XXII ISPRS Congress 2012: Technical Commission VIII

Shortis, M.; Shimoda, H.; Cho, K.

Bibliographic data

Multivolume work

Persistent identifier:: 1663813779

Title:: XXII ISPRS Congress 2012

Sub title:: Melbourne, Australia, 25 August-1 September 2012

Year of publication:: 2013

Place of publication:: Red Hook, NY

Publisher of the original:: Curran Associates, Inc.

Identifier (digital):: 1663813779

Language:: English

Additional Notes:: Kongress-Thema: Imaging a sustainable future

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Document type:: Multivolume work

Volume

Persistent identifier:: 1663822514

Title:: Technical Commission VIII

Scope:: 590 Seiten

Year of publication:: 2014

Place of publication:: Red Hook, NY

Publisher of the original:: Curran Associates, Inc.

Identifier (digital):: 1663822514

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(39,B8)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist ermittelt.; Literaturangaben

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Shortis, M.; Shimoda, H.; Cho, K.

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [VIII/6: Agriculture, Ecosystems and Bio-Diversity]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: PARTICIPATORY GIS FOR SOIL CONSERVATION IN PHEWA WATERSHED OF NEPAL Krishna Prasad Bhandari

Document type:: Multivolume work

Structure type:: Chapter

1. INTRODUCTION Soil erosion is a complex various natural process, which results decrease in fertility of the land and reduction of crop yields. Erosion is very high in Asia, Africa and South America averaging 30-40 t ha” year! (Borrow 1991). The world's natural resources and ecological problems are threatened by erosion. About 25x10" t of soil are eroded into seas every year by surface run off and6x10°ha of productive agricultural land is deserted in world (Anonymous, 200). After the long process soil is formed. Physical, chemical and biological activities have been easily eroded and supply of sediment by the change of land use pattern such as deforestation and agricultural activities in the upper catchments, development of floodplains, urbanization in lower catchments. Sediment load effects on water quality degradation, loss of primary production and benthic habitats. It increase in flooding and an increased cost associated with removal of sediment in navigation channel and with shortening the economic life of hydraulic structures (woods, 1984; Pringle1986; Kinsey1990; Robertson and Lee Long, 1990; Edwards, 1991; Arakel et al, 1993; Arakel 1995; Erskine and Saynor 1996a, 1996b: Erskine, 2003). The soil erosion is the natural process of combination of historical and geomorphological analysis. The rate of spatial and temporal distribution of the soil erosion depends on the interaction of physical and human circumstances. The land degradation stems from a combination of changes in land use, agricultural intensification and intense rainstorms. Erosion may also be exacerbated in the future in many parts of the world because of climatic change towards a more vigorous hydrologic cycle (Amore et al., 2004). Phewa lake watershed territory consists of acidic, moderately fine textured and non-stony clay (LRMP, 1983). Colluvial deposits can exceed 15 m in the depth owing to the mass movement near Pame (Ramsay, 1985). Soils International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B8, 2012 XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia with loamy skeletal texture are found in hilly areas (Mulder, 1978). Sand, silt and clay are found in the area. Bright reddish, dark reddish, brawn and dark brawn soils are found in the different parts of the Phewa lake watershed area (Lamichhane, 2000). The results estimated annual sedimentation deposit in whole Phewa Lake varies from 175,000 to 225,000 m? . A growing world population and the abandonment of large areas of the formerly productive land as a result of erosion, salinization or alkalization which is the conventional wisdom favors explaining erosion as a response to increasing pressure on the land. The previous study shows that about 5 decades time period half of the area of the Phewa Lake converted into land. There is the severe problem of changing lake into land due to the rainfall, climate change, pollution, sedimentation and land encroachment and other human activities. Phewa Lake is in mesotrophic situation and going to on state of eutriphication due to the environmental hazards and sedimentation. The lake is sediment eroded from debris of the Harpan Khola, Andheri Khola and its tributaries. From the hilly region of its watershed has the problem of flood and landslide due to the deforestation. Therefore, the study of the lake in climate change, sedimentation and environmental perspective study is essential. The previous study deals with the one or two related issues in soil erosion, sedimentation with some observation and modeling but not integrating participatory GIS approach for the generation of rule and policy as well as the activities of the all stockholder's of the watershed area. This study includes this approach for the reduction of the soil erosion in the watershed area. The objectives of this study is locate the erosion hot spots and land slide effects on soil erosion and sedimentation, to find out the ratio of soil erosion and sedimentation that has been the process of lake converted into land, to find the effects of climate change in soil erosion and sedimentation Internat 2.1 Stu The Ph south-w N to 2% Longitt zone | Mahabl fully c KaskiK Chapak southw metrop area of and wi is abou area of from € varies : the upr in the 2001 t of the monso Septen May ai area is Nepal. settlerr 2.2 Sui Socio village commi questic differe The re of wh includ; familie land ci survey soil er and ar Were c of sta

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