作者简介:吴利杰(1982-), 男, 硕士, 助理研究员, 研究方向:第四纪地质, E-mail:
通讯作者: 于娟(1982-), 女, 硕士, 助理研究员, 研究方向:环境地质, E-mail:
收稿日期: 2015-04-15
网络出版日期: 2016-03-08
基金资助
中国地质科学院水文地质环境地质研究所基本科研业务费(SK201403)
Study on the Evolution Law of Potassium with Long Time Scale Climate Change in Jiangjun Loess Section of the Middle Reaches of the Jinghe River
Received date: 2015-04-15
Online published: 2016-03-08
吴利杰, 于娟, 石建省, 王成敏, 毕志伟, 郭娇 . 长尺度气候变化下土壤钾素演变规律的研究——以泾河中游将军村黄土剖面为例[J]. 上海交通大学学报(农业科学版), 2016 , 34(1) : 69 -73 . DOI: 10.3969/J.ISSN.1671-9964.2016.01.012
From the perspective of application of paleoclimatology, the evolution law of potassium in soil with long time scale climate change is discussed quantitatively and the main conclusions are as follows.The relationship of the content of available potassium and slowly available potassium and the annual precipitation or the annual temperature obey the exponential function model.The fitting equations of potassium effectiveness and the annual precipitation or the annual temperature accord with the parabolic function model.There is a critical value, only the average temperature(over 9.5°C)or the annual precipitation(over 577.3mm), and its effectiveness presents obviously a progressive increase with the increase of the annual precipitation or the annual temperature.The fitting relationship of the content of available potassium and slowly available potassium, potassium effectiveness and paleoclimatic coupling conditions comply with the Cobd-Douglas equations.
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