TY - JOUR
T1 - Functional soil mapping for site-specific soil moisture and crop yield management
AU - Zhu, Q.
AU - Lin, H. S.
AU - Doolittle, J. A.
N1 - Funding Information:
The data collection of this study was supported by the USDA National Research Initiative (grant no. 2002-35102-12547 ). The preparation of this paper was supported by National Natural Science Foundation of China (grant no. 41271109 ) and Leading Edge Project of Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences (grant no. NIGLAS2011YJ01 ).
Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013/6
Y1 - 2013/6
N2 - To advance site-specific management, detailed functional (application-orientated) soil maps are desirable. This study presents an example of a functional soil map for the management of crop yields and soil moisture in an agricultural landscape located in central Pennsylvania, USA. A high-intensity soil map was prepared using electromagnetic induction (EMI), terrain attribute, and soil core data. Two soil properties, A horizon texture and depth to clay layer were found to be significantly correlated (p<0.05) with soil moisture and crop yields (corn and soybean). A functional soil map was generated by overlaying these two properties on the high-intensity soil map. Spatial and temporal variations in soil moisture and crop yield within different functional map units were statistically compared with those within different map units on the second-order and the high-intensity soil maps. While soil moisture and crop yield did not show obvious difference among map units of the second-order soil map, clear differences were observed among the functional soil map units developed in this study. This study demonstrates that the accuracy and utility of second-order soil maps for site-specific management can be improved using EMI and functional soil mapping approaches.
AB - To advance site-specific management, detailed functional (application-orientated) soil maps are desirable. This study presents an example of a functional soil map for the management of crop yields and soil moisture in an agricultural landscape located in central Pennsylvania, USA. A high-intensity soil map was prepared using electromagnetic induction (EMI), terrain attribute, and soil core data. Two soil properties, A horizon texture and depth to clay layer were found to be significantly correlated (p<0.05) with soil moisture and crop yields (corn and soybean). A functional soil map was generated by overlaying these two properties on the high-intensity soil map. Spatial and temporal variations in soil moisture and crop yield within different functional map units were statistically compared with those within different map units on the second-order and the high-intensity soil maps. While soil moisture and crop yield did not show obvious difference among map units of the second-order soil map, clear differences were observed among the functional soil map units developed in this study. This study demonstrates that the accuracy and utility of second-order soil maps for site-specific management can be improved using EMI and functional soil mapping approaches.
UR - http://www.scopus.com/inward/record.url?scp=84875493470&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84875493470&partnerID=8YFLogxK
U2 - 10.1016/j.geoderma.2013.02.001
DO - 10.1016/j.geoderma.2013.02.001
M3 - Article
AN - SCOPUS:84875493470
SN - 0016-7061
VL - 200-201
SP - 45
EP - 54
JO - Geoderma
JF - Geoderma
ER -