NDLI: Soil properties following reforestation or afforestation of marginal cropland

Content Provider	Springer Nature Link
Author	Sauer, Thomas J. James, David E. Cambardella, Cynthia A. Hernandez Ramirez, Guillermo
Copyright Year	2012
Abstract	Reforestation or afforestation of marginal agricultural lands offers opportunities to sequester soil organic carbon (SOC), improve the quality of degraded soils, and provide ecosystem services. The objectives of this study were to identify the extent and distribution of marginally productive cropland in the state of Iowa and to quantify the changes in SOC and relevant soil properties following tree planting.A geographic information system (GIS) analysis was used to identify 1.05 million ha of marginal cropland within the state. Soil samples were collected from four locations with (<51 yr-old) forest plantations and adjacent crop fields. Soil samples were analyzed for SOC, total nitrogen (TN), pH, cation exchange capacity (CEC), ammonium acetate-extractable K, Ca, Mg, and Na, and particle size.The forested soils had 30.0 ± 5.1 % (mean±standard error) more SOC than the tilled cropland. The average annual change in SOC following tree planting was estimated to be 0.56 ± 0.05 Mg C ha$^{−1}$ yr$^{−1}$. Differences were observed in several soil properties but strong correlations with SOC content were only observed for bulk density and extractable Ca.These results indicate that within 5 decades of tree planting on former cropland or pasture there was consistently and significantly greater SOC in soil beneath the trees.
Starting Page	375
Ending Page	390
Page Count	16
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	360
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-05-02
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Soil organic carbon Carbon sequestration Soil quality Climate change mitigation Ecosystem services Plant Sciences Plant Physiology Ecology Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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