http://www.cnr.it/ontology/cnr/individuo/prodotto/ID94483
DESIGN AND EVALUATION OF SALINE IRRIGATION SCHEDULES TO COPE WITH DROUGHTS AND SCARCE FRESH WATER (Contributo in atti di convegno)
- Type
- Label
- DESIGN AND EVALUATION OF SALINE IRRIGATION SCHEDULES TO COPE WITH DROUGHTS AND SCARCE FRESH WATER (Contributo in atti di convegno) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Alternative label
Anna Tedeschi 1 ; Massimo Menenti 1, Pasquale Tedeschi 2, Tao Wang 3, Xian Xue 3, Angelo Basile 1,
Giacomo Mele 1, Francesca De Lorenzi 1, Roberto de Mascellis 1, Bruno Di Matteo 1, Riccardo d'Andria 1,
Pasquale Giorio 1, Antonella Lavini 1, Giuseppe Sorrentino 1 (2007)
DESIGN AND EVALUATION OF SALINE IRRIGATION SCHEDULES TO COPE WITH DROUGHTS AND SCARCE FRESH WATER
in ICID 22nd European Regional Conference, Pavia, 2-7 settembre 2007
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Anna Tedeschi 1 ; Massimo Menenti 1, Pasquale Tedeschi 2, Tao Wang 3, Xian Xue 3, Angelo Basile 1,
Giacomo Mele 1, Francesca De Lorenzi 1, Roberto de Mascellis 1, Bruno Di Matteo 1, Riccardo d'Andria 1,
Pasquale Giorio 1, Antonella Lavini 1, Giuseppe Sorrentino 1 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- (1) CNR-ISAFOM.Institute for Mediterranean Agro Forestry Systems- Via Patacca 85, 80056 Ercolano Naples-
Italy; ph: +39 0815746606; fax :+39 0817718045 E-mail: A.Tedeschi@isafom.cnr.it, M.Menenti@isafom.cnr.it;
A.Basile@isafom.cnr.it; G. M ele@isafom.cnr.it; F .Dilorenzi@isafom.cnr.it; R.Demascellis@isafom.cnr.it;
B.Dimatteo@isafom.cnr.it; R.dAndria@isafom.cnr.it; P.Giorio@isafom.cnr.it; A. Lavini@isafom.cnr.it;
G.Sorrentino@isafom.cnr.it
(2) Department of Agronomy Engineering- University of Naples- Via Università 100 Portici (Napoli) - 80055 Email:
Tedeschi@unina.it
(3) Cold and Arid Regions Environmental and Research Institute (CAREERI) - Chinese Academy of Sciences
(CAS). 320 West Donggang Road, 730000 Lanzhou China; wangtao@lzb.ac.cn; xianxue@
lzb.ac.cn; (literal)
- Titolo
- DESIGN AND EVALUATION OF SALINE IRRIGATION SCHEDULES TO COPE WITH DROUGHTS AND SCARCE FRESH WATER (literal)
- Abstract
- The aim of the work is to describe for two different coastal pedo-climatic areas of Southern Italy and
one area in NW China the effects that saline water and drought have had on the soil physical properties.
On these soils the observed changes in soil physical properties after long-term salt accumulation will be
reported. The observed differences in soil hydrological properties of saline soils may have a significant
impact on the temporal variability of soil water content, e.g. on frequency and duration of soil water content
lower than a pre-defined critical threshold. To this end the soil water balance calculations will be performed
for a range of different meteorological conditions, in particular when a dry, wet and normal climatic
year occurs. To do that the SWAP numerical model (vers 2.0.7d) has been used. The water balance
calculations will be used to evaluate the water storage in the profile through the year.
At Torre Lama the h(?) curve of the 1% saline water treatments had lower values of ? than the 0%
treatments at the same pressure head. Different behaviour was observed for Vitulazio, the total porosity
for the I0 treatment is around 0.55 against 0.58 of the I1 treatment, in contrast with what observed for the
Torre Lama site. Such difference could depend from the shorter duration of saline-sodic water application
at the Vitulazio (2 years) site than Torre Lama (5 years). Moreover the difference between Torre Lama
and Vitulazio might depend from the difference in the type of clay minerals. In fact at Vitulazio there is
an abundance of smectite-type clay in the soil.
Despite the difference in total porosity of the two sites the soil water available (AW) calculated in the
range of 100 cm and 104 cm pressure head, for a layer of 100 cm depth, show a similar trend at the two
sites. At Torre Lama for all the irrigation frequencies and depths considered, the non-saline treatment had
lower AW-values than the saline treatments. At Vitulazio, even if the total porosity was in contrast with
Torre Lama, the calculated soil water available had the same trend. In fact the I0 treatment at Vitulazio
had an AW-value of 128.1 mm against the 178.4 mm of the I1 treatment.
The total porosity at Torre Lama changes from about 29% (I0 treatment) to 20% for the I1. Moreover
for the Vitulazio site the total porosity changes from a value of 21% for the I0 treatment, to 15% for the I1
treatment.
The numerical experiments have shown that the already clear difference in h(q) and K(h) of the I0 and
I1 treatments is reflected in significantly higher AW values of I1 against the I0 throughout the year. The
persistence of soil water deficit is also lower for the I1 than for the I0 treatment, as shown by the lower
number of days with AW < soil water retention capacity. (literal)
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