Soil Nutrients Patterns along Plant Productivity and Soil Depth Gradients under Reaumuria soongorica Shrub in Semi-arid of the Loess Plateau

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外文摘要：It was little known about the changes in nutrients patterns along plant productivity and soil depth gradients in the Loess Plateau of China。 In this paper soil moisture content， pH， soil organic carbon (SOC) and total nitrogen (TN) at three soil layers (0-10 cm;10-20 cm;20-40 cm) along 5 plant biomass gradients of a super-xerophytic shrub Reaumuria soongorica were investigated。 The results showed that soil pH varied in a slightly alkaline from 7。78 to 8。22， and there were closely positive correlation between plant biomass and SOC， TN (P<0。01)， and soil chemical properties were evidently influenced with higher plant biomass。 SOC， TN under deferent plant biomass were highest in the top soil layer (010 cm) and decreased with soil depth， but soil moisture content increased with depth， this was probably because of not only soil drought on top jayer but also soil particle caused by soil erosion and desert plant growth characteristic。

外文关键词：

plant biomassplant Productivitysoil nutrientsReaumuria soongoricasemi-arid of the Loess Plateau

作者：

Bingru Liu、Xiuzhen Zhang

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作者单位：

Key Lab of Restoration and Reconstruction of Degraded Ecosystem in Northwest China, Ministry of Education Ningxia University Yirichuan, China

Key Lab of Restoration and Reconstruction of Degraded Ecosystem in Northwest China, Ministry of Education Ningxia University Yinchuan, China

会议名称：

International conference on agricultural engineering and food engineering

会议地点：

Harbin(CN)

会议母体文献：

The 2012 international conference on agricultural engineering and food engineering

页码：

536-539

出版时间：

2012