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JOURNAL OF NATURAL RESOURCES >

2012 , Vol. 27 >Issue 11: 1899 - 1907

DOI: https://doi.org/10.11849/zrzyxb.2012.11.009

Characteristics of Achnatherum splendens Tussock Fertile Island

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  • 1. College of Pratacultural Science, Gansu Agricultural University, Lanzhou 730070, China;
    2. Key Laboratory of Grassland Ecosystem, Ministry of Education; Sino-US Center for Grazingland Ecosystem Sustainability, Lanzhou 730070, China

Received date: 2012-01-07

  Revised date: 2012-04-23

  Online published: 2012-11-20

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Abstract

The Achnatherum splendens tussock fertile island was studied in Qilian Mountains. The results showed that: 1) The soil nutrient in the crown width of Achnatherum splendens tussock was more than that in the tussock gap. 2) A common variation pattern was found that the some soil nutrient contents, including organic matter, total nitrogen, total phosphorus, available nitrogen, available phosphorus, available potassium, available zinc, available manganese and available iron, decreased firstly and then increased along with the distance from the centre of tussock to the edge of tussock. 3) Other soil indices showed their own variation pattern: Total potassium content varied in different soil layers; pH value increased within 0-10 cm and 10-20 cm layers, and decreased within 20-30cm layer. Available copper content continuously decreased within 0-10 cm and 10-20 cm layers, and firstly decreased and then increased in 20-30 cm. Generally, the variation pattern of soil nutrient in Achnatherum splendens tussock varied in terms of different nutrients or properties.

Key words： soil nutrient; Achnatherum splendens tussock; fertile island

Cite this article

ZHANG Sheng-ying, ZHANG De-gang, CHEN Jian-gang, XU Chang-lin, LIU Xiao-ni, ZHANG Hu . Characteristics of Achnatherum splendens Tussock Fertile Island[J]. JOURNAL OF NATURAL RESOURCES, 2012 , 27(11) : 1899 -1907 . DOI: 10.11849/zrzyxb.2012.11.009

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