[1]LI Haicong,LIAO Lijun,ZHANG Jiansheng,et al.Analysis of the Change Characteristics of Cultivated Land Physical Quality Grade at Different Elevations in Luliang County[J].Research of Soil and Water Conservation,2017,24(04):103-107.
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Analysis of the Change Characteristics of Cultivated Land Physical Quality Grade at Different Elevations in Luliang County
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 04
Page number:
103-107
Column:
Public date:
2017-08-28
- Title:
- Analysis of the Change Characteristics of Cultivated Land Physical Quality Grade at Different Elevations in Luliang County
- Keywords:
- other subjects of Agronomy; variation characteristics; spatial analysis and mathematical statistics; elevation; cultivated land; physical quality grade
- CLC:
- F301.24
- DOI:
- -
- Abstract:
- In view of the situation that altitude has not been taken as one of the grading factors in the first round of the farmland classification regulation in Yunnan Province, and research on variation characteristics of the influence of different altitude on the cultivated land natural quality in the county scale is scarce, we took Luliang County as the study area, to find out the variation characteristics of the influence of different altitude on the cultivated land natural quality using the GIS spatial analysis and mathematical statistics analysis method. The results indicate that: (1) on the whole, the natural quality grades of the paddy field, the irrigated land and the dry land in Luliang County are linearly related to the changes of altitudes, and show the decreasing trend with the rise of altitude; (2) in these areas whose altitude are less than 2 000 meters, the average natural quality grades of the paddy field, irrigated land and dry land are all relatively high, the levels range between 9.3 and 10.9; in these areas whose altitudes are higher than 2 000 meters, the average natural quality grades of the paddy field, irrigated land and dry land are all relatively low, the levels are between 10.0 and 11.8. As a consequence, the variation characteristics of the influence of different altitudes on the cultivated land natural quality have obvious regularity. These results can be used to provide scientific basis for the perfection of farmland classification theory.
- References:
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1900-01-01