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ARID AGRICULTURE UNIVERSITY RAWALPINDI (2021)

Land Assessment for crop Suitability using Multispectral remote Sensing and Geospatial Techniques : A Case Study of Punjab Pakistan

Amin, Muhammad

Titre : Land Assessment for crop Suitability using Multispectral remote Sensing and Geospatial Techniques : A Case Study of Punjab Pakistan

Auteur : Amin, Muhammad

Université de soutenance : ARID AGRICULTURE UNIVERSITY RAWALPINDI

Grade : Doctor of Philosophy (PhD) in RS and GIS 2021

Résumé partiel
In the last three decades, crop production and yield of major agriculture crops were stagnant : reasons might be attributed to climatic variability, area wise crops standing those were not suitable for certain crop type (e.g. maize crop in an area suitable for wheat is not feasible), time-series information, decreasing irrigation water availability, changes in soil fertility, unsuitable cultivars, etc. Agro-climatic zones were recognized dependent on climatic information, for example, rainfall, sunshine hours, wind speed, humidity, temperature, and humidity by ascertaining ET0 and moisture availability. Soil and climatic mapping were built at a spatial resolution of 100m by utilizing topography and other parameters. Soil mapping was done by used of 0.282million samples and attributed data with the location were further used for the preparation of agro-ecological zoning and suitability of crop maps. AEZ’s were delineated based on the homogeneity of climatic and edaphic variables by spatial overlaying approach by the use of delineated agro-climatic zones and soil maps. The study results show NDVI fraction method provides an excellent outcome with a minimal degree of variance in the spatial distribution of ETa over a wide field. Landsat 8 imageries for the year 2016 had been used to assess pixel-based vegetation coefficients. Actual ET images have been developed to examine the spatial variation of ETa throughout all zones. The actual ET was calculated in mm/day. Daily ETa values for Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, and Dec were 1.0, 1.71, 2.70, 3.5, 4.41, 5.01, 5.2, 4.5, 4.37, 3.01, 2.0, and 1.4 mm respectively. It is the preferred approach to be implemented at the regional level in Pakistan when working with multi date satellite imagery. Higher water is needed in zones I, II, and III (southern zones) in May, June, July, August, and September especially in comparison to other zones. High positive coefficient values indicate that satellite imagery-based ETa could provide valuable and timely water requirements for crops. Such research can be undertaken in other regions of Pakistan to improve the overall use of water resources and agriculture sustainability. The suitability of agronomic, vegetable, and orchard crops in each agro ecological zone was assessed by creating reasonableness maps utilizing ideal condition from sowing to harvest. The location-based suitability mapping of crops in each district was prepared based on all characteristics of crops. According to delineated wheat crop suitability cluster wheat is practically suitable in entire Punjab, except scarcely any 130 upper cluster of Punjab, like Rawalpindi, Murree, and Attock. Rice crop is appropriate in the area of Gujranwala, Narowal, Sheikhupura, and Gujrat, and in the couple of regions of Sialkot, Sargodha, Nankana Sahib, and so on.

Présentation (Pakistan Research Repository)

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Page publiée le 22 mai 2022