Relationship between water-stable aggregates and nutrients in black soils after reclamation

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	Relationship between water-stable aggregates and nutrients in black soils after reclamation
	Qiang, M ; Wan-Tai, Y ; Shao-Hua, Z ; Lu, M
刊名	PEDOSPHERE
	2007
卷号	17 期号:4 页码:538-544
关键词	black soils nutrients reclamation water-stable aggregates
ISSN号	1002-0160
通讯作者	Wan-Tai, Y, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China
中文摘要	Water-stable aggregates, which are an index for the evaluation of the structural properties of the soil, are affected by many factors. Zhaoguang Farm, Longzhen Farm, and Jiusan Farm were chosen as the representative study sites in the region of black soils, a typical soil resource in Northeast China. The variation in the content of > 0.25 mm water-stable aggregates and its relationship with the nutrients in black soil were investigated after different years of reclamation. The results showed that the > 0.25 mm water-stable aggregates were more in the surface than in the subsurface soil and they changed in the following order: Longzhen Farm > Zhaoguang Farm > Jiusan Farm. The water-stable aggregates decreased sharply at the initial stage of reclamation and then became stable gradually with time. They were significantly correlated with the contents of organic C, total N, total P, and CEC in black soil, with the correlation coefficients r being 0.76, 0.68, 0.61, and 0.81 (P < 0.01), respectively; however, their relationships with available P, available K, and total K were unclear. These showed that organic matter was the cementation of soil water-stable aggregates. Increasing decompositions and decreasing inputs of organic matter after reclamation were responsible for the amount of reduction of the water-stable aggregates. Thus, to maintain good soil aggregate structure, attention should be paid to improvement of soil nutrient status, especially the supply of organic C and N.
学科主题	Soil Science
收录类别	SCI
语种	英语
WOS记录号	WOS:000248468900015
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54653]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
推荐引用方式 GB/T 7714	Qiang, M,Wan-Tai, Y,Shao-Hua, Z,et al. Relationship between water-stable aggregates and nutrients in black soils after reclamation[J]. PEDOSPHERE,2007,17(4):538-544.
APA	Qiang, M,Wan-Tai, Y,Shao-Hua, Z,&Lu, M.(2007).Relationship between water-stable aggregates and nutrients in black soils after reclamation.PEDOSPHERE,17(4),538-544.
MLA	Qiang, M,et al."Relationship between water-stable aggregates and nutrients in black soils after reclamation".PEDOSPHERE 17.4(2007):538-544.