基于灰色关联度的石漠化地区土壤质量评价
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摘要
[目的]采取科学的评价方法,客观准确评价土壤质量,为石漠化地区预防土壤退化和改善土壤质量提供参考。[方法]以湖北省鹤峰县石漠化地区为研究对象,综合测定了土壤的物理、化学和生物性质的18项土壤属性指标,利用主成分分析和相关性分析,确定评价指标的最小数据集,结合熵权法确定参评指标的权重值,并运用灰色关联度分析法计算加权关联度值。[结果]根据加权关联度值的大小排序来看,研究区的土壤质量高低依次为:下坪>中营>燕子>五里>走马;结合土壤质量评判标准表可得,下坪的土壤质量等级为Ⅱ级,中营为Ⅲ级,燕子和五里均为Ⅳ级,走马为Ⅴ级;且研究区整体的土壤质量属于中等偏下的水平与当地实际情况相一致。[结论]本文的研究方法可以客观公正的评价土壤质量,且该方法计算简便、思路清晰,为土壤质量评价提供了一种新的尝试。
[Objective]This paper aimed to evaluate soil quality objectively and accurately by scientific evaluation methods,which could provide references for preventing soil degradation and improving soil quality in rocky desertification areas.[Method]Taking the rocky desertification area of Hefeng county in Hubei province as the research object,18 soil attribute indexes of physical,chemical and biological properties of soil were determined comprehensively.The minimum data set of evaluation indexes was determined by principal component analysis and correlation analysis.The weighted values of evaluation indexes were determined by entropy weight method,and the weighted correlation values were calculated by grey correlation analysis method.[Result]According to the ranking of the weighted correlation degree,the order of soil quality in the study area was Xiaping>Zhongying>Swallow>Wuli>Walking Horse.According to the standard table of soil quality evaluation,the grade of soil quality in Xiaping was grade Ⅱ,Zhongying was grade III,Swallow and Wuli were grade IV,Walking Horse was grade V,and the overall soil quality in the study area was of grade V and consistent with local situation.[Conclusion]The method in this paper can objectively and impartially evaluate soil quality and is simple in calculation and clear in thinking,which provides a new attempt for soil quality evaluation.
[Objective]This paper aimed to evaluate soil quality objectively and accurately by scientific evaluation methods,which could provide references for preventing soil degradation and improving soil quality in rocky desertification areas.[Method]Taking the rocky desertification area of Hefeng county in Hubei province as the research object,18 soil attribute indexes of physical,chemical and biological properties of soil were determined comprehensively.The minimum data set of evaluation indexes was determined by principal component analysis and correlation analysis.The weighted values of evaluation indexes were determined by entropy weight method,and the weighted correlation values were calculated by grey correlation analysis method.[Result]According to the ranking of the weighted correlation degree,the order of soil quality in the study area was Xiaping>Zhongying>Swallow>Wuli>Walking Horse.According to the standard table of soil quality evaluation,the grade of soil quality in Xiaping was grade Ⅱ,Zhongying was grade III,Swallow and Wuli were grade IV,Walking Horse was grade V,and the overall soil quality in the study area was of grade V and consistent with local situation.[Conclusion]The method in this paper can objectively and impartially evaluate soil quality and is simple in calculation and clear in thinking,which provides a new attempt for soil quality evaluation.
引文
[1]张华,张甘霖.土壤质量指标和评价方法[J].土壤,2001(6):326-330,333.
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[4]郑茂.湘西北石漠化地区土壤理化特征及土壤质量评价[D].长沙:中南林业科技大学,2016.
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[9]刘金山,胡承孝,孙学成,等.基于最小数据集和模糊数学法的水旱轮作区土壤肥力质量评价[J].土壤通报,2012,43(5):1145-1150.
[10]邓雪,李家铭,曾浩健,等.层次分析法权重计算方法分析及其应用研究[J].数学的实践与认识,2012,42(7):93-100.
[11]曹承绵,严长生,张志明,等.关于土壤肥力数值化综合评价的探讨[J].土壤通报,1983(4):13-15.
[12]刘智超,赵姚阳.基于灰色关联法和熵值法的南京市土地集约利用影响因素分析[J].广东农业科学,2014,41(1):188-192.
[13]王学萌,张继忠,王荣.灰色系统分析及实用计算程序[M].武汉:华中科技大学出版社,2001.
[14]李月芬,汤洁,李艳梅.用主成分分析和灰色关联度分析评价草原土壤质量[J].世界地质,2004(2):169-174,200.
[2]钟杰.湘中石漠化地区土壤肥力质量综合评价[D].长沙:中南林业科技大学,2013.
[3]田涟祎.石漠化地区土壤性质对不同土地利用方式的响应研究[D].贵阳:贵州师范大学,2016.
[4]郑茂.湘西北石漠化地区土壤理化特征及土壤质量评价[D].长沙:中南林业科技大学,2016.
[5]李孝良,陈效民,周炼川,等.西南喀斯特石漠化过程对土壤水分特性的影响[J].水土保持学报,2008(5):198-203.
[6]鲁如坤.土壤农业化学发析方法[M].北京:中国农业科技出版社,2000.
[7]关松荫.土壤酶及其研究法[M].北京:农业出版社,1986:206-239.
[8]贡璐,张雪妮,冉启洋.基于最小数据集的塔里木河上游绿洲土壤质量评价[J].土壤学报,2015,52(3):682-689.
[9]刘金山,胡承孝,孙学成,等.基于最小数据集和模糊数学法的水旱轮作区土壤肥力质量评价[J].土壤通报,2012,43(5):1145-1150.
[10]邓雪,李家铭,曾浩健,等.层次分析法权重计算方法分析及其应用研究[J].数学的实践与认识,2012,42(7):93-100.
[11]曹承绵,严长生,张志明,等.关于土壤肥力数值化综合评价的探讨[J].土壤通报,1983(4):13-15.
[12]刘智超,赵姚阳.基于灰色关联法和熵值法的南京市土地集约利用影响因素分析[J].广东农业科学,2014,41(1):188-192.
[13]王学萌,张继忠,王荣.灰色系统分析及实用计算程序[M].武汉:华中科技大学出版社,2001.
[14]李月芬,汤洁,李艳梅.用主成分分析和灰色关联度分析评价草原土壤质量[J].世界地质,2004(2):169-174,200.