Vegetation-environment relationships in the forests of Chitral district Hindukush range of Pakistan

Khan, Nasrullah; Shaukat, Syed Shahid; Ahmed, Moinuddin; Siddiqui, Muhammad Faheem

doi:10.1007/s11676-013-0346-9

Cited by 34 publications

(20 citation statements)

References 42 publications

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“…Juglans regia, Populus nigra, Dalbergia sissoo, Cedrella serreta, Pyrus communis, Prunus armeniaca and Monotheca buxifolia and some other species did not occur in all the sample plots and communities (groups) with very low importance values, reflecting the narrow distribution of these species (Table 1). The role of aspects in the distribution of different species and forest types is described in detail by several workers (see Jin et al 2008;Habibullah 2010;Khan et al 2013). In the present study, P. roxburghii did occur in three groups but often cultivated in the graveyards by the forest department or by local communities.…”

Section: Species Composition Of the Olea Ferruginea Forestssupporting

confidence: 64%

“…(Table 1). The vegetation types dominated by O. ferruginea in the present study sites were located on gentle (0-15°) slope as documented by Khan et al (2013). However, among these species M. buxifolia and P. granatum are valuable fruit yielding species and frequently distributed with Olea ferruginea at upper elevations below the Pinus roxburghii zone ).…”

Section: Species Composition Of the Olea Ferruginea Forestsmentioning

confidence: 51%

“…These areas lies in the northern part of Pakistan spanning between 36.50° N latitude and 72.73° E longitudes (Figure 1), characterized by rugged terrain and vales with elevation ranging from 700-7708 m (Hazrat et al 2008;Khan et al 2013). Malakand hills, Buner, Swat and district Dir after the army takeover during the period from 2011 to 2012.…”

Section: Methodsmentioning

confidence: 99%

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Composition, structure and regeneration dynamics of Olea ferruginea Royle forests from Hindukush range of Pakistan

Khan

Ali

et al. 2015

J. Mt. Sci.

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Malakand across its d pressure in were taken seeds for information address th composition Olea ferru Hindukush five commu identified u Total tree d and basal a having a rel of 48% to 9 of the dom generally lo in the stu ferruginea that forests in previous owing to s (mean max Comp ferrug Pakist NASRU FAYAZ KISHW SHAHI 1 Labor 2500 2 Depa 3 Instit Citatio ferrugi 013-28 © ScieFigure 7 Linear relationship between diameter and age of Olea ferruginea trees in Malakand division.

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Section: Species Composition Of the Olea Ferruginea Forestssupporting

confidence: 64%

Section: Species Composition Of the Olea Ferruginea Forestsmentioning

confidence: 51%

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Composition, structure and regeneration dynamics of Olea ferruginea Royle forests from Hindukush range of Pakistan

Khan

Ali

et al. 2015

J. Mt. Sci.

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“…This may explain the postulated lower to high elevation gradient of species composition in the study area. Khan (2012) noted prominent variations in species distribution in these mountain forests in respect to soil moisture regime and other environmental variables, but the elevation gradient was overriding in the vegetation distribution of northern mountains as reported by several authors (e.g., Ahmed et al, 2011;Khan et al, 2011Khan et al, , 2013Khan, 2012;Ali et al, 2013).…”

Section: Classification Of Vegetationmentioning

confidence: 66%

The influence of environmental variables on Punica granatum L.assemblages in subtropical dry temperate woodland in the districtof Lower Dir, Khyber Pakhtunkhwa, Pakistan

Irshad¹,

Khan²,

Ali³

et al. 2016

Turk J Bot

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Punica granatum L. (Wild) is an important fruit-yielding species of the world and a source of income for people, particularly in the Hindukush-Himalayas of Pakistan. Considering its ecological and commercial importance, an attempt was made to provide a primary assessment of its compositional pattern with relation to environmental variables for ecologically unexplored Punica granatum forests located in a subtropical dry temperate zone using multivariate techniques. The vegetation data were collected from 40 Punica granatum forest stands along with the associated environmental data (12 variables) at different locations. Classification of the stands was carried out using Ward's agglomerative cluster analysis. In total, 20 tree species belonging to 13 families of 19 genera with 78 understories were surveyed. Finally, nonmetric multidimensional scaling ordination with associated Monte Carlo permutation tests was performed to explore the patterns of variation in vegetation distribution explained by the environmental variables. Four community types were identified in different altitudinal and microclimatic thickets that significantly varied in species composition. The soil physical properties, i.e. sand and clay, forming an amalgam with chemical properties, i.e. N +1 and K +1 concentrations, were the most influential variables responsible for distribution of Punica granatum and associated species and compositional variation in the subtropical dry temperate areas of Pakistan. The present study will help in the understanding of conservation and management of this ecologically and commercially important species and will provide baseline information for other forests species growing in the area.

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“…Quantitative analysis provides an important method for ecological research related to vegetation, and gradient analysis is the most widely used method in plant ecological studies (Song et al 2009;Kent 2011;Khan et al 2013). Gradient analysis is a technique of ordination, in which the quadrats (or plant species) are arranged in a certain space, so that the ordination axis can reflect certain ecological gradients.…”

Section: Introductionmentioning

confidence: 99%

Relationships between Artemisia ordosica communities and environmental factors following sand-dune stabilization in the Mu Us desert, northwest China

et al. 2016

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Artemisia ordosica is an excellent sand-fixing shrub for sand stabilization in northwestern China. Sand dune stabilization, a critically important process, leads changes in abiotic factors, such as soil structure and nutrient contents. However, the effects of factors on an A. ordosica community following sand stabilization remain unclear. In this study, we used canonical correspondence analysis (CCA) to examine the relationships between A. ordosica communities and environmental factors at three habitats: semi-fixed dune (SF), fixed dune with low-coverage biological soil crust (F), and fixed dune with highcoverage biological soil crust (FC) in Mu Us desert. The mean height and coverage of plants increased with sand stabilization, while species diversity and richness increased initially and then reduced significantly. Correlation analysis and CCA revealed that slope, soil organic carbon, and nutrient contents, proportion of fine soil particles, soil moisture, and thickness of biological soil crust were all highly correlated with vegetation characteristics. These environmental factors could explain 40.42 % of the vegetation-environment relationships at the three habitats. The distribution of plant species was positively related to soil moisture in the SF dune. Soil moisture, soil nutrient, and fine-particle contents mainly affected plants distribution in the F dune. In the FC dune, distribution of plant species was positively and negatively correlated with the thickness of biological soil crust and soil moisture at a depth 0-20 cm, respectively. The dominance value of typical steppe species increased significantly following sand-dune stabilization and relations between species and samples in CCA ordination bi-plots showed that perennial grasses could invade the A. ordosica community on FC, indicating A. ordosica communities had a tendency to change into typical steppe vegetation with the further fixation. We conclude that the significant differentiation not only occurred in community characteristics, but also in the relationships between vegetation and environmental factors among the three stages of dune fixation. So, restoration of degraded dune ecosystems should be based on habitat conditions and ecological needs.

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Vegetation-environment relationships in the forests of Chitral district Hindukush range of Pakistan

Cited by 34 publications

References 42 publications

Composition, structure and regeneration dynamics of Olea ferruginea Royle forests from Hindukush range of Pakistan

Composition, structure and regeneration dynamics of Olea ferruginea Royle forests from Hindukush range of Pakistan

The influence of environmental variables on Punica granatum L.assemblages in subtropical dry temperate woodland in the districtof Lower Dir, Khyber Pakhtunkhwa, Pakistan

Relationships between Artemisia ordosica communities and environmental factors following sand-dune stabilization in the Mu Us desert, northwest China

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