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Articles by A. Landi
Total Records ( 3 ) for A. Landi
  M. Albaji , A. Landi , S.Boroomand Nasab and K. Moravej
  The main objective of this research is to compare two different irrigation methods according to parametric evaluation system in an area of 77706 ha in Shavoor Region in Khuzestan province, Southwest of Iran. Soil properties of the study area including texture, depth, electrical conductivity, drainage, calcium carbonate content and slope were derived from a semi-detailed soil study regarding Shavoor plain in a scale of 1/20000. After analyzing and evaluating soil properties by means of Geographic Information System (GIS), suitability maps were generated for both methods. The results showed that 14952.07 ha of the studied area were highly suitable for drip Irrigation method though not suitable enough for the surface irrigation method. Also, it was found that some series coded 3, 6, 7, 10, 11, 12, 22 and 23 covering an area of 27578.26 ha were not suitable to be used under both irrigation systems. Ultimately, drip irrigation system was suggested as the best method to be applied to the said study area. The main limiting factors in using both surface and drip irrigation methods in this area were soil salinity and drainage.
  A. Landi , S. Boroomand-Nasab , M. Behzad , M.R. Tondrow , M. Albaji and A. Jazaieri
  The main objective of this research is to compare different irrigation methods based upon a parametric evaluation system in an area of 43700 ha in the Fakkeh region located in Elam Province, West Iran. Soil properties of the study area including texture, depth, electrical conductivity, drainage, calcium carbonate content and slope were derived from a semi-detailed soil study regarding Fakkeh plain in a scale of 1:20000. After analyzing and evaluating soil properties, suitability maps were generated for surface, sprinkle and drip Irrigation methods by means of Remote Sensing (RS) Technique and Geographic Information System (GIS). The results showed that 1715 ha (3.93%) of the studied area were highly suitable for surface irrigation method whereas 7365 ha (16.86%) of the study area highly suitable for sprinkle irrigation methods. Also, it was found that 28190 ha (64.51%) of the study area were highly suitable for drip irrigation methods while some land units coded 1.1, 7.1 and 4.1 covering an area of 9335 ha (21.36%) were not suitable to be used for surface irrigation systems and one land unit coded 7.1 with an area of 735 ha (1.68%) was classified as unsuitable for sprinkle and drip irrigation systems. The results demonstrated that by applying drip irrigation method instead of surface and sprinkle irrigation methods, land suitability classes of 36790 ha (84.19%) for Fakkeh Plain will improve. Also, by applying sprinkle Irrigation instead of surface and drip irrigation methods, land suitability classes of 6945 ha (15.89%) of this plain will improve. The comparison of the different types of irrigation techniques revealed that the drip irrigation was more effective and efficient than the surface and sprinkle irrigation methods for improving the suitability to the irrigation purposes. Also, the sprinkle irrigation was more useful than surface irrigation method. Additionally, the main limiting factor in using surface and sprinkle irrigation methods in this area was soil texture and the main limiting factor in using drip irrigation methods was soil calcium carbonate content.
  R. Zalaghi and A. Landi
  This study have been conducted for evaluating agricultural practices and crop type effects on greenhouse gasses (GHG) emissions and soil carbon balance. Due to increase of GHGes in recent decades and their affect on Global warming, study of their emission from agricultural regions, seems to be necessary. The most important GHGes are carbon dioxide and methane. Carbon dioxide is increasing at the rate of 5% a year. Burning fuel and changing land use are two major human activities that result in this increase. Methane has a greenhouse effect as 21 times greater as CO2. At this study carbonic GHGes emissions from 3 fields were measured at Khuzestan Province in Iran. Experiment was conducted at 3 fields including rice-follow rotation (F1), follow-wheat rotation (F2) and melon-wheat rotation (F3); with 8 time sampling and with 3 repeats in completely randomized block design. Chamber method and gas chromatograph technique were used to measure CH4 and CO2 emission. Results showed that the highest amount of emission is related to CO2 and total emission is greatest for F1. This might be due to remaining crop residuals in this field and release of this gas during residuals decomposition. Average of methane emission was greatest for F1 (2.222 mg C m-2 day-1) and greatest emission was measured at near the rice harvest time on October, while the field 2 was a sink for atmospheric methane with mean of -0.106 (mg C m-2 day-1) and it was not significant difference with field 3 (zero). Methane emission from soils is depending on long paddy conditions at soil and these conditions are performing in rice cultivation.
 
 
 
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