Comparison of Soil Properties in Pure and Mixed Plantations of Populus deltoides Marsh. and Alnus subcordata C.A.Mey

Document Type : Research Paper

Authors

1 MSc student in Forestry, Tarbiat Modarres University

2 Assistant Professor, Forestry, Tarbiat Modares University

3 Staff members, Experimental Center for Range

4 Forest Management of Mazandaran Province, respectively.

Abstract

Mixed plantations of nitrogen fixing trees is one method of improving soil fertility after successive harvests of fast growing trees. Soil properties were studied in 7- year old pure and mixed plantations of Populus deltoides Marsh. and Alnus subcordata C.A.Mey near Chamestan in north of Iran(Caspian region). Total nitrogen was higher in 15-30 cm soil layer under pure Alnus subcordata forest as compared with a mixture of 67% Populus: 33% Alnus ar 50% Populus: 50% Alnus or 33% Populus: 67% Alnus or 50% Populus: 50% Alnus. However, soil pH, EC, organic matter, available P, K, Ca, and Mg were statistically the same in these pure and mixed plantations. Finally, we can conclude that the use of mixed plantation of A. subcordata as a nitrogen fixing tree with P. deltoides on soil physico- chemical properties up to 7 years of age.

Highlights

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Keywords

Iranian Journal of Soil Research
Volume 19, Issue 1
May 2005
Pages 105-112

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