Effects of Haloxylon spp. of Different Age Classes on Vegetation Cover and Soil Properties on an Arid Desert Steppe in Iran

Ebrahimi, Mahdieh; Mohammadi, Fatemeh; Fakhireh, A; Bameri, Abolfazl

doi:10.1016/s1002-0160(17)60378-3

Cited by 8 publications

(13 citation statements)

References 54 publications

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“…The coverage and type of vegetation were recorded in each quadrat. The percentage of total plant cover was obtained, using the quadrat estimation methods 9 . The height of the tallest (longest) stem and crown width along the long and perpendicular axis were recorded for each plant.…”

Section: Methodsmentioning

confidence: 99%

Effect of topography and protecting barriers on revegetation of sandy land, Southern Tibetan Plateau

Liao

Liu

et al. 2019

Sci Rep

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Revegetation on sandy land has attracted worldwide attention, especially on the extremely fragile alpine eco-region of the Tibetan Plateau. However, the effectiveness of revegetation and its controlling factors have rarely been reported. We collected plant growths and species composition from seven field sites in 2011 and conducted a follow-up random investigation in 2016. The indicators, including richness and diversity, were used to compare the differences among these sites based on redundancy and cluster analyses. The results indicated that plant growth has different characteristics in different land types. The distribution and growth of Artemisia sphaerocephala , Artemisia younghusbandii and Heteropappus gouldii varied with topography, and the crown widths of A. sphaerocephala were 100.6 cm × 87.2 cm on barchan dune and 26.0 cm × 25.4 cm on moving sandy land at valley slopes. These species are likely the pioneer plants for revegetation on sandy land. It seems that sand-protecting barriers play an important role in revegetation. The stone and plastic checkerboard barriers increase plant diversity, while straw barrier promotes the plant growth. These findings provide useful guidance to the ongoing vegetation recovery on sandy land, an important component of the Project on Construction and Protection of Ecological Security Barriers on the Tibetan Plateau.

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Section: Methodsmentioning

confidence: 99%

Effect of topography and protecting barriers on revegetation of sandy land, Southern Tibetan Plateau

Liao

Liu

et al. 2019

Sci Rep

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“…Established species can improve environmental conditions worldwide (Ebrahimi et al, 2019). The microclimate created in the understory of the cultivated species reduces the effect of a Each column has different capital case letters indicating significant changes between the under canopy and inter canopy of the same afforestation years (t-test).…”

Section: Discussionmentioning

confidence: 99%

“…In these areas, soil erosion and desertification are among the processes directly or indirectly threatening water and soil resources strongly. The restoration of vegetation in degraded rangelands can have a considerable effect on reducing soil erosion and preventing further land degradation (Ebrahimi et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…For instance, several species, such as Calligonum polygonoides, L., C. bungei Boiss, and C. comosum (L`Her), have been widely cultured for forestry and desertification control (Amiraslani and Dragovich, 2011;Rigi Pardad et al, 2021). However, cultivating native, non-native, and adaptable species in arid lands to revive vegetation requires a great deal of analysis and assessment (Ebrahimi et al, 2019). These programs should study the effect of cultivated species on the soil and vegetation where they are planted.…”

Section: Introductionmentioning

confidence: 99%

“…Programs for restoring vegetation in arid areas have multiple objectives: creating secondary succession (Ebrahimi et al, 2019;Udayana et al, 2019), curbing wind and water erosion, improving soil quality and fertility, increasing carbon (C) and nitrogen (N) storage in aerial and below-ground plant biomass, cleaning the air, reducing greenhouse gases, and ultimately increasing the plant production. Therefore, restoring vegetation can play a substantial role in sustainable development and ecosystem health (Cao et al, 2011;An et al, 2019;Udayana et al, 2019;Hu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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The relationship between succession and reclamation of desertified areas in artificial forests of Calligonum spp. in an arid desert of southeastern Iran

Ebrahimi

Saberi

2022

Front. Environ. Sci.

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This research investigates the association between the succession and restoration of degraded land in the southeast of Iran with artificial Calligonum forests regarding vegetation changes, soil properties, carbon (C) and nitrogen (N) pools in vegetation and soil. Eight forestry sites were selected, aged 1, 4, 6, 9, 11, 16, 25, and 30 years. Observations indicated that vegetation percentage, density, frequency, richness, and diversity of species substantially increased (p < 0.01). The highest percentage of vegetation (80.30%), density (62.70 n ha−1), richness (14.15), and diversity (0.90) was observed in the 30-year site. At the end of the succession phase under study (the 25- and 30-year sites), the variation trend of vegetation was steady. As the age of the forests increased, the soil nutrient values increased significantly during succession (p < 0.01), even though acidity and electrical conductivity (EC) did not change significantly over time (p > 0.01). In the early stages of succession, the soil’s C and N pools (aerial biomass, root, and litter) did not increase significantly (p > 0.01). Over time, however, C and N pools of the soil and plants increased (the highest amounts were seen in the 30-year site). The results indicated a significant difference in the soil and vegetation properties in the forestry sites. In general, planting native species and the succession of vegetation can play an effective role in preserving the environment in degraded lands and increasing the C and N pools.

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Impact of precipitation and grazing on recovery of plant vegetation in temperate grasslands

Lin,

Zhao,

Zhang

et al. 2023

Land Degrad Dev

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Grasslands support a rich diversity that plays a pivotal role in ecological balance, carbon sequestration, and climate regulation. Grassland ecosystems are facing a loss of biodiversity and a decline in soil function due to precipitation variations caused by climate change. However, variations in grassland species diversity are not clearly known, especially under the combined effects of precipitation and grazing. Based on a 5‐year split‐plot experiment with two grazing regimes (i.e., moderate grazing and grazing prohibition) along with three precipitation controls (ambient precipitation and ±50% precipitation) in Inner Mongolian grasslands, we researched the response of precipitation variability and grazing prohibition to vegetation diversity indices and investigated the response of vegetation community composition and biomass to these factors. Five years results showed that increasing precipitation resulted in a significant increase in the coverage of perennial forbs, annual and biennial plants, and Gramineae. Grazing prohibition and increased precipitation significantly increased biomass and species richness compared to all other treatment combinations. Interestingly, grazing exclusion significantly reduced the percentage of Amaryllidaceae, especially in the presence of altered precipitation. The vegetation community composition of a typical grassland was correlated with soil volumetric water content (VWC), bulk density (SBD) and pH, soil organic carbon (SOC), and total nitrogen (TN). VWC, SBD, and TN were found to be the most significant factors affecting vegetation diversity under grazing. Partial canonical ordination revealed that soil moisture, soil bulk density, and SOC had the most significant correlation with vegetation diversity under both grazing prohibition and increased precipitation treatment conditions. These results suggested that alterations in precipitation can change the species composition and ecosystem function of plant communities, leading to a close relationship between species diversity and soil properties. Our results underline the importance of species diversity for soil characteristics and environmental factors in a typical Eurasian steppe ecosystem.

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Effects of Haloxylon spp. of Different Age Classes on Vegetation Cover and Soil Properties on an Arid Desert Steppe in Iran

Cited by 8 publications

References 54 publications

Effect of topography and protecting barriers on revegetation of sandy land, Southern Tibetan Plateau

Effect of topography and protecting barriers on revegetation of sandy land, Southern Tibetan Plateau

The relationship between succession and reclamation of desertified areas in artificial forests of Calligonum spp. in an arid desert of southeastern Iran

Impact of precipitation and grazing on recovery of plant vegetation in temperate grasslands

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