Experimental sand burial affects seedling survivorship, morphological traits, and biomass allocation of &amp;lt;i&amp;gt;Ulmus pumila&amp;lt;/i&amp;gt; var. &amp;lt;i&amp;gt;sabulosa&amp;lt;/i&amp;gt; in the Horqin Sandy Land, China

Tang, Jiao; Busso, Carlos; Jiang, Deming; Musa, Ala; Wu, Dingfeng; Wang, Yongcui; Miao, Chunping

doi:10.5194/se-7-1085-2016

Cited by 6 publications

(4 citation statements)

References 57 publications

(76 reference statements)

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“…Compared with tall dunes, flat and low fixed dunes can improve the diversity of herbaceous plants and the stability of ecosystems (Tao et al, 2017). Aeolian geomorphic process is an important factor affecting the distribution desert plants and other factors control the growth stages of plants and vegetation distribution by changing soil conditions (Szczuciński, 2012;Hernández-Cordero et al, 2015;Tang et al, 2016). From desert to oasis, the frequency of sand-laden wind, drift potential, and sand transport decreases while the roughness of surface increases (Zhang et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Desert vegetation distribution and species-environment relationships in an oasis-desert ecotone of northwestern China

Zhao

et al. 2019

J. Arid Land

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Environmental heterogeneity significantly affects the structure of ecological communities. Exploring vegetation distribution and its relationship with environmental factors is essential to understanding the abiotic mechanism(s) driving vegetation succession, especially in the ecologically fragile areas. In this study, based on the quantitative analysis of plant community and environmental factors in 68 plots at 10 different transects in the Minqin oasis-desert ecotone (ODE) of northwestern China, we investigated desert vegetation distribution and species-environment relationships using multivariate analysis. Two-way indicator species analysis (TWINSPAN), detrended correspondence analysis (DCA), and canonical correspondence analysis (CCA) methods were used. A total of 28 species, belonging to 27 genera in 8 families, were identified. Chenopodiaceae, Zygophyllaceae, Gramineae, and Leguminosae were the largest families. Annual and perennial herbs accounted for 28.60% of the total number of plants, while shrubs (42.90%) were the most dominant. Nitraria tangutorum was the constructive species of the desert plant community. We divided the 68 plots surveyed in this study into 7 community types, according to the results of TWINSPAN. The distribution of these 7 communities in the DCA ordination graph showed that species with a similar ecotype were clustered together. Results of CCA indicated that groundwater was the dominant factor influencing vegetation distribution, while distance between plot and oasis (Dis) and soil electrical conductivity (EC) were the local second-order factors. Our study suggests that optimizing the utilization of groundwater in oases is key to controlling the degradation of desert vegetation. The favorable topographic conditions of sand dunes should be fully utilized for vegetal dune stabilization, and the influence of soil salinity on the selection of afforestation tree species should be considered.

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Section: Discussionmentioning

confidence: 99%

Desert vegetation distribution and species-environment relationships in an oasis-desert ecotone of northwestern China

Zhao

et al. 2019

J. Arid Land

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“…On the other hand, biomass allocation is generally considered as the basis and vital parameter for understanding how adapt to environmental changes in plant life history ( Li et al., 2010 ; Burylo et al., 2012 ; Tang et al., 2016 ). We observed that wind erosion altered the relative allocation of root, stem and leaf growth in both sexes, and more biomass was allocated to roots in females but allocated to leaves in males by reducing the biomass allocation of stems ( Figure 2 ).…”

Section: Discussionmentioning

confidence: 99%

“…Aeolian environment is regarded as one of the extreme environments that seriously affect plant growth and reproduction in the dune ecosystem of arid and semi-arid areas ( Shi et al., 2004 ; Dech and Maun, 2006 ; Perumal and Maun, 2006 ; Gilbert and Ripley, 2010 ; Tang et al., 2016 ; Fan et al., 2018 ). Affected by windblown sand movement, plants growing on the leeward slopes of dunes often suffer partial or complete sand burial, whereas those on the windward slopes of dunes experience varying degrees of wind erosion ( Luo and Zhao, 2015 ; Luo et al., 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Salix gordejevii females exhibit more resistance against wind erosion than males under aeolian environment

Guo-hou

Wang

et al. 2022

Front. Plant Sci.

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Effects of wind erosion on growth and adaptability have been widely reported in many plants, but little attention has been paid to dioecious plants. Recent studies have shown that sex-specific responses to environmental changes in many plants exist. To explore sexual differences in response to wind erosion, female and male Salix gordejevii saplings growing on inter-dune land (no erosion) and on the windward slope of the dune (20cm wind erosion) in Hunshandake Sandy Land were chosen and their morphology, biomass and physiological traits were investigated, respectively. Wind erosion significantly reduced plant growth, biomass accumulation, gas exchange and chlorophyll fluorescence, and obviously disrupted osmotic regulation function and antioxidant enzyme system in both sexes, especially in males. Under wind erosion condition, females exhibited higher sapling height (SH), basal diameter (BD), leaf dry mass (LDM), root dry mass (RDM), total dry mass (TDM), root percentage in total dry mass, net photosynthesis rate (Pn), maximum efficiency of photosystem II (Fv/Fm), effective quantum yield of PSII (ΦPSII), relative water content (RWC) of leaves, superoxide dismutase (SOD) and peroxidase (POD) activities, but lower malondialdehyde (MDA), proline as well as soluble sugar content than did males. However, no significant sexual differences in most of these traits were observed under no erosion condition. Our results demonstrated that females possess a greater resistance to wind erosion than do males, with females having a better photosynthetic capacity, stronger water retention capacity and more efficient antioxidant system to alleviate negative effects caused by aeolian environment.

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“…Sand deposited behind shrubs is an abiotic factor of habitats for shrub communities in sand regions. Sand burial could impact the seed emergence, seed germination, seedling survival, physiological traits, morphological characteristics, growth, and physiological adaptation and distribution pattern of plants through changing in photosynthesis and respiration of plants and water content of sand (Liu et al, ; Luo et al, ; Luo & Zhao, ; Qu et al, ; Tang et al, ; Teraminami et al, ; Xiao et al, ; Zhang et al, ; Zheng et al, ). But the optimum depth of sand burial for various type plants is different (Luo et al, ; Qu et al, ; Xiao et al, ).…”

Section: Discussionmentioning

confidence: 99%

Converging Effects of Shrubs on Shadow Dune Formation and Sand Trapping

et al. 2019

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Shrubs have a patchy distribution under natural conditions. Spacing, as a quantitative parameter used to describe shrub distribution, influences the formation of vegetated aeolian landforms and sand trapping in sandy regions. In this study, the morphology and development of shadow dunes were investigated in a wind tunnel at different wind velocities for three pairs of various-sized artificial shrubs constructed from live branches and with different spacing patterns. The amount of sand trapped by these shrubs was also measured. With decreasing spacing between two adjacent shrubs, independent dunes, separate dunes that mutually curved toward each other, converging dunes, and coalesced dunes were sequentially observed. Two critical thresholds of shrub spacing were determined, for dune deformation (Td) and dune convergence (Tc). Td and Tc represent the spacings between two adjacent shrubs that result in isolated and independent shadow dunes starting to deform and converge in their tail areas, respectively. The spacing thresholds of shrubs increased with shrub size and decreased with wind velocity. The processes of shadow-dune development for two adjacent shrubs were classified into three types: separate, separate-converging, and coalesced. The amount of sand trapped by shrubs at spacings of Td. The converging effects of shrubs on shadow-dune formation and sand trapping decreased with wind velocity and increased with shrub size. The results suggest that the shadow dune morphology and sand trapping capacity of shrubs are governed by both wind regime and distribution pattern and size of shrubs. Key Points:• Shadow dunes of two adjacent shrubs with independent, separate but curving towards each other, and converging morphologies were observed • Six times difference presented for the amount of sand trapped by shrubs at different spacings • Converging effects of shrubs on shadow dune formation and sand trapping decreased with increasing wind velocity and shrub spacingSupporting Information:• Supporting Information S1 ., et al. (2019). Converging effects of shrubs on shadow dune formation and sand trapping.

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Experimental sand burial affects seedling survivorship, morphological traits, and biomass allocation of <i>Ulmus pumila</i> var. <i>sabulosa</i> in the Horqin Sandy Land, China

Cited by 6 publications

References 57 publications

Desert vegetation distribution and species-environment relationships in an oasis-desert ecotone of northwestern China

Desert vegetation distribution and species-environment relationships in an oasis-desert ecotone of northwestern China

Salix gordejevii females exhibit more resistance against wind erosion than males under aeolian environment

Converging Effects of Shrubs on Shadow Dune Formation and Sand Trapping

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