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Table 1 Number of studies investigating different crop rotation impacts on soil organic carbon in systematic map

From: How do selected crop rotations affect soil organic carbon in boreo-temperate systems? A systematic review protocol

Review questiona

Number of studies

Number of studies with data for meta-analysis

Crop rotations-vs-monocultures (1.1)

132

62

Rotations with-vs-without legumes (1.2.1)

138

71

Rotations with perennials-vs-annuals (1.3)

60

29

  1. aCodes within parenthesis refer to categories used in the systematic map by Haddaway et al. [26]
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Environmental Evidence

ISSN: 2047-2382