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Forests 2016, 7(11), 267; doi:10.3390/f7110267

Spatial Distribution of Soil Nitrogen, Phosphorus and Potassium Stocks in Moso Bamboo Forests in Subtropical China

Key laboratory of Bamboo and Rattan, International Centre for Bamboo and Rattan, Beijing 100102, China
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Authors to whom correspondence should be addressed.
Academic Editors: Scott X. Chang and Xiangyang Sun
Received: 15 August 2016 / Revised: 24 October 2016 / Accepted: 31 October 2016 / Published: 7 November 2016
(This article belongs to the Special Issue Nutrient Cycling and Plant Nutrition in Forest Ecosystems)
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Abstract

Moso bamboo is famous for fast growth and biomass accumulation, as well as high annual output for timber and bamboo shoots. These high outputs require high nutrient inputs to maintain and improve stand productivity. Soil nitrogen (N), phosphorus (P), and potassium (K) are important macronutrients for plant growth and productivity. Due to high variability of soils, analysing spatial patterns of soil N, P, and K stocks is necessary for scientific nutrient management of Moso bamboo forests. In this study, soils were sampled from 138 locations across Yong’an City and ordinary kriging was applied for spatial interpolation of soil N, P, and K stocks within 0–60 cm. The nugget-to-sill ratio suggested a strong spatial dependence for soil N stock and a moderate spatial dependence for soil P and K stocks, indicating that soil N stock was mainly controlled by intrinsic factors while soil P and K stocks were controlled by both intrinsic and extrinsic factors. Different spatial patterns were observed for soil N, P, and K stocks across the study area, indicating that fertilizations with different ratios of N:P:K should be applied for different sites to maintain and improve stand productivity. The total soil N, P, and K stocks within 0–60 cm were 0.624, 0.020, and 0.583 Tg, respectively, indicating soils were important pools for N, P, and K. View Full-Text
Keywords: ordinary kriging; geostatistical analysis; spatial variability; Moso bamboo ordinary kriging; geostatistical analysis; spatial variability; Moso bamboo
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Tang, X.; Xia, M.; Guan, F.; Fan, S. Spatial Distribution of Soil Nitrogen, Phosphorus and Potassium Stocks in Moso Bamboo Forests in Subtropical China. Forests 2016, 7, 267.

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