摘要
为了验证全国农用地分等汇总成果与原省级成果分布规律的一致性与继承性,以及汇总成果与区域本底资源匹配程度的差异程度,该文以重庆市为例,采用统计分析法和综合分析法,对重庆市农用地等别转换前后的成果进行对比研究,并分析其国家级自然等别、利用等别和经济等别的分布规律与标准耕作制度、土壤和海拔的关系。结果表明,通过以省级成果的标准粮产量作为等别的转化纽带,成功实现了省级自然等、利用等和经济等向国家级相应等别的成果转化;转化后结果显示,国家相应等别的面积比例分布规律与重庆市等别面积比例一致;转化后的国家农用地等别与区域的标准耕作制度、土壤和海拔的分析表明,在重庆市2个标准耕作制度分区内,水田类的自然等别要高于旱地类的自然等别,2个标准耕作制度间相比,渝西方山丘陵区和渝东南方低、中山区的自然等别要高于渝中平行岭谷低山区和渝东北中山区的自然等别;国家农用地自然等别、利用等别和经济等别分布与有效土层厚度、土壤有机质质量分数呈正相关,而与海拔高度呈负相关。农用地分等国家级汇总成果继承了原市级成果的等别序列,并且实现了农用地分等成果的全国统一可比,国家农用地分等汇总技术方法为实现全国统一可比的农用地分等提供了依据。
This study was designed to validate if the national agricultural land grading integrated method was correct,also toverify if the integrated national agricultural land grading was correlation with provincial natural factors.With the help ofstatistic and comprehensive analysis,we took Chongqing provincial agricultural land grading achievements as a case toanalysis the national agricultural land grading distribution law.The results showed that the difierent agricultural land gradingarea rate of the national level was similar to that of the provincial level grading,after provincial fruits was converted intonational fruits,in addition,the national agricultural land grading integrated method based on the land productivity was valid.The results also showed that the national irrigated land natural,use and economic grading were higher than that of drylandwithin the same standard cropping system.Compared with the different standard cropping system,the average nationalagricultural land grading in Yuxi low hill area and Yudong middle mountain were higher than that in Yu zhong low mountainand Yudongbei middle mountain.The national agricultural land grading was positive correlation with such natural factors assoil depth and soil organic matter contents,but was negative correlation with elevation.The national agricultural land gradingdistribution law not only inherited the order of the provincial agricultural land grading,but also in accord with the agriculturalland productivity.The national agricultural land integrating method provides a scientific basis for the agricultural fruitsconversion from provincial level to national level.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2010年第10期297-303,共7页
Transactions of the Chinese Society of Agricultural Engineering
关键词
农业
汇总
等别
农用地
转换
对比
agriculture
integration
grading
agricultural land
conversion
comparison
