Soil organic matter quantity and quality in mountain soils of the Alay Range, Kyrgyzia, affected by land use change

Glaser, Bruno; Turrión, María‐Belén; Solomon, Daniel; Ni, Anatoli; Zech, Wolfgang

doi:10.1007/s003749900187

Cited by 75 publications

(47 citation statements)

References 10 publications

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“…(Glaser et al 2000) under similar vegetation. The importance of grain size composition, slope angle, porosity of mountain soils, frequent erosion, and land use, all of which are unfavourable for the creation of conditions for nutrient accumulation and soil development, was stated there as well.…”

Section: Soil Conditionsmentioning

confidence: 95%

The human impact on the transformation of juniper forest landscape in the western part of the Pamir-Alay range (Tajikistan)

et al. 2017

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Detailed analyses were conducted of human impact on juniper forest landscapes occurring within the Zarafshan Range (Pamir-Alay). Juniperus seravschanica and J. semiglobosa belong to forest-forming species in Central Asia. At present, juniper forests all over Tajikistan are seriously threatened as a result of excessive logging and cattle grazing. The aim of this paper is to present juniper forest transformation as a result of human activities as well as the diversity of soil properties in the organic and humus horizons in the altitudinal system of soil zonation. Three groups of phytocoenoses were distinguished: those with a dominant share of Juniperus seravschanica; those with a dominant share of J. semiglobosa; and mixed. Associations with Juniperus seravschanica and J. semiglobosa feature several variants of phytocoenoses with dominant species: Artemisia lehmanniana, A. dracunculus, Eremurus olgae,

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Section: Soil Conditionsmentioning

confidence: 95%

The human impact on the transformation of juniper forest landscape in the western part of the Pamir-Alay range (Tajikistan)

et al. 2017

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“…These communities are important not only for protection of medicinal plant species but also for conservation of ecosystems and their environments in semi-arid and arid regions in North China [23,24]. The classification results by fuzzy C-means clustering are reasonable according to vegetation classification system of China [25][26][27]. These further confirm that fuzzy C-means clustering is an effective technique in vegetation analysis [28,29].…”

Section: Discussionmentioning

confidence: 82%

Fuzzy C-means Clustering Applied to the Classification of <i>Glycyrrhiza uralensis</i> Communities in North China

Song¹

2017

ACIS

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Fuzzy C-means clustering is a soft technique and has some advantages in ecological studies. Glycyrrhiza uralensis is an endangered medicinal plant species and mainly distributed in North China. Species data of 100 plots of 5 m x 5 m from semi-arid and arid regions in North China were analyzed by fuzzy C-means clustering. A hundred plots were classified into 12 vegetation formations by fuzzy C-means clustering. These formations were main communities dominated by Glycyrrhiza uralensis in North China. Each formation has its own composition, structure, distribution range and environment, and all of them should be protected effectively. The results suggest that fuzzy C-means clustering is an useful technique for classification of plant community.

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“…The canonical coefficients, which represent the regression coefficients between CCA axes and environmental variables produced in the CCA analysis, showed similar relationships of environmental variables with vegetation and species ( Table 2). Both the soil variables and the topographic variables were significant in affecting the spatial distribution of vegetation and species, because these variables interact and influence each other (Glaser et al, 2000;Zhang, 2002). Soil nutrients, such as N, P, Mn, Zn, Cu were significantly correlated with each other, and are related to soil organic matter ( Table 3).…”

Section: Forests and Environmentsmentioning

confidence: 99%

Ecological Study of Forests Dominated by Endangered Species, Taxus Chinensis Var. Mairei , in Shanxi of China

Ru¹

2012

Appl Ecol Env Res

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Abstract. Taxus chinensis var. mairei is an endemic, endangered and first-class protected tree species with great medicinal values in China. Its forest distributes in very limited region and its area is reducing during the last 30 years. Conservation of this species and its communities is urgent. This study aimed to reveal relationships of T. chinensis var. mairei forests with soil variables and topographic variables in Shanxi of China. Floristic data and environmental data from 95 samples of 10 m × 10 m in temperate region were analyzed by TWINSPAN, DCA and CCA, and species diversity indices. Eight forest associations were recognized by TWINSPAN and testified by DCA. These associations with special characteristics were main forest types of T. chinensis var. mairei. The results of CCA showed that the vegetation patterns are related to both soil variables and topographic variables. Among the soil variables, soil organic matter, water content, N, P, Zn and Mn were the most important factors explaining the spatial patterns of forest communities. The topographic variables, elevation, slope and aspect were also significantly correlated with the vegetation. Interactions between the environmental variables were apparent. Species richness, diversity and evenness were significantly related to elevation, but not significantly related to other variables. Further measures for the conservation of T. chinensis var. mairei and its forests must be undertaken.

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Soil organic matter quantity and quality in mountain soils of the Alay Range, Kyrgyzia, affected by land use change

Cited by 75 publications

References 10 publications

The human impact on the transformation of juniper forest landscape in the western part of the Pamir-Alay range (Tajikistan)

The human impact on the transformation of juniper forest landscape in the western part of the Pamir-Alay range (Tajikistan)

Fuzzy C-means Clustering Applied to the Classification of <i>Glycyrrhiza uralensis</i> Communities in North China

Ecological Study of Forests Dominated by Endangered Species, Taxus Chinensis Var. Mairei , in Shanxi of China

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Soil organic matter quantity and quality in mountain soils of the Alay Range, Kyrgyzia, affected by land use change

Cited by 75 publications

References 10 publications

The human impact on the transformation of juniper forest landscape in the western part of the Pamir-Alay range (Tajikistan)

The human impact on the transformation of juniper forest landscape in the western part of the Pamir-Alay range (Tajikistan)

Fuzzy C-means Clustering Applied to the Classification of &lt;i&gt;Glycyrrhiza uralensis&lt;/i&gt; Communities in North China

Ecological Study of Forests Dominated by Endangered Species, Taxus Chinensis Var. Mairei , in Shanxi of China

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Fuzzy C-means Clustering Applied to the Classification of <i>Glycyrrhiza uralensis</i> Communities in North China