[1]LIU Di,Dengqiang,SHI Xinrong,et al.Responses of Phosphatase Activity in Rhizosphere and Non-rhizosphere Soils to Simulated Precipitation Changes in Planted Robinia pseudoacacia Forest on the Loess Plateau[J].Research of Soil and Water Conservation,2020,27(01):95-103.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 01
Page number:
95-103
Column:
Public date:
2020-02-20
- Title:
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Responses of Phosphatase Activity in Rhizosphere and Non-rhizosphere Soils to Simulated Precipitation Changes in Planted Robinia pseudoacacia Forest on the Loess Plateau
- Author(s):
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LIU Di1,2, Dengqiang3, SHI Xinrong1,3, YUAN Zhiyou1,3
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(1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China; 2.College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China; 3.Institute of Soil and Water Conservation, Chinese Academy of Sciences and ministry of Water Resources, Yangling, Shaanxi 712100, China)
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- Keywords:
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precipitation; phosphatase activities; rhizosphere soil; non-rhizosphere soil; Loess Plateau; planted forests; soil and water conservation; manipulative experiments.
- CLC:
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S718.5
- DOI:
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- Abstract:
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This study investigated the responses of phosphatase in rhizosphere and non-rhizosphere soils in a planted Robinia pseudoacacia forest on the Loess Plateau via a manipulative throughfall experiment. Increased precipitation enhanced the phosphatase activities in rhizosphere soils by 55.9% and 88.3% in 0—20 and 20—40 cm layers, respectively. Increased precipitation also enhanced the phosphatase activities in non-rhizosphere soils by 109% and 121%, respectively. In contrast, deceased precipitation was not significantly lower than the control but obviously lower than increased precipitation. The difference of soil phosphatase activity between rhizosphere and non-rhizosphere in 0—20 cm layer was not significant across the precipitation gradients, but significant across the drought gradients. Soil phosphatase activity was positively correlated with both soil water content and soil organic phosphorus content. These results indicated that precipitation increase more affected the soil phosphatase activities than drought in a short time in semi-arid region. Changing precipitation affected soil phosphatase activity through impact on soil moisture, soil organic phosphorus and biomass. It was important for vegetation restoration in planted forest on the loess under global climate change to study the influence of precipitation on soil phosphatase activity.