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Forests 2015, 6(7), 2307-2323; doi:10.3390/f6072307

Enhanced Soil Carbon Storage under Agroforestry and Afforestation in Subtropical China

1,†
,
2,†,* , 1
,
1,†,* and 1
1
Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
2
Department of Forest Resources Management, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Academic Editors: P. K. Ramachandran Nair and Eric J. Jokela
Received: 20 March 2015 / Revised: 8 April 2015 / Accepted: 23 June 2015 / Published: 1 July 2015
View Full-Text   |   Download PDF [241 KB, uploaded 1 July 2015]   |  

Abstract

Soil carbon (C) in three Ginkgo (Ginkgo biloba L.) agroforestry systems, afforestation (Ginkgo alone; G), and an agricultural cropping system were compared over a five-year period. The agroforestry systems were Ginkgo + Wheat (Triticum aestivum L.) + Peanut (Arachis hypogaea L.; GWP); Ginkgo + Mulberry (Morus alba L.; GM); and Ginkgo + Rapa (Brassica napus L.) + Peanut (GRP). The agricultural system consisted of wheat and peanut (WP). Total soil carbon (TSC), soil organic (SOC) and inorganic carbon (SIC), and the pools of five SOC chemical fractions were measured. TSC and SOC were always lower under WP than the G-based planting systems, and TSC in the latter increased significantly across years in the top 20 cm. Stocks of SIC under WP were significantly greater than the G-based systems, whereas SOC fractions tended to be lower. Most fractions increased across years but not in WP. View Full-Text
Keywords: Ginkgo biloba; agroecosystem; agroforestry; afforestation; soil carbon; organic carbon; inorganic carbon; carbon fraction Ginkgo biloba; agroecosystem; agroforestry; afforestation; soil carbon; organic carbon; inorganic carbon; carbon fraction
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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MDPI and ACS Style

Wang, G.; Welham, C.; Feng, C.; Chen, L.; Cao, F. Enhanced Soil Carbon Storage under Agroforestry and Afforestation in Subtropical China. Forests 2015, 6, 2307-2323.

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