Effect of Perched Water Tables on Aluminosilicate Stability and Soil Genesis

首页> 外文期刊>土壤圈（英文版） >Effect of Perched Water Tables on Aluminosilicate Stability and Soil Genesis

【24h】

Effect of Perched Water Tables on Aluminosilicate Stability and Soil Genesis

机译：栖息的地下水位对硅铝酸盐稳定性和土壤成因的影响

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

页面导航

摘要
著录项
相关主题

摘要

The mineral stability and solute activities of soil solution extracted from selected horizons of seven studied rnpedons of Alfisols in Kentucky, USA, and the relationship between distribution of iron-manganese concretions rnand the restrictive layers were investigated. The results showed that the genesis and development of these rnsoils and mineral weathering trends were strongly influenced by the depth of bedrock and the presence of rnperched water tables at lithic (limestone) interfaces due to the dissolution and buffering effect of limestone rnbedrock. The extractable Mg/Ca ratio as depth function and soil depth above bedrock could be used as rnindices of weathering and degree of soil development. Maximum iron-manganese concretion accumulation rnwas found to occur in the horizon overlying clay horizon (＞40% clay) with a sharp increase in clay content rn(＞ 10%), which suggested that zones of Fe-Mn concretion accumulation in soils of the Inner Bluegrass Region rnappeared to be a sensitive genetic indicator of argillic horizons with restrictive permeability.

机译：研究了美国肯塔基州研究的7种Alfisols根系的选定层位中提取的土壤溶液的矿物稳定性和溶质活性，以及铁锰固结物的分布与限制层之间的关系。结果表明，由于石灰岩基岩的溶解和缓冲作用，基岩的深度和岩性（石灰岩）界面处的裂隙水位的存在强烈影响了这些岩土的成因和发育以及矿物的风化趋势。可提取的Mg / Ca比值作为深度函数和基岩之上的土壤深度可用作风化和土壤发育程度的指标。发现最大的铁锰固结堆积rn发生在上覆粘土层（＞ 40％粘土）的地层中，粘土含量rn（＞ 10％）急剧增加，这表明该地区土壤中的Fe-Mn固结堆积区域。蓝草内区似乎是具有限制性渗透性的泥质层的敏感遗传指标。

著录项

来源
《土壤圈（英文版）》 |2000年第3期|247-256|共10页
作者

展开▼
作者单位

College of Resources and Environment, Shandong Agricultural University, Tai'an 271018 China;

Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008 China;

College of Agriculture, University of Kentucky, Lexington, KY 40546-0091 USA;

展开▼
收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类
关键词
iron-manganese concretion; perched water table; soil environment; soil genesis;

机译：铁锰凝结物;地下水位;土壤环境;土壤成因;

Effect of Perched Water Tables on Aluminosilicate Stability and Soil Genesis

摘要

著录项

相关主题

期刊订阅