底泥柱中营养物质的垂直变化揭示了人为影响。

The vertical variation of nutrients in a sediment core of Delong Lake reveals the anthropogenic effect.

机构信息

Key Laboratory of Remote Sensing for Monitoring Geographic Environment, College of Heilongjiang Province, Harbin Normal University, No. 1 South Shida Road, Limin Economic Development Zone, Harbin, 150025, Heilongjiang, People's Republic of China.

出版信息

Ecotoxicology. 2014 May;23(4):480-5. doi: 10.1007/s10646-014-1198-6. Epub 2014 Jan 28.

DOI:10.1007/s10646-014-1198-6

PMID:24468926

Abstract

Phosphorus content and its species were studied for the core sediments of Delong Lake, using the SMT sequential extraction method, and then were correlated to the contents of total nitrogen and organic matter. According to (210)Pb and (137)Cs dating, the historical profiles of 33 cm core sediments were generated. The objective of this study was to understand how nutrients of lake sediments evolved in order to get insights into the effect of human activities on their sedimentary history. The nutrients contents in the core sediments slowly increased after 1957, showing the human activity influence the natural deposition of the lake sediment. From 1978 to 1985, various nutrients in the lake sediment rapid increased, showing that the human activities strengthened. From 2003 to now, most of nutrients in the sediment rapidly increased and significantly modified the natural deposition of the lake sediment.

摘要

采用 SMT 连续提取法研究了德龙湖岩芯沉积物中的磷含量及其形态，并将其与总氮和有机质含量相关联。根据（210）Pb 和（137）Cs 测年，生成了 33 厘米岩芯沉积物的历史剖面。本研究的目的是了解湖泊沉积物中养分的演变情况，以便深入了解人类活动对其沉积历史的影响。岩芯沉积物中的养分含量在 1957 年后缓慢增加，表明人类活动影响了湖泊沉积物的自然沉积。从 1978 年到 1985 年，湖泊沉积物中的各种养分迅速增加，表明人类活动增强。从 2003 年到现在，沉积物中的大部分养分迅速增加，显著改变了湖泊沉积物的自然沉积。