Responses of Soil Seed Bank and Vegetation to the Increasing Intensity of Human Disturbance in a Semi-Arid Region of Northern China

Li, Cui; Xiao, Bo; Wang, Qinghai; Zheng, Ren-Hui; Wu, Juying

doi:10.3390/su9101837

Cited by 32 publications

(28 citation statements)

References 46 publications

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“…The current studies will be helpful for the researchers to quantify soil seed bank in the cultivated area for the management of undesirable wild plant species. Our conclusion was disagreed with the findings of Li et al, (2017), According to them the results showed that seed density and species all decreased with as human disturbance intensity in the soil seed bank increased.…”

Section: Resultscontrasting

confidence: 99%

“…The quantitative value of seed bank was successively increased from piedmont soil to alluvial plains of Dera Ghazi Khan Landscape, and depth wise soil seed bank was successively decreased from the range 0-5cm to 10-15cm. The highest numbers of seeds in the soil was found at the depth range of 0-10cm in all three localities of the landscape and this idea is agreed with previous findings of Gulshan et al, (2013) and Li et al, (2017), their findings pointed out the quantity of soil seeds decreased with the increased of depth and disturbance intensity of soil habitats.…”

Section: Discussionsupporting

confidence: 92%

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Scrutinization of Soil Seed Bank from Arid to Mesic Habitats of Dera Ghazi Khan

Bakhsh

et al. 2018

Preprint

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The research was conducted to investigate the persistent soil seed bank composition and its relation to the above-ground vegetation of upland area (piedmont) to low land area (alluvial) landscape from arid to mesic region of Dera Ghazi Khan. A transact of 40 kilometers was laid down from arid to mesic habitat. At each 2 km a quadrate of 1 m -2 sizes was thrown in the field to collect a soil sample of 2kg from soil cores ranging 0-15 cm deep for the analysis of soil seed bank. Twenty different sites were sampled by throwing 6 quadrates at each site making a total of 120 samples.Three thousand seeds were obtained of 50 different species from all the collected samples. Soil seed bank density m -2 was higher in the alluvial plains of Dera Ghazi Khan. Most of the perennial species, which were xerophytic in nature such as Aerua persica, Calotropis procera, Fagonia indica, Leptadaenia pyrotechnica, Peganum hermala, Rhazya stricta and Suaeda fructicosa were found in the piedmont (arid) soil habitat and the soil seed bank relatively less than the species found in the alluvial (Mesic) soil habitat, which were mostly of annual life span such as Chenopodium murale, Euphorbia prostrata, Medicago denticulata, Fumaria indica, and Withania somnifera. From this study it is concluded that the similarity found between soil seed bank and above ground vegetation of both historic types of habitats piedmont (arid) and alluvial (mesic) of Dera Ghazi Khan

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Section: Resultscontrasting

confidence: 99%

Section: Discussionsupporting

confidence: 92%

Scrutinization of Soil Seed Bank from Arid to Mesic Habitats of Dera Ghazi Khan

Bakhsh

et al. 2018

Preprint

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“…Soil seed bank (SB) refers to a viable seed which is present in the soil or associated with litter/hummus (Zhang et al, 2017). It represents the potential for the maintenance of plant communities of the past through the improvement of future plant communities in the surrounding area (Li et al 2017). SBB are significant as a component of regeneration for succession in ecosystems following disturbances.…”

Section: Introductionmentioning

confidence: 99%

Prosopis juliflora invasion and environmental factors on density of soil seed bank in Afar Region, Northeast Ethiopia

et al. 2019

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The aims of the study were to analyze (1) the effects of Prosopis juliflora (Prosopis) on the spatial distribution and soil seed banks (SSB) diversity and density, (2) the effects of environmental factors on SSB diversity and density (number of seeds in the soil per unit area), and (3) the effects of animal fecal droppings on SSB diversity, density, and dispersal. Aboveground vegetation data were collected from different Prosopis-infested habitats from quadrats (20 × 20 m) in Prosopis thickets, Prosopis + native species stand, non-invaded woodlands, and open grazing lands. In each Prosopis-infested habitats, soil samples were collected from the litter layer and three successive soil layer, i.e., 0-3 cm, 3-6 cm, and 6-9 cm. Seeds from soil samples and animal fecal matter were separated in the green house using the seedling emergence technique. Invasion of Prosopis had significant effects on the soil seed bank diversity. Results revealed that the mean value of the Shannon diversity of non-invaded woodlands was being higher by 19.2%, 18.5%, and 11.0% than Prosopis thickets; Prosopis + native species stand and open grazing lands, respectively. The seed diversity and richness, recovered from 6-9-cm-deep layer were the highest. On the other hand, the density of Prosopis seeds was the highest in the litter layer. About 156 of seeds/kg (92.9%) of seeds were germinated from cattle fecal matter. However, in a small proportion of seedlings, 12 of seeds/kg (7.1%) were germinated from shot fecal matter. Thus, as the seeds in the soil were low in the study areas, in situ and ex situ conservation of original plants and reseeding of persistent grass species such as Cynodon dactylon, Cenchrus ciliaris, Chrysopogon plumulosus, and Brachiaria ramosa are recommended.

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“…Seed bank (SB) is the feasible seeds that exist on the surface or dormant in the soil (Li et al, 2017). All viable seeds present on, or in, the soil and associated with litter/humus (Mekonnen, 2016).…”

Section: Introductionmentioning

confidence: 99%

Ecology of soil seed banks: Implications for conservation and restoration of natural vegetation: A review

Shiferaw¹,

Demissew²,

Bekele³

2018

Int. J. Biodivers. Conserv.

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Seed bank (henceforth referred to as SB) refers to viable seed which is present on or in soil and associated with litter/humus. Under different land use/land cover systems and climatic regions, density of seeds in the soil is variable both in space and time. SB density decreases with increasing depth and age of seeds in the soil. Smaller seeds are more easily incorporated, moved to deeper soil layers and persist longer in the soil, whereas large sized seeds without hard seed coats lack persistence in the soil. Moreover, small and elongated seeds are more persistent than large and round seeds. In most vegetation types, grass and herbs have denser seeds in the soil than woody species. Due to shade intolerant properties, density of grasses and forbs are also higher in forest gaps and farmlands than under shade of trees. In most of vegetation types and under medium disturbances e.g. under grazing, density and diversity of species are higher than that of lower and higher disturbance intensities. Tillage practices also have negative impacts on density, composition and abundance of SB. Hence, seeds decline under conventional tillage than under conservational tillage practices. In several studies, seeds in the SB are not similar to above ground vegetation. Similarly, density and diversity of seeds in a SB exceeds that of standing vegetation. Persistence seeds in soil are essential in maintaining individual species and the plant community, conservation of genetic biodiversity and restoration of plant communities of degraded lands after disturbances under harsh environmental conditions, especially in arid regions. As a result, SB characteristics are used to elucidate seed dynamics in various vegetation types. Overall, scientific knowledge of SB is used for land use planning, to make recommendations for future cost effective measures and to establish policies for conservation or restoration programmes.

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Responses of Soil Seed Bank and Vegetation to the Increasing Intensity of Human Disturbance in a Semi-Arid Region of Northern China

Cited by 32 publications

References 46 publications

Scrutinization of Soil Seed Bank from Arid to Mesic Habitats of Dera Ghazi Khan

Scrutinization of Soil Seed Bank from Arid to Mesic Habitats of Dera Ghazi Khan

Prosopis juliflora invasion and environmental factors on density of soil seed bank in Afar Region, Northeast Ethiopia

Ecology of soil seed banks: Implications for conservation and restoration of natural vegetation: A review

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