Effects of soil moisture on organic and inorganic nitrogen uptake by dominant plant species in Zoigê alpine wetlands

Chen, Liang; Yue, Yi; Gao, Jun-Qin; Zhang, Xiaoya; Li, Qianwei; Yu, Fei‐Hai

doi:10.1016/j.ecolind.2022.109087

Cited by 7 publications

(2 citation statements)

References 52 publications

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“…This is attributed to the fact that soil moisture is one of the main abiotic factors that influence N availability from organic sources of soil. Soil moisture is capable of modifying soil aeration and influencing N transformation and dynamics, including mineralization, nitrification, and denitrification processes [43,44]. It is worth mentioning that water is essential for all reactions catalyzed by microorganisms; nitrogen mineralization is included within these reactions [45].…”

Section: Discussionmentioning

confidence: 99%

Soil Quality Assessment in Response to Water Erosion and Mining Activity

et al. 2023

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Erosion significantly decreases the depth of a soil, the nutrients available for plants, the organic matter and, consequently, the productivity of the edaphic environment. Due to the above considerations, the objective of this study was to evaluate, through various properties, the quality of two eroded soils, one eroded by water and the other by mining activity, amended with biosolids. The quality for both soils was estimated through the selection of a minimum set of data by means of principal component analysis (PCA) and the subsequent realization of correlations, multiple regressions and finally calculations of normalized values (Vn) of those properties considered as indicators of soil quality. According to the results, inorganic nitrogen (NI) and respiratory activity (RA) were the properties selected as indicators to assess quality. For soil eroded by water and by mining activity, NI presented a low and very low quality, respectively (class 4 and 5 of quality according to the calculation of Vn). The quality of RA in soil eroded by mining extraction was very high (quality class 1 according to Vn), and thus it can be considered an ideal indicator for the evaluation of soil quality due to its sensitivity to anthropogenic changes (mining) in soil.

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Section: Discussionmentioning

confidence: 99%

Soil Quality Assessment in Response to Water Erosion and Mining Activity

et al. 2023

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“…These features of clonal physiology resulting in high morphological plasticity give the plant adaptive advantages in different situations of environmental heterogeneity, both in the context of resources and conditions. Modular plasticity of P. anserina has been studied with respect to light and nutrient variability [62][63][64], heavy metals [65,66], sand burial [67], and soil moisture [68]. It can be generalized from the above studies that clonal integration and functional specialization of ramets are indeed prominent adaptive characteristics in order to cope with environmental disturbances as well as resource heterogeneity.…”

Section: Potentilla Anserinamentioning

confidence: 99%

Halophytic Clonal Plant Species: Important Functional Aspects for Existence in Heterogeneous Saline Habitats

Ievinsh

2023

Plants

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Plant modularity-related traits are important ecological determinants of vegetation composition, dynamics, and resilience. While simple changes in plant biomass resulting from salt treatments are usually considered a sufficient indicator for resistance vs. susceptibility to salinity, plants with a clonal growth pattern show complex responses to changes in environmental conditions. Due to physiological integration, clonal plants often have adaptive advantages in highly heterogeneous or disturbed habitats. Although halophytes native to various heterogeneous habitats have been extensively studied, no special attention has been paid to the peculiarities of salt tolerance mechanisms of clonal halophytes. Therefore, the aim of the present review is to identify probable and possible halophytic plant species belonging to different types of clonal growth and to analyze available scientific information on responses to salinity in these species. Examples, including halophytes with different types of clonal growth, will be analyzed, such as based on differences in the degree of physiological integration, ramet persistence, rate of clonal expansion, salinity-induced clonality, etc.

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Submergence in the Dry Season Alters Microbial Nitrogen Transformations in the Root Zone of Carex cinerascens: A Mesocosm Study in One Floodplain Lake

et al. 2023

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The increasing demand for water resources has triggered a series of water level regulation (WLR) projects, which exerts considerable effects on local hydrologic conditions. In particular, artificial impoundments, which may occur during the dry season in wetlands, increase the periods of waterlogging. However, little is known about their potential effects on biogeochemical cycling. To evaluate how impoundments affect nitrogen (N) cycling in the floodplain ecosystem, we conducted a mesocosm experiment to investigate N dynamics and the potential N-gene changes in the root-zone soil of the dominant plant in one large floodplain lake (Poyang Lake, China). The results indicated that, compared with the control, the 12 cm submergence treatment (SP 12 ) caused NH 4 + -N accumulation in the root-zone soil on day 14 and day 41. On the contrary, NO 3 − -N levels in SP 12 were statistically lower than those in the control from day 7 to day 28. The curve of organic N had a tendency of declining as a whole. Changes in N-gene abundances revealed that SP 12 significantly inhibited nitrification and enhanced denitrification in root-zone soil. Moreover, SP 12 enhanced the links and complexity of the N-gene network, reflecting the increased correlations among the N transformations under flooding stress. Considering the increasing demand for WLR worldwide, the study about the effects of anti-seasonal submergence on biogeochemical cycling in floodplains provides insight into the ecological impacts of anthropogenic activities. Supplementary Information The online version contains supplementary material available at 10.1007/s13157-022-01656-1.

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Effects of soil moisture on organic and inorganic nitrogen uptake by dominant plant species in Zoigê alpine wetlands

Cited by 7 publications

References 52 publications

Soil Quality Assessment in Response to Water Erosion and Mining Activity

Soil Quality Assessment in Response to Water Erosion and Mining Activity

Halophytic Clonal Plant Species: Important Functional Aspects for Existence in Heterogeneous Saline Habitats

Submergence in the Dry Season Alters Microbial Nitrogen Transformations in the Root Zone of Carex cinerascens: A Mesocosm Study in One Floodplain Lake

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