revisedseminar-190807104447.pdf
- 1. APARNA VELURU, ROLL NO:5003, MSC,HORTICULTURE GIS AND ITS APPLICATIONS IN HORTICULTURE
- 2. Geographic Information Systems Describing Our World Describing Our World • We can describe any element of our world in two ways: Attribute Information: What is it? Species: Oak Height: 15m Age: 75 Yrs Location Information: Where is it? 51°N, 112°W
- 3. Definition: • A GIS is a computer based tool for mapping ,analyzing things that exist and events that happen on earth. (OR) • A database system in which most of the data are spatially indexed, and upon a set of procedures operated in order to answer queries about spatial entities in the database. Smith et al,1987 Burrough,1986
- 4. Components of GIS: A working GIS integrates five key components: Hardware Software Data People Methods General purpose GISs essentially perform five processes or tasks: Input Manipulation Management Query and Analysis Visualization 1. Simple questions 2. Analytical questions 3. Proximity analysis 4. Overlay analysis
- 5. Points Lines Areas Data Models: Raster vs. Vector Data Models: Raster vs. Vector Vector GIS is composed of points, lines, and polygons (areas) Raster GIS is composed of raster's, or cells
- 6. Desktop mapping CAD DBMS Remote sensing GPS Related technologies:
- 7. Special features On-line Digitization Map Coordinate Systems Conversion Spatial Interpolation 3D Display Mapping Where and What Things Are
- 8. GIS and its uses
- 9. Application of these technologies in Horticulture : Precision Farming Production prediction Spatial distribution map Site suitability for cultivation of crops Soil classification land use planning Habitat identification and biodiversity conservation Monitoring stress
- 10. Rain fall suitability Altitude suitability Ground truth observation Habitat identification based on existing data Model for crop suitability and habitat identification (Ecological niche modelling) Input sample record data,point vector layer background (environmental data), raster data (usualy in ASCII format) If environmental layers come from different sources: the same spatial resolution, same coordinates of each pixel (initial pixel), each layer must contain equal number of pixels. Predictive distribution models Eg: BIOCLIM, MAXENT, GARP etc
- 11. GIS-Prediction of Risk maps
- 12. Data input Data input Rain fall/temperature Soil type/topography Rain fall/temperature Soil type/topography Paper maps Paper maps Rain fall Temperature Soil type topography Rain fall Temperature Soil type topography Vector layers Vector layers Prepare soil pH map by soil type map Prepare slope map by topography map Prepare soil pH map by soil type map Prepare slope map by topography map Conversion to raster format Conversion to raster format Highly suitable-4 Moderately suitable-3 Marginally suitable-2 Not suitable-1 Highly suitable-4 Moderately suitable-3 Marginally suitable-2 Not suitable-1 Reclassification of thematic layers Reclassification of thematic layers data processing data processing Weighting and GIS overlay analysis Weighting and GIS overlay analysis Suitability maps were created according to the given criteria with 4 suitability categories Suitability maps were created according to the given criteria with 4 suitability categories Land suitability classification for tomato and cabbage by using GIS technique Jayasinghe et al.,2010
- 13. According to the suitability map, 50,400 hectare 25, 68,900 hectare of land area of land area in Sri Lanka could be identified as not suitable for growing Tomato and cabbage crops which might be due to the high rain fall and high temperature ,low elevation. Cont… Jayasinghe et al.,2010 Cropland suitability classification can be considered as Prerequisite for optimum utilization of available land resources for sustainable agricultural production
- 14. Site suitability for turmeric production in India-A GIS interpretation Site suitability map of turmeric drawn with the help of Eco-crop model DIVA - GIS Significance: environmental suitability is an important aspect which has direct impact on the productivity of the crop Parthasarathy et al.,2007 Optimum climatic conditions for cultivation collected from literature DIVA - GIS Prediction of suitability map Collection of data on area, production and preparation of graphs, Maps
- 15. Area map of zinger Productivity map of zinger Suitability map of zinger by DIVA-GIS Parthasaradhy et al.,2007 Site suitability map for Zinger by using GIS
- 16. Site:kanolibara river basin of sub humid tropical ecosystem of central India Data: Images from remote sensing + field surveys multi criteria overlay analysis Final layer reclassification- based on index values 17-Biophysical land units Recommendation of crops L.F-25% S.D-10% L.C-15% SL-20% HG-10% EL_10% Obi Reddy et al.,2004
- 17. Cont… RS and GIS approach helps to characterize biophysical units more effectively to understand their biophysical potentials, problems and stress environment. also helps to prepare and execute site specification plans for optimum utilization of available resources to maximize the productivity as well as maintain ecological balance. Obi Reddy et al.,2004
- 18. parameter slope azimuth soil vegD temp elevation Criteria 10-20% E,S-E silt-loam 2standsm2 1.5C 1500-1800m Study area Lilium ledibourii in Ardabil province of Iran Software-GIS Makhdum model Data collection in study area Modelling Predicted habitat of L.ledebourii Fataei et al.,2011
- 19. Fig: Geographical distribution of Lilium ledebourii The identified potential new habitats In Ardabil province near by its original habitat Cont…. Fataei et al.,2011 Significance: They were identified potential habitats for protection of natural monument as well as increasing the cultivation scope of L.ledebourii .
- 20. Estimating the global severity of potato late blight with GIS-linked disease forecast models LB forecast models- Blitecast, Simcast Climate data& its interpolation Determination of growing seasons Modelling & Analysis by using GIS Global zonation Hijmans et al.,(2000) Blitecast
- 21. Simcast Hijmans et al.,(2000) No of sprays(Observed leaf wetness) No of sprays(Predicted leaf wetness) No of sprays (Observed) No of sprays (Blitecast) Conclusion: Global zonation of LB results in the decision making about resource allocation for research, Safe and optimal use of Fungicides
- 22. NRSA facilitates several remote sensing & GIS application projects for natural resources and environmental management catering to food security, water security, energy security and sustainable development. SAC has been engaged in the development and dissemination of remote sensing and GIS technologies for national development. IRS data is being used for a diverse range of applications such as crop acreage and production Supporting institutions and data providers
- 23. Automation of land evaluation procedures for a variety of applications using GIS techniques. Extending precision farming database to smaller farm size and / or diverse crops/cropping systems. More accurate yield models, maps Identifying ways and means of reducing the cost of RS, GIS and precision farming technologies Errors in GIS Challenges
- 24. GIS along with spatial technologies like GPS and Remote sensing will be a key to improving farm practices in the coming decades. It plays a potential role decision making and monitor, analysis, control the production parameters with the aim to optimize the expanse and ecological effects and to increase the income. Conclusion
- 25. THANK YOU