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[1]ZHU Haiqiang,LI Yanhong,ZHANG Xiaomeng.Spatial Variability of Soil Total Phosphorus in Different Plant Communities of Ebinur Lake Wetland[J].Research of Soil and Water Conservation,2017,24(05):45-50.

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Spatial Variability of Soil Total Phosphorus in Different Plant Communities of Ebinur Lake Wetland

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 05 Page number: 45-50 Column: Public date: 2017-10-28

Title:: Spatial Variability of Soil Total Phosphorus in Different Plant Communities of Ebinur Lake Wetland

Author(s):: ZHU Haiqiang^1,2, LI Yanhong^1,2, ZHANG Xiaomeng^1,2; 1. College of Geographic Science and Tourism, Xinjiang Normal University, Urumqi 830054, China;
2. Key Laboratory of Xinjiang Uygur Autonomous Region, Xinjiang Laboratory of Lake Environment and Resources in Arid Area, Urumqi 830054, China

Keywords:: Ebinur Lake; total phosphorus; spatial variability; Kriging

CLC:: S153.6⁺1;X825

DOI:: -

Abstract:: Soil phosphorus is the necessary element for plant growth. Understanding the content and spatial distribution of total phosphorus in soil can provide a scientific basis for the evaluation of soil fertility and ecological restoration of wetland ecosystem. The wetland in Lake Ebinur was selected as the study area. In August 2015, 296 soil samples were collected in circle of Lake about 160 km. Soil total phosphorus contents were examined by geostatistical analysis method in order to reveal the spatial distributions of different plant communities. Results showed that soil total phosphorus contents ranged from 0.46 to 1.64 g/kg and decreased in the order: Haloxylon communities > Haloxylon-Tamarix communities > Phragmites communities > Euphratica communities, soil total phosphorus contents were significantly different in different communities. With the exception of Euphratica and Haloxylon-Tamarix communities, contents of soil total phosphorus generally decreased with increase of depth in other communities. Significant differences were observed for soil total phosphorus contents in different soil layers. The optimal fitting model of total phosphorus is Gaussian in Haloxylon community and Haloxylon-Tamarix community while spherical model can describe the distribution of soil total phosphorus in Euphratica community and Phragmites community, the spatial variation of total phosphorus is strong and influenced by structural factors such as parent material, terrain and climate. The correlation between total phosphorus and soil moisture in Phragmites community was negative while the correlations were positive in the others. The correlation between total phosphorus and pH value in Haloxylon-Tamarix community was negative while the correlations were positive in the others. Overall, the total phosphorus content in Ebinur Lake wetland presents obvious spatial distribution, which is closely related to vegetation patterns, pH value and soil moisture.

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