| Integrated Indicators-based Gradation of Cultivated Land Quality in Mountainous Region of Southwestern China |
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| 作者姓名： | SHAO Jing＇an WEI Chaofu XIE Deti ZHOU Yan |
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| 作者单位： | SHAO Jing’an，WEI Chaofu，and XIE Deti College of Resource and Environment，Southwest University，Chongqing 400716，China Chongqing Key Lab. of Digital Agriculture，Chongqing 400716，China ZHOU Yan College of Resource and Environment，Guizhou University，Guiyang 550025，China |
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| 基金项目： | 教育部教育科技计划;重庆市科委科技计划 |
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| 摘 要： | 1 Introduction The gradation of cultivated land is to assess the suitability of cultivated land for agricultural production in terms of natural and economic prop-erties of land (Feng et al. 2004). It can be used to evaluate sustainability of land use and …
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| 关 键 词： | 耕地 均夷作用 多山地区 中国 土地质量 |
| 文章编号： | 1672-6316（2006）03-0259-12 |
| 收稿时间： | 2005-10-10 |
| 修稿时间： | 2006-05-05 |
Integrated indicators-based gradation of cultivated land quality in mountainous region of Southwestern China |
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| Jing’an Shao,Chaofu Wei,Deti Xie,Yan Zhou.Integrated Indicators-based Gradation of Cultivated Land Quality in Mountainous Region of Southwestern China[J].Journal of Mountain Science,2006,3(3):259-270. |
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| Authors: | Jing’an Shao Chaofu Wei Deti Xie Yan Zhou |
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| Institution: | (1) College of Resource and Environment, Southwest University, Chongqing, 400716, China;(2) Chongqing Key Lab. of Digital Agriculture, Chongqing, 400716, China;(3) College of Resource and Environment, Guizhou University, Guiyang, 550025, China |
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| Abstract: | The gradation of cultivated land is to assess the suitability of cultivated land for agricultural production in terms of natural
and economic properties of land. It can be used to evaluate sustainability of land use and soil management practices. Formal
and informal surveys, Delphi and comprehensive index method are adopted to identify appropriate integrated indicators, and
measure the gradation of cultivated land quality. The determination of integrated indicators presents three basic features
of cultivated land quality: stable plant productivity, social acceptability and maintenance of environmental quality. Pronounced
concentration-dissipation law of total function score value occurs in paddy field units, with three ranges, i.e., 79∼68.5,
68.5∼59 and 59∼51. Total function score value in dryland units mainly ranges from 40 to 70, but slight concentration-dissipation
law of each unit is still observed, with four ranges, i.e., 79∼68, 68∼51, 51∼37 and 37∼15. Paddy field quality is divided
into three gradations, and the scales are 18 220.9 ha, 5410.6 ha and 2890.9 ha. Dryland quality is classified into four gradations,
and the scales are 1548.6 ha, 8153.8 ha, 3316.3 ha and 685.2 ha. The total function score value of every gradation unit is
conformed to the results of farmers’ assessment. Research results meet with the needs of accurate degree of the gradation
of cultivated land quality. Integrated indicators-based gradation of cultivated land assessment accords with the characteristics
of land resources and human preference in the mountains of southwestern China. This study will be useful to promote the monitoring
of cultivated land quality, and to supply fine ground and knowledge for establishing appropriate cultivated land management
practices in Southwestern China. |
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| Keywords: | Integrated indicator cultivated land gradation mountainous region China |
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