Using Organic Matter and pH to Estimate the Bulk Density of Afforested/Reforested Soils in Northwest and Northeast China

doi:10.1002/2017GB005714

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	Using Organic Matter and pH to Estimate the Bulk Density of Afforested/Reforested Soils in Northwest and Northeast China
	Chen Yue; Huang Yao; Sun Wenjuan
刊名	PEDOSPHERE
	2017
卷号	27 期号:5 页码:890-900
关键词	Adams equation regression model soil bulk density soil organic carbon soil pH
ISSN号	1002-0160
DOI	10.1002/2017GB005714
文献子类	Article
英文摘要	Regression models for predicting soil bulk density (BD) have usually been related to organic matter content, but it remains unknown whether soil acidity modifies this relationship, particularly for afforested/reforested soils. We measured soil BD along with organic matter content and pH in an afforested/reforested area in Northwest and Northeast China. Using these measurements, we parameterized and validated three BD models: the Adams equation, and exponential and radical models. Model validation showed that the Adams equation failed to predict the BD of the afforested/reforested soils, producing a large overestimation. Incorporation of soil pH into the Adams equation significantly improved its performance. The exponential and radical models parameterized by the measured data simulated soil BD quite well, particularly when soil pH was incorporated. However, incorporation of soil texture variables into these models did not improve model performance compared with the pH-modified models. This led to the conclusion that the Adams equation, exponential, and radical models with pH modification are applicable to afforested/reforested soils with various acidities.
学科主题	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
电子版国际标准刊号	2210-5107
出版地	BEIJING
WOS关键词	LAND-USE CHANGE ; PEDOTRANSFER FUNCTIONS ; CARBON SEQUESTRATION ; TERRESTRIAL ECOSYSTEMS ; CHEMICAL-PROPERTIES ; CLIMATE-CHANGE ; FOREST SOILS ; STORAGE ; AFFORESTATION ; MODELS
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000409481500009
资助机构	National Basic Research Program of ChinaNational Basic Research Program of China [2014CB954004] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31370492]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/22248]
专题	植被与环境变化国家重点实验室
作者单位	Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Chen Yue,Huang Yao,Sun Wenjuan. Using Organic Matter and pH to Estimate the Bulk Density of Afforested/Reforested Soils in Northwest and Northeast China[J]. PEDOSPHERE,2017,27(5):890-900.
APA	Chen Yue,Huang Yao,&Sun Wenjuan.(2017).Using Organic Matter and pH to Estimate the Bulk Density of Afforested/Reforested Soils in Northwest and Northeast China.PEDOSPHERE,27(5),890-900.
MLA	Chen Yue,et al."Using Organic Matter and pH to Estimate the Bulk Density of Afforested/Reforested Soils in Northwest and Northeast China".PEDOSPHERE 27.5(2017):890-900.