Terroir 2016 banner
IVES 9 IVES Conference Series 9 Introducing heterogeneity measurements in terroir studies. Application in the região demarcada do douro (n portugal)

Introducing heterogeneity measurements in terroir studies. Application in the região demarcada do douro (n portugal)

Abstract

Terroir zoning studies have to manage the heterogeneity and complexity of the landscape properties and processes. The varying geology is one of the main landscape properties conditioning the spatial variability of terroirs. An entropy-based index used to characterize the heterogeneity of soil particle size distribution has been recently recognized to be controlled by the lithological properties at landscape scale. This index, known as the Balanced Entropy Index (BEI), which has been identified as a very good predictor of soil water content, is a promising tool in geosciences because it provides a continuous parameterization of soil texture that enables establishing quantitative relationships between soil texture and all the hydropedological attributes related to it.

In this study, carried out in the Portuguese winegrowing region called Região Demarcada do Douro (RD Douro), we explored the BEI in the lithostratigraphic units, and its potential relationship with the vineyard distribution and characteristics at plot scale. The data set for this work was the soil map of RD Douro scale 1/25 000, the vineyard distribution, and the information of the soil map database, which includes analytical and morphological data of 1 217 soil profiles.

Results evidenced that, in areas with similar lithological properties, vineyard plant density is linearly related with the soil texture heterogeneity, being this relationship stronger in metamorphic lithologies than in granitic lithologies. In light of this and other remarkable results we concluded that the BEI is a useful new tool that might have multiple applications in terroir studies.

Download the PDF

DOI:

Publication date: June 23, 2020

Issue: Terroir 2016

Type: Article

Authors

Joaquín CÁMARA, Alberto LÁZARO, Vicente GÓMEZ-MIGUEL

Departamento de Producción Agraria, Universidad Politécnica de Madrid, 28040 Madrid, Avda. Puerta de Hierro, 2, Spain

Contact the author

Keywords

soil texture heterogeneity, Balanced Entropy Index, plant density, fractals, RD Douro

Tags

IVES Conference Series | Terroir 2016

Citation

Related articles…

Viticoltura dl montagna: elemento di tutela e valorizzazione del territorio

[lwp_divi_breadcrumbs home_text="IVES" use_before_icon="on" before_icon="||divi||400" module_id="publication-ariane" _builder_version="4.19.4" _module_preset="default" module_text_align="center" text_orientation="center" custom_margin="65px||18px||false|false"...
Read More

Grapevine under nutrient stress: exploring the adaptive mechanisms in response to iron deficiency conditions

In plants, stress due to nutrient deficiency can significantly impair their development and productivity.

Read More

Comparison of plant nutrients in the soil solution and bleeding sap of grapevine cvs

In this study macro and micro nutrients of plants (N = NH4 + NO3 , P, K, Ca, Na, Zn, Mn, Fe and Cu) were determined both in soil solution and bleeding sap and compared each other. Bleeding sap was collected from the nine varieties of grapevine Cvs. grafted on 5BB rootstock and grown in different soil conditions. For all varieties, plant nutrients content in bleeding sap as higher than in soil solution except for Ca and Na. While in soil solution Ca content was found at 10209 ppm, this value in bleeding sap was 49.20 ppm (Kozak Beyazy), 55.38 ppm (Trakya Ylkeren), 50.37 (Cardinal) and 74.27 ppm (Tekirdaô Çekirdeksizi) respectively. For the same varieties the Na values were as follows : 7.16 ppm (in soil solution) : 4.8, 3.23, 4.21,4.58 ppm (in bleeding sap) respectively. K content in bleeding sap was higher than in soil solution for a few varieties, and lower in some varieties. Traces of Fe and Cu were found in both media.

Read More

Sensory impact of sunburn in white wine and mitigation of climateinduced off-flavours by defoliation and application of reflecting particles on grapes

Climate change is a great environmental challenge with large impact on the Wine and sprakling wine industry. Heat waves and dryness cause frequent sunburn damage in white grapes

Read More

EFFECT OF MANNOPROTEIN-RICH EXTRACTS FROM WINE LEES ON PHENOLICCOMPOSITION AND COLOUR OF RED WINE

In 2022, wine production was estimated at around 260 million hl. This high production rate implies to generate a large amount of by-products, which include grape pomace, grape stalks and wine lees. It is estimated that processing 100 tons of grapes leads to ~ 22 tons of by-products from which ~ 6 tons are lees [1]. Wine lees are a sludge-looking material mostly made of dead and living yeast cells, yeast debris and other particles that precipitate at the bottom of wine tanks after alcoholic fermentation. Unlike grape pomace or grape stalks, few strategies have been proposed for the recovery and valorisation of wine less [2].

Read More