| 稻田有机肥配施的土壤环境效应评价指标体系构建 |
| |
| 作者姓名： | 刘丽媛 郑向群 张春雪 杨波 陈昢圳 徐艳 |
| |
| 作者单位： | 农业农村部环境保护科研监测所,天津 300191 |
| |
| 基金项目： | 国家重点研发计划项目（2016YFD0201200，2016YFD0201201） |
| |
| 摘 要： | 为构建稻田有机肥配施的土壤环境效应评价指标体系,采用整合分析筛选了稻田有机肥配施的土壤环境敏感因子,进一步通过变异分析、相关分析、主成分分析以及随机森林模型的耦合分析构建了稻田有机肥配施的土壤环境效应评价指标体系.整合分析从43个土壤环境指标中筛选出了26个有机肥配施的土壤环境敏感因子,包括稻田土壤容重(BD)、非毛管孔隙度、团聚体(>5、2～5、1～2、0.5～1、0.25～0.5 mm)、<0.25 mm微团聚体、pH、电导率(EC)、交换性钾离子、有机碳(SOC)、总氮(TN)、总磷(TP)、总钾(TK)、速效氮(AN)、速效磷(AP)、速效钾(AK)、土壤微生物量碳(MBC)、土壤微生物量氮(MBN)、土壤脲酶(SUE)活性、土壤转化酶(SSC)活性、土壤脱氢酶(SDH)活性、锌(Zn)、铜(Cu)、镉(Cd).对环境敏感因子进行变异分析,筛选出累计贡献率大于85％的环境敏感因子,进一步对筛选到的环境敏感因子进行相关性分析得出因子之间的相关性,通过主成分分析对因子进行分组,通过随机森林分析得出因子重要性,最后通过三者的耦合分析构建了包括BD、pH、EC、SOC、TN、AK、AP、MBC、Cd和Cu等10个指标的稻田有机肥配施的土壤环境效应评价指标体系.本研究为稻田有机肥配施的土壤环境效应评价奠定了基础,为我国土壤环境评价指标体系的构建提供了新思路.
|
| 关 键 词： | 稻田 有机肥配施 土壤环境 指标体系 环境敏感因子 整合分析 |
| 收稿时间： | 2020/12/10 0:00:00 |
Construction of the evaluation index system for soil environment of paddy fields with organic fertilizer supplementation |
| |
| Authors: | LIU Liyuan ZHENG Xiangqun ZHANG Chunxue YANG Bo CHEN Peizhen XU Yan |
| |
| Institution: | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China |
| |
| Abstract: | To develop an evaluation index system for soil environment of paddy fields with combined application of organic fertilizers, the present study employed meta-analysis to selected sensitive factors of the soil environment. The identified factors were used to construct an index system for soil environment of combined application of organic fertilizers in paddy fields through coupling of the variation analysis, correlation analysis, principal component analysis, and random forest. Of 43 soil environment factors, meta-analysis identified 26 sensitive factors: soil bulk density(BD), non-capillary porosity, aggregates(>5, 2~5, 1~2, 0.5~1, and 0.25~0.5 mm), < 0.25 mm microaggregates, pH, electrical conductivity(EC), exchangeable potassium ions, organic carbon(SOC), total nitrogen(TN), total phosphorus(TP), total potassium(TK), available nitrogen(AN), available phosphorus(AP), available potassium(AK), soil microbial biomass carbon(MBC), soil microbial biomass nitrogen(MBN), soil urease(SUE)activity, soil invertase(SSC)activity, soil dehydrogenase(SDH)activity, zinc(Zn), copper(Cu), and cadmium(Cd). The environmental sensitive factors with a cumulative contribution rate greater than 85% were selected by variation analysis. The integrated analysis of the results of the correlation analysis, principal component analysis, and random forest of the selected sensitive factors was utilized to construct the index system for soil environmental effects of combined application of organic fertilizers in paddy fields. The system was based on BD, pH, EC, SOC, TN, AK, AP, MBC, Cd, and Cu. The results of the present study provide a basis for the evaluation of soil environmental effects of combined organic fertilizer application in paddy fields, and offer a new concept for the construction of a soil environmental assessment index system. |
| |
| Keywords: | paddy field organic fertilizer application soil environment index system environmental sensitive factors meta-analysis |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《》浏览原始摘要信息 |
| 点击此处可从《》下载免费的PDF全文 |
|
