Changes in labile organic carbon fractions and soil enzyme activities after marshland reclamation and restoration in the Sanjiang Plain in northeast China
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Published source details
Song Y., Song C., Yang G., Miao Y., Wang J. & Guo Y. (2012) Changes in labile organic carbon fractions and soil enzyme activities after marshland reclamation and restoration in the Sanjiang Plain in northeast China. Environmental Management, 50, 418-426.
Published source details Song Y., Song C., Yang G., Miao Y., Wang J. & Guo Y. (2012) Changes in labile organic carbon fractions and soil enzyme activities after marshland reclamation and restoration in the Sanjiang Plain in northeast China. Environmental Management, 50, 418-426.
Actions
This study is summarised as evidence for the following.
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Abandon cropland: allow freshwater marshes or swamps to recover without active intervention Action Link |
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Abandon cropland: allow freshwater marshes or swamps to recover without active intervention
A replicated, site comparison study in 2009 of three abandoned soybean fields in northeast China (Song et al. 2012) found that they had developed wet meadow vegetation after 3–12 years – of similar height to a natural meadow in three of three comparisons, but with similar biomass in only one of three comparisons. All three abandoned fields and the natural meadow were dominated by the grass Calamagrostis angustifolia, sometimes along with other species (community composition not quantified). All three abandoned fields had vegetation of a similar average height (79–94 cm) to the natural meadow (87 cm). However, only the field abandoned for six years had similar vegetation biomass (383 g/m2) to the natural meadow (420 g/m2). Biomass was lower the field abandoned for three years (353 g/m2) and higher in the field abandoned for 12 years (533 g/m2). Methods: In summer 2009, vegetation was surveyed in four wet meadows: three developing in abandoned soybean fields and one natural (never cultivated). Vegetation was cut from one 0.25-m2 quadrat/meadow, then dried and weighed. Details of plant height measurements were not reported.
(Summarised by: Nigel Taylor)
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