Soil loss estimation and spatial mapping using rules and GIS-A case study in Kurumanpuzha sub watershed of Chaliyar river basin (Record no. 290313)
[ view plain ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 03738nam a22001697a 4500 |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 631.3 |
| Item number | AIS/SO PG |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Aishwarya M S |
| 245 ## - TITLE STATEMENT | |
| Title | Soil loss estimation and spatial mapping using rules and GIS-A case study in Kurumanpuzha sub watershed of Chaliyar river basin |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc | Tavanur |
| Name of publisher, distributor, etc | Department of Irrigation and Drainage Engineering, Kelappaji College of Agricultural Engineering and Technology |
| Date of publication, distribution, etc | 2022 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 142p. |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | MTech |
| 520 ## - SUMMARY, ETC. | |
| Abstract | Land degradation is a problem of grave concern and one major factor leading to it is soil erosion. The main aim of the study is to calculate the soil loss in the sub watershed. This study also analysed the quantitative analysis of morphometric parameters of Kurumanpuzha sub watershed using remote sensing data and geographic information system. Morphometric parameters were evaluated from three perspectives: Linear, Areal and relief characteristics. A fifth-order river drains Kurumanpuzha watershed and the drainage network is mainly dendritic type. The mean bifurcation ratio (Rb) was 2.05. The watershed has elongated shape suggesting low peak flows for longer duration and hence easier flood management. The drainage texture analysis revealed fine drainage which implies the dominance of impermeable soft rock with low resistance against erosion. High relief and steep slopes dominates, by which rough landforms (hills, breaks, and low mountains) make up major portion of the watershed. The hypsometric curve with hypsometric integral of 0.48 suggests that Kurumanpuzha watershed is in equilibrium or mature stage of geomorphic evolution. At sub-watershed scale, the derived morphometric parameters were grouped into three clusters (low, moderate, and high) and considerable spatial variability was observed. The results of this study provide information on drainage morphometry that can help better understand the watershed characteristics and serve as a basis for improved planning, management, and decision making to ensure sustainable use of watershed resources. Soil erosion is caused by the action of various factors which are intrinsic to the soil or related to the environment surrounding the soil. These factors include rainfall, soil erodibility, topographic characteristics, crop cover and conservation practices. The Revised universal soil loss equation (RUSLE) is a well-renowned empirical formula which is used to compute the average annual soil loss of a particular area. Remote sensing (RS) and geographical information system (GIS) technologies make modelling and execution of RUSLE easy, reliable and cost effective. So, these were employed to compute the spatial distribution of soil erosion risk area in Kurumanpuzha sub watershed in Kerala state, India. All the factors were generated using metrological data, CartoSat DEM, Landsat 8 imagery using GIS software and integrated in a GIS environment to estimate the soil loss rate. It was found that forest/Dense vegetation 142 (56.46%) was the dominant land use followed by rubber plantation (20.06%) and o scrub land (8.91%). The average annual soil loss of the watershed was estimated to be 8.00 t ha-1 yr-1 and the total quantity of soil eroded was 82,872.4 t yr-1 . The average annual soil loss was highest in bare land (8.55 t ha-1 yr-1 ) followed by scrub land (5.27 t ha-1 yr-1 ). The soil erosion map thus generated can serve as a basis for adopting suitable measures in the watershed for sustainable management of the resources in it. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Irrigation and Drainage Engineering |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rema K P (Guide) |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | https://krishikosh.egranth.ac.in/handle/1/5810208246 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | |
| Item type | Theses |
| Not for loan | Collection code | Permanent location | Current location | Shelving location | Date acquired | Full call number | Barcode | Date last seen | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Not For Loan | Reference Book | KAU Central Library, Thrissur | KAU Central Library, Thrissur | Theses | 2023-05-17 | 631.3 AIS/SO PG | 175605 | 2023-05-17 | Theses |