Environmental and vegetation relationships of the Artemisia tridentata spp. wyomingensis alliance

Davies, Kirk W.; Bates, Jon D.; Miller, Rick

doi:10.1016/j.jaridenv.2007.01.010

Cited by 65 publications

(40 citation statements)

References 20 publications

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“…Precipitation, mean annual temperature, and altitude not only affected the presence or absence of the species, but the impact of precipitation on the distribution of the studied species in the locations was the most effective factor. These results are in agreement with the findings of Davies et al (2007) which state that topographic characteristics (e.g., elevation, slope and aspect) are closely associated with the local climate (e.g. precipitation, evaporation and temperature) that greatly impacts plants.…”

Section: Discussionsupporting

confidence: 93%

The Impact of Environmental Factors on Distribution of Ferula Ovina (Boiss.) Boiss. In Northwest Iran

Aghajanlou¹

2018

Appl. Ecol. Env. Res.

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Abstract. Ferula ovina is a forage species, and of the species that is very important in soil conservation and water protection in the rangelands. It has become an endangered species in Iran due to regular cutting and overgrazing. The focus of this study is to investigate the effect of ecological factors on distribution of F. ovina in the study area. Samples were collected from three habitats (sites) where F. ovina was present along with three sites which did not have it. Three 150 m transects were established based on randomsystematically method on each site. On each transect, 10 square plots (2×2 m) were set up, and soil surface features were measured. Climatologic factors were assessed and physiographic factors were extracted for each site. Soil samples were collected from a 0-30 cm depth for each transect, and the values of soil were determined through laboratory analysis. According to the results, a significant difference was found for the parameters of elevation, slope, aspect, temperature, EC, pH, OC, phosphorus, clay, silt and sand (P≤0.01) between habitats where F. ovina were present and absent. Results of discriminant analysis suggested that the amount of sand and gravel on soil surface, phosphorous, clay, and EC were effective factors in the distribution of target species.

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Section: Discussionsupporting

confidence: 93%

The Impact of Environmental Factors on Distribution of Ferula Ovina (Boiss.) Boiss. In Northwest Iran

Aghajanlou¹

2018

Appl. Ecol. Env. Res.

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“…Although many similar results from other studies were cited to support ours above, there still existed some different aspects between our and other studies. For example, Davies et al (2007) documented slope was the only non-soil factor that was correlated with plant species composition, while TW and ASP were more important than slope (SLP) in our study. Soil organic carbon (SOC) seemed less important in impacting species composition in our study than in others Davies et al, 2007;Solon et al, 2007).…”

Section: Discussionmentioning

confidence: 52%

“…Another significant result of this study by regression analysis was that soil clay strongly influenced soil water content (SWC = −3.527 + 2.411Clay, R 2 = 0.701, p b 0.001), and thereby influenced plant diversity (CA in Table 1, SCA in Table 3 and CCA in Tables 5 and 6). Davies et al (2007) also documented positive association of soil clay content with plant species composition in a semi-arid environment. In such arid environments, soil was coarse-textured (He et al, 2004) leading to the weak capacity in holding soil water.…”

Section: Discussionmentioning

confidence: 83%

“…Good soil environments can provide plants with enough nutrients and available water, and topographic characteristics (e.g., elevation and slope aspect) are closely associated with local climate (e.g. precipitation, evaporation and solar incident radiation) that greatly impacts plants (Davies et al, 2007). Topographic characteristics (TW and LSF) can also regulate seed, water and materials redistribution, thereby impacting plants distribution pattern (Parker, 1982;Canton et al, 2004;Fu et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…This also partly explained the higher plant diversity of the shrubs than that of the herbs (Table 1). As compared with herbs, shrubs with relatively extensive roots could absorb water resources at different depths (Lu et al, 2006;Davies et al, 2007). However, up to now, most of the existing research in this area was only on soil nutrients (Wang et al, 2003), or the response of plant physiological characteristics to environmental stress (Li et al, 2005(Li et al, , 2006b.…”

Section: Discussionmentioning

confidence: 99%

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Relationships between vegetation and soil and topography in a dry warm river valley, SW China

et al. 2008

CATENA

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Understanding of the relationships between vegetation and soil and topography would be very important for ecosystem restoration and management efforts in the dry valleys of Himalayan region but how to clarify the complicated relationships and figure out key factors for practical purpose is a challenge. The main objective of this research was to propose a four-staged procedure by combining several multivariate statistical techniques to detect the relationships between vegetation and soil and topography, and thereby identify the key factors for the degraded ecosystem restoration and management. Forty-three plots (5 m × 5 m) were selected for the field survey of the vegetation, soil and topography variables in the dry warm river valley of the upper Minjiang River, Sichuan Province, China. Cluster analysis (CA) demonstrated that high plant diversity, cover and height were associated with good soil quality and favorable topographic positions with lower solar incident radiation, runoff and soil erosion potential. Correlation analysis (simple correlation analysis and canonical correlation analysis) and multiple linear stepwise regression analysis affirmed that plant diversity was mainly correlated with soil water content, and soil water content was mainly determined by soil texture (clay content). Soil clay content alone could explain about 70% of the total variance. Identifying the favorable topographic position and the distribution pattern of soil texture and its controlling mechanisms is thus very important for restoration practices. In the process of ecosystem restoration, we should promote the co-evolution of vegetation and soil, and follow the natural succession sequence. Some relevant conservation polices are also needed to reduce human disturbance on ecosystem.

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References

2018

Environmental Applications of Digital Terrain Modeling

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Environmental and vegetation relationships of the Artemisia tridentata spp. wyomingensis alliance

Cited by 65 publications

References 20 publications

The Impact of Environmental Factors on Distribution of Ferula Ovina (Boiss.) Boiss. In Northwest Iran

The Impact of Environmental Factors on Distribution of Ferula Ovina (Boiss.) Boiss. In Northwest Iran

Relationships between vegetation and soil and topography in a dry warm river valley, SW China

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