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北京地区不同土纲典型剖面的土壤微形态特征 被引量:6
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作者 张晓娜 王数 +3 位作者 王秀丽 王瑞 刘颖 杨震 《土壤》 CAS CSCD 北大核心 2016年第3期565-573,共9页
以北京地区不同土纲典型剖面为例,通过观察土壤薄片,利用ENVI图像统计分析功能,从土壤微结构、粗骨颗粒、土壤形成物与孔隙几个方面研究其微形态特征。结果表明:北京地区不同土纲典型剖面土壤之间微形态差异明显。淋溶土典型剖面土壤发... 以北京地区不同土纲典型剖面为例,通过观察土壤薄片,利用ENVI图像统计分析功能,从土壤微结构、粗骨颗粒、土壤形成物与孔隙几个方面研究其微形态特征。结果表明:北京地区不同土纲典型剖面土壤之间微形态差异明显。淋溶土典型剖面土壤发育完全,Bt层常见到黏粒淀积胶膜;雏形土与新成土土壤微结构发育程度较低,没有淀积黏粒存在,但雏形土形成了B层,存在孔洞状结构,钙积现象明显,土壤发育较新成土成熟。人为土明显表现出大量人类活动的痕迹,侵入物、动植物遗迹多见,土壤发育最为成熟。 展开更多
关键词 土壤微形态特征 土纲 典型剖面 北京地区
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不同棚龄大棚土壤微形态特征研究 被引量:8
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作者 夏艳玲 东野光亮 《云南农业大学学报》 CAS CSCD 2003年第4期340-342,366,共4页
从微观角度研究分析不同棚龄的蔬菜大棚土壤的微形态特征,结果表明大棚土壤微形态结构随种植时间、耕作管理措施而产生较大变化。为大棚蔬菜生长发育创造良好环境条件提供了相关的理论依据。
关键词 蔬菜 棚龄 大棚 土壤微形态特征
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不同改良措施下砂质土壤肥力的微形态评价——以内蒙古科尔沁沙地为例 被引量:3
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作者 刘颖 王数 +4 位作者 张凤荣 吕贻忠 李珍珍 毛率垒 任娜欧 《土壤》 CAS CSCD 北大核心 2017年第5期1023-1031,共9页
本文以内蒙古通辽市科尔沁左翼后旗巴胡塔镇乌旦塔拉村为试验区,选取13个土壤微形态指标,利用Photoshop、土壤切片图像处理分析系统、Image-pro plus 6.0软件对土壤微形态图像进行处理,采用定性、定量相结合的方法对不同改良处理后的砂... 本文以内蒙古通辽市科尔沁左翼后旗巴胡塔镇乌旦塔拉村为试验区,选取13个土壤微形态指标,利用Photoshop、土壤切片图像处理分析系统、Image-pro plus 6.0软件对土壤微形态图像进行处理,采用定性、定量相结合的方法对不同改良处理后的砂质土壤肥力进行评价,在此基础上建立了砂质土壤肥力评价的微形态指标最小数据集(MDS)。得出以下结论:与对照组单元1相比,其他各个单元的土壤结构体、粗骨颗粒等微形态特征变化不显著。单元10(黏土、有机肥、腐殖酸施加量分别为3.00×10~5、3.00×10~4、7.50×10~3 kg/hm^2)中土壤黏粒最多、基质比最大、有机物质频率最高;土壤孔隙状况以及毛管孔隙发育最好的单元分别是单元8和单元13(黏土、有机肥、腐殖酸施加量分别是单元8:1.50×105、3.00×10~4、1.125×10~4 kg/hm^2,单元13:7.50×10~4、3.00×10~4、3.75×103 kg/hm^2)。准则层指标土壤基质、土壤孔隙、有机物质、土壤结构体、粗骨颗粒的权重分别为0.336、0.253、0.203、0.124、0.084。砂质土壤肥力评价的最小数据集包括基质比、基质类型、基质颜色、毛管孔隙占比、孔隙类型、有机物质类型、粗骨颗粒平均粒径7个指标,MDS评价结果与原始评价结果呈显著的线性相关关系,因此实际评价砂质土壤肥力时,可以MDS的7个微形态指标代替原始的13个指标。 展开更多
关键词 砂质土壤肥力 土壤微形态特征 最小数据集 内蒙古 科尔沁沙地
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Zonal Distribution of the Erosion-Landslide and Soil Micromorphological Features in Purple Hilly Region 被引量:6
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作者 HEYurong LIAOChaolin XUPei ZHANGBaohua 《Journal of Mountain Science》 SCIE CSCD 2005年第1期42-49,共8页
In the purple hilly region, erosions and landslides are all serious, and it is of great scientific value and practical significance to study their formation mechanism and distribution features there. In this paper, so... In the purple hilly region, erosions and landslides are all serious, and it is of great scientific value and practical significance to study their formation mechanism and distribution features there. In this paper, soil micromorphological methods and techniques were used to study the erosion zonal distribution in the region. The results indicated: (1) According to erosion process, the spacial distribution zones of the erosions and landslides in the purple hilly region with different solums were divided into scouring erosion zone, transport-diffusion zone, rocks and soil turbulence zone and sediment-bury zone; (2) The soil micromorphologic taxonomic feature identifying different erosion-landslide zone were found by studying the soil micromorphology of erosive zone in purple hilly region; (3) As for the erosion–landslide formation in the region, besides the external factors, the internal factors were found more important and favorable for landslide formation through the studies on the micormorphological features of slide soil. 展开更多
关键词 Purple hilly region erosion-landslide zonal distribution soil micromorphology
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Micromorphological Features of Diagnostic Horizons in Several soils in Southwest China: Implication for Soil Taxonomic Classification 被引量:5
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作者 XU Xiangming HE Yurong +1 位作者 HUANG Chengmin XIONG Donghong 《Journal of Mountain Science》 SCIE CSCD 2010年第1期73-82,共10页
The comparative studies on micromorphological features in diagnostic horizons of Stagnic Anthrosols, Ustic Ferrosols and Ustic Vertosols in southwestern China were conducted to underpin the rationale for Chinese Soil ... The comparative studies on micromorphological features in diagnostic horizons of Stagnic Anthrosols, Ustic Ferrosols and Ustic Vertosols in southwestern China were conducted to underpin the rationale for Chinese Soil Taxonomy. The following findings were explored: (1) Stagnic Anthrosols had the specific micromorphological features, e.g., the humic formation in anthrostagnic epipedon, the platy structures in plow subhorizon, the secondary formation of ferromanganese and the weakly optical-orientation clay domains in hydragric horizon, etc.: (2) The groundmasses of ferric horizon in Ustic Ferrosols appeared in hue of 2.5YR or redder, and had pellicular grain structure; (3) Ustic Vertosols had a crust horizon (Acr), and crack structure dominated in Acr and angular blocky structure in disturbed horizon; (4) Because of the distinct differences in micromorphological features among these three soils, the specific micromorphological features might be employed as diagnostic horizons to differentiate soils while the quantifiable micromorphological features might potentially be selected as diagnostic indices for Chinese soil taxonomic classification. 展开更多
关键词 Soil micromorphology Soil diagnostic horizon Chinese Soil Taxonomy Southwestern China
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