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The Effect of Topography and Geomorphology on Land Consolidation

Author: TianMi
Tutor: GaoMing
School: Southwestern University
Course: Soil
Keywords: Land Consolidation Topography Slope Current land use
CLC: F301
Type: Master's thesis
Year: 2011
Downloads: 133
Quote: 1
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Abstract

The land is an important resource for human survival and development. Under the current circumstances, land consolidation is an important means for China to achieve \Geomorphological conditions of terrain type and land use are closely linked, analysis and evaluation of the terrain is one of the basis of the work of local conditions to carry out land consolidation, land consolidation study is necessary. Domestic and foreign scholars in the field of research for the the land consolidation generation, development and significance have been very mature, and in the study of the impact factors of land consolidation, more a reflection of land consolidation, economic, and social background factors cause these The factors of the natural characteristics of the study is small, and therefore can not provide a comprehensive reference for land consolidation. Paper selected Chongqing Three landform types, six of the nine counties of the implementation of land consolidation project as the research object, to measured 1:2000 land-use maps and topographic map base map, on this basis, , according to the socio-economic situation in the project area, the land use problems, the needs of farmers and the relevant norms of land consolidation, the formation of 1:2000 land consolidation plan of the project area. Utilization by the topography of the land in the study area, project planning and layout, finishing effective research to clarify the impact of the topography of the land consolidation, to provide a scientific basis for the rational use of land resources and land consolidation project site. The following results were obtained: 1. Different topography of the study area, land use the current situation, as the topography changes, the shallow hill zone deep mound District to low mountainous districts within major land use types slope overall As regional The increasing trend of higher altitude and elevation difference, and did not take advantage of land is also gradually increasing. With increasing sea level rise and elevation difference from the current situation of irrigation and water conservancy, water availability is reduced, a single water source area of ??decreasing density increases, but the distribution of irrigation and drainage ditches connected to water and land also increased. From the field road the current situation of the different topography of the study area, with the complex terrain, the altitude increased and the relative elevation increases, production road density increases gradually Field Road distribution density decreasing channel width decreasing field. Visible topography of each study area, the current land use in the implementation of the land consolidation before impact. 2 by analyzing the different terrain conditions in the three study area land consolidation project layout differences can be seen, due to differences in terrain slope land formation works three landform types of land formation works earthwork, construction of The Shikan amount and the amount of digging foundation trench side has obvious differences, the performance for shallow hill land formation works amount lt; the deep mound District the amount of land formation works lt; the low mountainous land formation works amount. On the layout of farmland water conservancy district water engineering layout to take advantage of the new reservoir to supplement the lack of spatial distribution of water resources before finishing and repair mountain the Pingtang to improve the existing water water retention capability-based; irrigation and drainage engineering new and repair existing ditches main. New ditches, shallow hill area to new construction and maintenance specifications mainly in the 1 × 1m ditches, the following the deep mound area in new construction and maintenance of ditches specifications 1 × 1m, new construction and maintenance of the low mountain ditches Specification 1 × 1m following main specifications ditches in the 1 × 1m more. The layout of the field road works, the the shallow hill district layout production road width is 1.2m, deep venturi area planning to 0.8m wide production road-based, low mountain planning to 0.6m wide production road presents a production road width by shallow hill to turn to low mountains, deep mound decreasing trend. Visible topography have a certain impact on the land consolidation project planning layout for each study area. Socio-economic and ecological benefits analysis, differences in the terrain conditions, social and economic benefits of the research area rated for shallow hill district 11.097, deep mound 14.575 low mountains 14.505, illustrate deep mound of land After finishing the most obvious social and economic benefits. Each study area, the value of ecosystem services also vary accordingly, the deep mound area during land consolidation highest integrated ecosystem service value through profit or loss rate, an increase of 7.45%, followed by a shallow hill district, an increase of 5.9%, the low mountains finishing slightly lower after the consolidated profit and loss rate of the value of ecosystem services, an increase of 5.69%, relatively best ecological benefits of deep mound area after the implementation of the land consolidation project. In summary, the Chongqing Land finishing influenced by topography larger Land Utilization from each study area, 10 Consolidation project planning and layout, and after finishing the social, economic, and ecological benefits of view, terrain the geomorphological differences impact can not be ignored. Therefore, the location of the land development projects, should choose a great potential, effective masses. Adhere to the principles of the easier issues first.

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