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题名: Establishment of Elymus natans improves soil quality of a heavily degraded alpine meadow in Qinghai-Tibetan Plateau,China
作者: Ruizhang Feng ; Ruijun Long ; Zhanhuan Shang ; Yushou Ma ; Shikui Dong ; Yanlong Wang
刊名: Plant and Soil
出版日期: 2010-02-15
卷号: 327, 期号:1, 页码:403-411
中文摘要: Abstract Elymus natans is a dominant native species widely planted to restore the heavily degraded alpine meadows in Qinghai-Tibetan plateau. The objective of this study was to determine how E. natans establishment affected the quality and fertility of a heavily degraded soil. Soil samples (at depths of 0–10, 10–20 and 20–30 cm) were collected from the 3- and 7-year-old E. natans re-vegetated grasslands, and in the heavily degraded alpine meadow (control). The establishment of E. natans promoted plant cover and aboveground biomass. Compared to the non-reseeded meadow, the concentration of total organic C increased by 13% in the soil under 3-year-old reseeded E. natans grassland at 0–10 cm, and by 7–33% in the soil under 7-year-old reseeded E. natans grassland at 0–10, 10–20 and 20–30 cm depths. Rapid increases in total and available N were also observed in two E. natans re-vegetated grasslands, especially in the 0–10 cm soil layer. Across three sampling depths, total P concentration was increased by 17–35% and 18–54% in 3- and 7-year-old reseeded soil respectively, compared to the soil of control. After 3 years of E. natans growth, microbial biomass C increased by 13–58% at 0–10 and 10–20 cm layers; while it increased by 43–87% in 7-year-old reseeded treatment at 0–10, 10–20 and 20–30 cm depths relative to control. A similar increasing trend was observed for microbial biomass N and P generally. Significant increase in neutral phosphatase, urease, catalase and dehydrogenase was also found in 3- and 7-year-old re-vegetated grasslands compared with heavily degraded meadow. Our results suggest a significant positive impact of E. natans establishment on soil quality. Thus, E. natans establishment could be an effective and applicable measure in restoring heavily degraded alpine meadow in the region of Qinghai-Tibetan Plateau
收录类别: SCI
内容类型: 期刊论文
URI标识: http://210.75.249.4/handle/363003/2034
Appears in Collections:中国科学院西北高原生物研究所_期刊论文

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Ruizhang Feng;Ruijun Long;Zhanhuan Shang;Yushou Ma;Shikui Dong;Yanlong Wang.Establishment of Elymus natans improves soil quality of a heavily degraded alpine meadow in Qinghai-Tibetan Plateau,China,Plant and Soil,2010,327(1):403-411
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