排灌机械工程学报
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排灌机械工程学报  2015, Vol. 33 Issue (1): 67-72    DOI: 10.3969/j.issn.1674-8530.14.0134
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基于主成分分析及GIS的环渤海区域土壤质量评价
刘广明1, 吕真真1, 杨劲松1, 李可晔2, 余世鹏1
1.中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室, 江苏 南京 210008; 2. 河北省农林科学院滨海农业研究所, 河北 曹妃甸区 063200
Quality evaluation of soil in land along Bohai Sea Coast by principal component analysis and GIS
Liu guangming1, Lü Zhenzhen1, Yang Jingsong1, Li Keye2, Yu Shipeng1
1.State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, China; 2.Institute of Coastal Agriculture, Hebei Academy of Agiculture and Forestry Sciences, Caofeidian, Hebei 063200, China
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摘要 以环渤海沿海地区为研究区域,在进行土壤详细调查的基础上,进行具有代表性样点土壤样品(0~30 cm)的采集,并对土壤的养分、盐分和质地等理化性质进行系统测定,选取土壤盐分、pH值、碱解氮、有效磷、速效钾、有机质、全氮、砂粒含量、黏粒含量为土壤质量评价指标,采用主成分分析综合得分法,结合GIS技术,进行环渤海区域土壤(0~30 cm)质量综合评价.研究结果表明:土壤有机质、全氮和黏粒含量对土壤质量产生正面影响,而土壤全盐含量、pH值及土壤砂粒含量则产生负面影响;获得了土壤质量评价的主成分得分综合模型;土壤质量综合得分在空间分布上具有明显的地带性,根据综合得分划分为6级地力等级,研究区50%以上面积属于五或六级地力水平,土壤质量低下.在此基础上,分析了各土壤质量等级的主要影响要素,可为针对性综合提升环渤海区域土壤质量提供理论依据.
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刘广明
吕真真
杨劲松
李可晔
余世鹏
关键词环渤海区域   主成分分析   土壤质量   综合评价     
Abstract: Considering the land along Bohai Sea Coast as the study field, based on a detailed survey on the field, soil samples are collected at representative points across 0-30 cm depth layer, then the physical and chemical properties, such as soil nutrient, salt and texture and so on are measured. The evaluation indexes include soil salt content, pH, nitrogen, phosphorus, potassium, organic matter, total nitrogen, sand content, clay content. Finally, principal component analysis and GIS technique are used to evaluate soil quality comprehensively. The results show that the soil organic matter, total nitrogen and clay content have a positive effect on soil quality, but the soil salt content, pH, and soil sand content have a negative impact. The composite score of soil quality is obtained and a soil quality grade is established. The study field can be divided into six fertility levels according to soil quality composite scores. It is turned out the soil quality in the study field is so poor that its more than 50% areas belong to the 5th and 6th grades. The results of the study can provide an important reference for comprehensive improvement in soil quality in the land along Bohai Sea Coast.
Key wordsBohai Sea Costal area   principal component analysis   soil quality   comprehensive evaluation   
收稿日期: 2014-08-30;
基金资助:公益性行业(海洋)科研专项经费资助项目(201105020);江苏省科技支撑计划项目(BE2013357);中国科学院知识创新工程重要方向项目(KZCX2-YW-359);国家自然科学基金资助项目(41171181,41171178)
通讯作者: 刘广明(1975—),男,山东济宁人,副研究员,博士(gmliu@issas.ac.cn),主要从事土壤盐渍化防控与农业水土工程研究.   
作者简介: 杨劲松(1959—),男,江苏靖江人,研究员,博士生导师(通信作者, jsyang@issas.ac.cn),主要从事农业土水资源利用与管理研究.
引用本文:   
刘广明,吕真真,杨劲松等. 基于主成分分析及GIS的环渤海区域土壤质量评价[J]. 排灌机械工程学报, 2015, 33(1): 67-72.
LIU Guang-Ming-,吕Zhen-Zhen-,YANG Jin-Song- et al. Quality evaluation of soil in land along Bohai Sea Coast by principal component analysis and GIS[J]. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(1): 67-72.
 
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