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| Titel |
Rapid revegetation by sowing seed mixtures of shrub and herbaceous species |
| VerfasserIn |
J. Feng, C. Zhang, T. Zhao, Q. Zhang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1869-9510
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| Digitales Dokument |
URL |
| Erschienen |
In: Solid Earth ; 6, no. 2 ; Nr. 6, no. 2 (2015-05-21), S.573-581 |
| Datensatznummer |
250115451
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| Publikation (Nr.) |
 copernicus.org/se-6-573-2015.pdf |
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| Zusammenfassung |
| Fast revegetation by means of sowing seed mixtures of shrub and herbaceous
species is a measure to prevent bare soils from wind and water erosion. A
field experiment was used to test the effect of species selection and the
ratio of shrub to herbaceous species on vegetation formation and shrub
growth. Results showed that herbaceous species hastened cover formation and
maintained a high coverage for a longer period. However, the growth of shrubs
was hindered. In the North China Plain or where the soil and climate are
similar, the ratio of shrub to herbaceous seeds is proposed to be
6 : 4–7 : 3 (weight ratio). Among the herbaceous species tested,
Festuca arundinacea Schreb. grows relatively slow, so it should be mixed with other fast-growing
species in the practice of rapid revegetation, and a seeding density lower
than 6 g m−2 is proposed when applied; Orychophragmus violaceus O. E. Schulz. wilts
when the seeds are ripe, leading to a significant decrease of coverage, so
other species with different phenology should be involved when it is
applied; Viola philippica Car. is a good ground cover plant which grows fast and maintains
a stable coverage from July to October, and a seeding density of 1.5 g m−2 is proposed for rapid revegetation. Herbaceous
species have different traits. Three different types of herbs were found in
our experiment: slow-growing stable species (F. arundinacea), fast-growing unstable
species (O. violaceus) and fast-growing stable species (V. philippica). Shrubs, slow-growing stable
species and fast-growing unstable species should not be used alone because
they cannot cover the ground fast or they cannot maintain a long period of
good coverage. A small seeding rate of fast-growing stable species should be
used to ensure a fair coverage against erosion. Because natural
environmental conditions are heterogeneous and stochastic, more species
should be added to enhance the stability of plant community. |
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