Spatial heterogeneity of vegetation under different grazing intensities in the Northwest Heilongjiang Steppe of China

Wang, Yusheng; Shiyomi, Masae; Tsuiki, Mikinori; Tsutsumi, Michio; Yu, Xueren; Ru-han, YI

doi:10.1016/s0167-8809(01)00217-1

Cited by 51 publications

(40 citation statements)

References 22 publications

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“…In accordance with other studies in dry grasslands this can be a consequence of gradually decreased stocking density. Heavy grazing reportedly eliminated dwarf shrubs (Wang et al, 2002) whereas removal of grazing can result in their increased cover (Hulme et al, 1999). The above pattern of vegetation development was found in a study based on a pseudoreplication.…”

Section: Vegetation Changementioning

confidence: 76%

Impact of management on vegetation dynamics and seed bank formation of inland dune grassland in Hungary

Matus

Papp

Tóthmérész

2005

Flora - Morphology, Distribution, Functional Ecology of Plants

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Section: Vegetation Changementioning

confidence: 76%

Impact of management on vegetation dynamics and seed bank formation of inland dune grassland in Hungary

Matus

Papp

Tóthmérész

2005

Flora - Morphology, Distribution, Functional Ecology of Plants

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“…Heavy grazing pressure has been reported to reduce the diversity of herbs and shrubs in the range land (Zhao et al, 2006). Due to overgrazing, the vegetation species composition, richness and productivity has changed over the past decades, some species have disappeared, while others have survived through the use of morphological or other adaptations (Wang et al, 2002). The variation in bite frequency in different months depends upon the available biomass for grazing (Prakash, 2002).…”

Section: Discussionmentioning

confidence: 99%

Composition, productivity and impact of grazing on the biodiversity of a grazing land in Almora District

Prakash

Paliwal²

2012

JANS

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Biodiversity of Almora district is heavily affected in the areas with heavy grazing pressure, although moderate grazing enhanced the biodiversity of the area. In the present study site a total of 45 herbaceous species were present and therophytes were dominant among them. Live shoot biomass of plants varied from 175.0±3.5 to 1862.0±5.75 kg/ha and 87.0±3.25 to 1303.0±7.50 kg/ha in ungrazed and grazed plots respectively. Aboveground primary productivity was significantly higher on control plot (3082.2 kg/ha) over grazed plot (2644.0 kg/ha). The average bite frequency per hour was recorded maximum for goats (1106.5 bite/hr) and least for buffalos (920 bites/ hr). The monthly dry matter consumption per animal was amounted to 157.15, 154.51, 68.66 and 61.34 kg for cow, buffalo, sheep and goat respectively under nomadic open grazing. The percent herbage exploitation was observed maximum by sheep (9.82%) and minimum by buffalo (8.75%).

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“…While many previous studies demonstrate that poor management and overgrazing causes shifts in dominant species and consequently leads to grassland degradation across a wide range of ecosystems in the Eurasian steppe (Li 1988;Tong et al 2004;Wang and Ripley 1997;Wang et al 2002). And the shortage of sustainable management alternatives was partly attributed to the lack of systematic studies on the underpinning mechanisms of grazing induced species shift (Harris 2010).…”

Section: Introductionmentioning

confidence: 99%

Effects of grazing management system on plant community structure and functioning in a semiarid steppe: scaling from species to community

et al. 2010

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Under the aim of searching for a more sustainable grazing management system, a mixed management system (grazing and haymaking alternate annually) was proposed and tested against traditional management system (used consistently either for grazing or haymaking) in the semiarid grassland of Inner Mongolia with a field manipulation experiment. The responses of aboveground biomass to the two grazing management systems were examined across different levels of organization (i.e., species, plant functional group, and community) and in five consecutive years from 2005 to 2009. The effects of the two systems on seed production potential of four dominant species (Leymus chinensis, Stipa grandis, Agropyron cristatum, Cleistogenes squarrosa) were also investigated. Our results demonstrate that, in the traditional system, aboveground biomass production across all the levels of organization was reduced by grazing. In mixed system, however, no significantly negative relationship between the biomass response and stocking rate was detected at all organization levels. Precipitation fluctuation had strong influence on biomass responses, and compared to the traditional system the slope of the biomass-precipitation relationship tends to be higher in the mixed system. This effect might be attributed to the more positive response of L. chinensis and A. cristatum to increase in precipitation. In the traditional system, both the ratio and the density of reproductive tillers of the grazing subplots were significantly reduced compared to the haymaking or ungrazed control plots. In the mixed system, there was no significant difference between the haymaking subplots and the ungrazed control plots, regardless of the grazing pressures imposed on the haymaking subplots in the previous growing season. Our findings suggest that the mixed system mitigates the sheep grazing-induced species shift and it tends to be more responsive to increasing precipitation as compared to the traditional system. Therefore, replacement of the traditional grazing strategy with the mixed system could provide an important contribution to sustainable land-use of the Inner Mongolia grasslands.

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Spatial heterogeneity of vegetation under different grazing intensities in the Northwest Heilongjiang Steppe of China

Cited by 51 publications

References 22 publications

Impact of management on vegetation dynamics and seed bank formation of inland dune grassland in Hungary

Impact of management on vegetation dynamics and seed bank formation of inland dune grassland in Hungary

Composition, productivity and impact of grazing on the biodiversity of a grazing land in Almora District

Effects of grazing management system on plant community structure and functioning in a semiarid steppe: scaling from species to community

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