al. Liming generally resulted in clearly increased concentrations of nitrate and dissolved organic carbon (DOC) in soil solutions. This finding is mainly due to increased microbial acitivity, soil respiration and mineralization of soil organic matter (SOM; PERSSON et al. 1991) and could result in a risk for further mineral soil acidification and pollution of ground and surface waters as well as for substantial losses of SOM stores from the soil. KREUTZER (1995) reported losses of up to 23% of total carbon and 13% of total nitrogen from the humus layer after liming (6.5-7 t C/ha and 170 kg N/ha, respectively). A major part of the carbon losses was contributed to increased respiration losses and release from the soil as CO 2 . Effects of surface liming on mineralization and NO 3 leaching seem to be highly depending on the N-status of the site. An important indicator seems to be the C/N-ratio (PERSSON et al. 1989). Another possible risk of surface lime treatments is the mobilization of heavy metals from polluted humus layers and leaching from the soil in form of metal-organic complexes.In general, pH increases are correlated with the applied amount of dolomite. In the Hoeglwald experiment the application of 4,000 kg/ha dolomiti...

show abstract

Verbundprojekt ARINUS im Schwarzwald: Auswirkungen von atmogenen Einträgen und Restabilisierungsmaßnahmen auf den Wasser‐ und Stoffhaushalt von Fichtenwäldern

Cited by 3 publications

References 55 publications

Semideciduous Seasonal Forest Production of Leaves and Deciduousness in Function of the Water Balance, LAI, and NDVI

Semideciduous Seasonal Forest Production of Leaves and Deciduousness in Function of the Water Balance, LAI, and NDVI

Deposição De Serapilheira E Nutrientes Por Espécies Nativas Em Uma Floresta Estacional Decidual Em Itaara, Rs, Brasil

Experiences with liming in European countries - results of long-term experiments

Contact Info

Product

Resources

About