土壤学课程教学改革调查与分析

通过问卷调查的形式,搜集了土壤学课程在理论内容、实验内容、实习方式与内容、授课方法及考核方法等5方面存在的不足,并结合学生的需要,从5个方面提出了具体的改革方案,以期使新一轮的教学改革更具针对性、说服力与可靠性,为教学改革提供参考。     

分形理论在土壤学研究中的应用进展

在前人研究的基础上,再次全面系统地对分形理论在土壤学中的应用进展进行综述,并在此基础上阐述了分形理论在土壤学中应用的不足和展望,创新提出了分形理论在土壤第一生产力研究和土壤气体排放研究中应用的未来新热点。     

勤于专研做学问，求真务实为土壤—— 记我国著名土壤学家黄瑞采教授

我国著名土壤学家、农业教育家黄瑞采教授终生致力于土壤科学研究及农业教育事业，为中国土壤科学的发展做出了重要贡献，在土壤地理、土壤发生分类、土壤微形态和农田生态等领域进行了长期的卓有成效的研究。本文着意梳理黄瑞采教授的成长成才过程，希望其“宁劳死于工作，不老死于牖下”的一生能感染新一代科学工作者，引领更多的后继者为中国科学事业发展作出应有的贡献。     

俄罗斯土壤学一瞥

简单介绍了俄罗斯土壤科学的现状和特点,并对其土壤学发展中的一些问题进行了探讨。     

Accounting for extensive topographic and pedologic secondary information to improve soil mapping

Soils generally vary in a quite complex way. To assess and model spatial variability, several variables can be sampled in addition to the target used to quantify and describe the main phenomenon under study. One of the major advantages of geostatistics over simpler spatialization methods is that sparsely observations of the primary attribute can be complemented by secondary attributes that are more densely sampled. Two methods were applied to incorporate dense secondary information: multicollocated cokriging, which restricts the neighbourhood to the only secondary data collocated with the available data of the primary variable and simple cokriging with varying local means related to crisp classes. The objective of this paper was to find the method that best improves the estimation of primary attributes through dense secondary information for the study area, which was the province of Siena in central Italy, an area of about 3820 km². Soil samples were taken at 742 locations and depth, sand and clay contents and available water capacity were determined.     

分形几何在土壤学中的应用及其展望

本文介绍了在土壤学中得到应用的分形几何理论的主要内容,论述了分形理论在土壤学中的应用,根据土壤数据的分形结构和性质,探讨了分形理论应用于土壤学的途径和前景。