Effects of different land-use systems (grazing and understory cultivation) on growth and yield of semi-arid oak coppices

Soltani, Alì; Kaji, Hamdollah Sadeghi; Kahyani, Saleh

doi:10.1007/s11676-019-01063-z

Cited by 7 publications

(4 citation statements)

References 46 publications

(38 reference statements)

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“…In this study, with the increase of grazing intensity and spatial scale, the inter-specific relationship affinity between S. breviflora and C. songorica increased, and the inter-specific competition ability decreased. This is consistent with the results of Soltani et al , which suggest that long-term grazing generally reduces competition between dominant species (Soltani et al, 2020). The increasing affinity of the two may be interpreted as a tolerance or resistance to grazing disturbance (Levine and HilleRisLambers, 2009).…”

Section: Discussionsupporting

confidence: 92%

Heavy grazing led to the decrease of competitive intensity relationships among dominant populations of clustered grasses in a desert steppe

Wang,

Lv,

Liu

et al. 2023

Preprint

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Stipa breviflora (Stipa breviflora Griseb.) and Cleistogenes songorica (Cleistogenes songorica (Roshev.) Ohwi) are two dominant species in the critically important desert steppe of northern China. Under the interference of grazing, the two species will have the phenomenon of plant cluster fragmentation to varying degrees. Therefore, when the two plant populations appear in the same plant community, what changes will happen in the inter-specific relationship during grazing has important guiding significance for its regulation of plant community and function. To study this, we observed populations of wild S. breviflora and C. songorica in field under a suite of grazing intensities and at a variety of scales. The density changes of dominant species S. breviflora and C. songorica in desert steppe in Inner Mongolia were studied under four grazing intensities (no grazing, CK, 0 sheep·ha-1·half year-1, light grazing, LG, 0.93 sheep·ha-1·half year-1, moderate grazing, MG, 1.82 sheep·ha-1·half year-1, heavy grazing, HG, 2.71 sheep·ha-1·half year-1) and six scales (5 cm×5 cm, 10 cm×10 cm, 20 cm×20 cm, 25 cm×25 cm, 50 cm×50 cm and 100 cm×100 cm). Results showed that grazing changes the relationship between dominant species. With the increase of grazing intensity, the densities of S. breviflora and C. songorica increased, and the increase was more obvious with the increase of scale. Under heavy grazing conditions, the dominant populations of clustered grasses in Inner Mongolia desert steppe resisted the interference of high-intensity grazing by reducing inter-specific competition ability (increasing inter-specific affinity).

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Section: Discussionsupporting

confidence: 92%

Heavy grazing led to the decrease of competitive intensity relationships among dominant populations of clustered grasses in a desert steppe

Wang,

Lv,

Liu

et al. 2023

Preprint

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show abstract

“…In this study, as grazing intensity and spatial scale increased, the inter-speci c relationship a nity between S. brevi ora and C. songorica increased, and the inter-speci c competition decreased. This is consistent with the results of Soltani et al, who reported that long-term grazing changed the adaptability of the community to the environment, resulting in a decrease in the competitiveness of dominant species (Soltani et al, 2020). Only increasing the a nity of the two species can enable them to resist grazing disturbance (Levine and HilleRisLambers, 2009).…”

Section: Discussionsupporting

confidence: 92%

Heavy grazing led to the decrease of competitive intensity relationships among dominant populations of clustered grasses in a desert steppe

Wang

Lv²,

Li³

et al. 2022

Preprint

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AimsDesert steppe is an important ecological barrier in northern China. Stipa breviflora and Cleistogenes songorica are the dominant species in the desert steppe. Both plant populations undergo plant cluster fragmentation to varying degrees when subject to grazing interference. However, when both plant populations are present in the same plant community, changes in their inter-specific relationship under grazing is important for regulation of the plant community and its functions. MethodsThis study investigated S. breviflora and C. songorica in a desert steppe, and used variance analysis, the Jaccard index and simple linear regression model analysis methods to study differences in the density of both species under four grazing intensities (i.e., control (CK) 0 sheep·hm-2·half year-1, light grazing (LG) 0.93 sheep·hm-2·half year-1, moderate grazing (MG) 1.82 sheep·hm-2·half year-1 and heavy grazing (HG) 2.71 sheep·hm-2·half year-1) at six scales (i.e., 5 cm×5 cm, 10 cm×10 cm, 20 cm×20 cm, 25 cm×25 cm, 50 cm×50 cm and 100 cm×100 cm). The study explored the competitive relationships between the plant populations. ResultsResults showed that grazing changes the relationship between dominant species. As grazing intensity increases, the competitive abilities of S. breviflora and C. songorica first increased and then decreased. Under heavy grazing conditions, the dominant populations of clustered grasses in the desert steppe resisted interference from high-intensity grazing by reducing inter-specific competition. ConclusionsAs grazing intensity increased, the densities of S. breviflora and C. songorica increased, and the increase became more obvious as the scale of analysis increased.

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“…on annual tree growth should be minimized if not excluded. This can be achieved by proper sampling design and selection of appropriate trees (Soltani et al 2020). In the current study grazing, competition, and other factors could be, together with climate, responsible for the increases and Fig.…”

Section: Discussionmentioning

confidence: 99%

Exploring the past of Mavrovouni forest in the Pindus Mountain range (Greece) using tree rings of Bosnian pines

Christopoulou

Fyllas

Gmińska-Nowak

et al. 2021

Trees

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Key message Long Bosnian pine chronologies from different mountains are shaped by different climatic parameters and can help identify past drought events and reconstruct landscape histories. Abstract We developed a 735-year-long Pinus heldreichii chronology from the southern distribution limit of the species, expanding the available database of long Bosnian pine chronologies. Tree-ring growth was mainly positively correlated with growing degree days (GDD: r1950–2018 = 0.476) while higher temperatures during both winter and growing season also enhanced growth (TWT: r1950–2018 = 0.361 and TGS: 0.289, respectively). Annual precipitation, during both calendar and water years, had a negative but weaker impact on annual tree growth. The newly developed chronology correlates well with chronologies developed from the neighboring mountains. The years with ring width index (RWI) lower than the average were found to correspond to cool years with dry summers. Still, the newly developed chronology was able to capture severe drought events, such as those in 1660, 1687, and 1725. Several old living trees had internal scars presumably caused by fires. Therefore, old mature trees could be used for fire history reconstruction in addition to climate reconstruction. Although the presence of lightning scars indicates an important natural agent of fire ignition, human activities associated with animal grazing could also be an underlying reason for fires in the region.

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Effects of different land-use systems (grazing and understory cultivation) on growth and yield of semi-arid oak coppices

Cited by 7 publications

References 46 publications

Heavy grazing led to the decrease of competitive intensity relationships among dominant populations of clustered grasses in a desert steppe

Heavy grazing led to the decrease of competitive intensity relationships among dominant populations of clustered grasses in a desert steppe

Heavy grazing led to the decrease of competitive intensity relationships among dominant populations of clustered grasses in a desert steppe

Exploring the past of Mavrovouni forest in the Pindus Mountain range (Greece) using tree rings of Bosnian pines

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