Persistent soil seed bank in Agriophyllum squarrosum (Chenopodiaceae) in a deep sand profile: Variation along a transect of an active sand dune

Liu, Z.; Yan, Qiaoling; Liu, Bo; Ma, Jian; Luo, Yuhan

doi:10.1016/j.jaridenv.2007.03.003

Cited by 35 publications

(22 citation statements)

References 16 publications

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“…Its disc−shaped seeds have a mass of 1.52±0.03 (standard error, SE) mg, and seed production per plant is 2, 224±171 (Liu et al 2006). A. squarrosum has a persistent soil seed bank (Liu et al 2007c). It also has a canopy seed bank.…”

Section: Species Descriptionmentioning

confidence: 99%

“…Presumably, seed distribution in active dunes and the relationship between seed banks and seedling emergence changes dramatically and temporally according to depth and position of the dune (Zhu and Zou 1987). However, existing reports have failed to effectively elucidate the temporal dynamics (some reports explain the spatial structure of seed banks only for specific time periods, i.e., Bai et al 2004;Yan et al 2005;Liu et al 2007c), the spatial structure (some reports do not take position differences into consideration while some consider only a shallow soil profile, i.e., Bai et al 2004;Yan et al 2005) and the factors regulating the distribution of seed banks in active sand dunes. Therefore, studies on seed banks in the active dune system under different time points, dune positions, soil depth, and other regulating factors are essential.…”

Section: Introductionmentioning

confidence: 99%

“…Although some studies on the spatiotemporal pattern of seed banks in A. squarrosum colonizing active dunes have been performed, there is still a need for further investigations on this topic. This is mainly because (1) the soil samples in previous studies were obtained from a depth of less than 20 cm (Bai et al 2004;Liu et al 2006); this depth is not sufficient for studying the seed bank patterns in active dunes (Liu et al 2007c); and (2) the role of canopy-stored seeds in regulating the spatiotemporal pattern of the seed banks of active sand dunes has not been studied by investigating soil sampled from the deeper layers of these dunes.…”

Section: Introductionmentioning

confidence: 99%

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Spatiotemporal pattern of seed bank in the annual psammophyte Agriophyllum squarrosum Moq. (Chenopodiaceae) on the active sand dunes of northeastern Inner Mongolia, China

Liu

2008

Plant Soil

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The seed banks of active sand dunes are critical for the adaptation of psammophytes to unstable habitats. However, existing reports have failed to effectively elucidate the spatiotemporal structure of these seed banks and the factors regulating them. The seed bank pattern of the annual psammophyte Agriophyllum squarrosum Moq. in active sand dunes was studied by taking into consideration the time, the depth of the soil profile, dune positions, and seed bank type (released seed bank, belowground and aboveground canopy seed banks). Most canopy-stored seeds were unburied before the following March of the maturation year; however, they were buried from March to May. The seed bank mainly comprised the aboveground canopy-stored seeds from September of the year of seed maturation to the following March. The seed bank was concentrated in the surface soil layers (0-10 cm) from March of the year following seed maturation to June and was concentrated in the deep soil layers (10-50 cm) after June. The seed bank in the lower leeward slope tended to be larger than those in the other dune positions. The canopy-stored seed:released seed ratio differed between dune positions. The findings of this study are: (1) sand burial and wind erosion play key roles in shaping the spatiotemporal pattern of the seed banks of active sand dunes, and (2) delayed seed release may be a major factor regulating the spatiotemporal pattern of the seed banks of certain psammophytes.

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Section: Species Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spatiotemporal pattern of seed bank in the annual psammophyte Agriophyllum squarrosum Moq. (Chenopodiaceae) on the active sand dunes of northeastern Inner Mongolia, China

Liu

2008

Plant Soil

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“…Desertification area gradually decreases due to the vegetation restoration since 2000 (Wang et al, 2004). This region is characterized by high patchiness and fragmentation, with various landscape elements such as sand dunes, grasslands and farmlands (Liu et al, 2007).…”

Section: Site Descriptionmentioning

confidence: 99%

Scale dependent effects of environmental factors on vegetation pattern and composition in Horqin Sandy Land, Northern China

Zuo

Zhao

et al. 2012

Geoderma

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“…Due to vegetation restoration, sandy desertification in this region has been reversed since 2000 (Wang et al, 2004). This region consists of a mixture of flood plain grasslands, lowland grasslands, sand dunes, woodlands and farmlands (Liu et al, 1996;Liu et al, 2007). Soils are of three different types: marsh soil present in wetland and flood plain grasslands, meadow soil in meadow habitat and sandy soil in sandy dune habitat (Liu et al, 1996).…”

Section: Study Area Descriptionmentioning

confidence: 99%

Indirect drivers of plant diversity-productivity relationship in semiarid sandy grasslands

et al. 2012

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Abstract. Although patterns between plant diversity and ecosystem productivity have been much studied, a consistent relationship has not yet emerged. Differing patterns between plant diversity and productivity have been observed in response to spatial variability of environmental factors and vegetation composition. In this study, we measured vegetation cover, plant diversity, productivity, soil properties and site characteristics along an environmental gradient (mobile dune, semi-fixed dune, fixed dune, dry meadow, wet meadow and flood plain grasslands) of natural sandy grasslands in semiarid areas of northern China. We used multivariate analysis to examine the relationships between environmental factors, vegetation composition, plant diversity and productivity. We found a positive correlation between plant diversity and productivity. Vegetation composition aggregated by the ordination technique of non-metric multidimensional scaling had also a significantly positive correlation with plant diversity and productivity. Environmental gradients in relation to soil and topography affected the distribution patterns of vegetation composition, species diversity and productivity. However, environmental gradients were a better determinant of vegetation composition and productivity than of plant diversity. Structural equation modeling suggested that environmental factors determine vegetation composition, which in turn independently drives both plant diversity and productivity. Thus, the positive correlation between plant diversity and productivity is indirectly driven by vegetation composition, which is determined by environmental gradients in soil and topography.

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Persistent soil seed bank in Agriophyllum squarrosum (Chenopodiaceae) in a deep sand profile: Variation along a transect of an active sand dune

Cited by 35 publications

References 16 publications

Spatiotemporal pattern of seed bank in the annual psammophyte Agriophyllum squarrosum Moq. (Chenopodiaceae) on the active sand dunes of northeastern Inner Mongolia, China

Spatiotemporal pattern of seed bank in the annual psammophyte Agriophyllum squarrosum Moq. (Chenopodiaceae) on the active sand dunes of northeastern Inner Mongolia, China

Scale dependent effects of environmental factors on vegetation pattern and composition in Horqin Sandy Land, Northern China

Indirect drivers of plant diversity-productivity relationship in semiarid sandy grasslands

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