[1]LIU Jing,LIU Chengjing,JIAO Yuanmei,et al.Study on the Spatial Distribution Rules and Variation of Natural Factors of Hani Rice Terrace in Yuanyang County Based on GIS Spatial Data[J].Research of Soil and Water Conservation,2020,27(02):337-343.
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Study on the Spatial Distribution Rules and Variation of Natural Factors of Hani Rice Terrace in Yuanyang County Based on GIS Spatial Data
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 02
Page number:
337-343
Column:
Public date:
2020-03-30
- Title:
- Study on the Spatial Distribution Rules and Variation of Natural Factors of Hani Rice Terrace in Yuanyang County Based on GIS Spatial Data
- Keywords:
- GIS; Yuanyang rice terraces; natural factors; topography; rock; soil
- CLC:
- S157.3+1
- DOI:
- -
- Abstract:
- In order to protect artificial wetland of the Hani Rice Terrace, maintain regional ecological security, and inherit the terraced farming civilization, taking the Rice Terrace of Yuanyang County as the research site, we used a spatial analysis technology of GIS to analyze and study the spatial distribution and natural influence factors of terraces through field geological survey, consulting regional geological survey report and rock properties and soil properties, to further clarify the spatial distribution of terraces and mechanism of natural influencing factors on terrace, and to provide the reference for the management and research of terraces. The results show that:(1)the topography determines the shape and area scale of the terraces, 73.23% and 75.35% of the total area of terraces distribute along the contour lines at the subtropical gentle mountain area with the elevations of 800～1 500 m and slope gradient of 0°～15°, respectively;(2)the lithologic properties affect the integrity of terraced fields through affecting the water quality of rock retaining and storing water; the gneiss bedrock fracture is poorly developed, and has the good water storage performance in the middle part of the study area, the gneiss accounts for 51.49% of the rock area and 58.99% of the terrace, the rest of the study area is mainly dominated by limestone and sand shale with large void space and serious infiltration;(3)the mineral composition and physical and chemical properties of the soil are different, which restricts the growth and development of rice, the viscosity, water retentiveness and plasticity of soil affect the landscape pattern of terraces; the red soil(red soil of ephedra)and lateritic red soil(lateritic red soil of ephedra)in the middle of terrace area are mostly clay loam with the thick pedon, loamy texture and rich nutrients; under the condition of long-term artificial ripening, the soil is sticky and soil moisture and fertility properties are well preserved; most of the soils in other areas have different thicknesses, stratify obviously, have the poor water storage and fertilizer capacity, and poor farming performance. These results can provide a scientific basis for the development, utilization and protection of terraces.
- References:
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Last Update:
2020-02-25