Response of soil physico-chemical properties to restoration approaches and submergence in the water level fluctuation zone of the Danjiangkou Reservoir, China

Xiao, Shijun; Zhang, KeRong; Zhang, Quanfa; Wang, Weibo

doi:10.1016/j.ecoenv.2017.07.023

Cited by 29 publications

(15 citation statements)

References 38 publications

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“…Our results showed that the rhizosphere bacteria of plants in the Danjiangkou Reservoir WLFZ primarily comprised 24 phyla (e.g., Proteobacteria, Acidobacteria, Actinobacteria, and Gemmatimonadetes) and 362 genera (e.g., Sphingomonas, Haliangium, Lysobacter, Gemmatimonas, and Massilia), demonstrating the richness of the bacterial community composition at this site. In WLFZs, plants can absorb nutrients such as N and P, which are subsequently returned to the soil in the form of organic residues and aboveground litter, leading to changes in soil properties [6,9]. Measurements of soil physical and chemical properties showed that the rhizosphere soils of all four plants had higher organic matter and lower TN contents than those observed in the bare soil samples ( Table 1).…”

Section: Bacterial Community Composition and Its Influence In The Wlfmentioning

confidence: 98%

“…This study was conducted in the Caijiadu, located in the Xijiadian town of Dangjiangkou city, Hubei province, China (32 • 34'39.45" N, 111 • 30'45.15" E). After the original surface soil (10 cm thick topsoil) was removed, vegetation restoration was carried out along the elevation from 155 m to 170 m in March 2013 [6]. Herbs (C. dactylon and C. zizanioides), trees (M. glyptostroboides), and shrubs (S. matsudana) were planted between the elevations of 155 and 170 m. Samplings were conducted on 10 June 2017 when the water level of the study area was about 145 m. Rhizosphere soil (three biological replicates for each sample) was obtained by firstly gently shaking off the loosely bound soil, while the rhizosphere soil adhering to the root system was isolated by more vigorous shaking or by hand [28].…”

Section: Study Site Sampling and Soil Physicochemical Propertiesmentioning

confidence: 99%

“…Long-term monitoring indicates that due to pollution from agricultural nonpoint sources and rural domestic sewage, the Danjiangkou Reservoir receives large nitrogen (N) and phosphorus (P) loads. The potential risk of releasing nutrients from the newly inundated area of the reservoir cannot be ignored [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Rhizosphere Bacterial Community Structure and Predicted Functional Analysis in the Water-Level Fluctuation Zone of the Danjiangkou Reservoir in China During the Dry Period

Shao

Lin

et al. 2020

IJERPH

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The water-level fluctuation zone (WLFZ) is a transitional zone between terrestrial and aquatic ecosystems. Plant communities that are constructed artificially in the WLFZ can absorb and retain nutrients such as nitrogen (N) and phosphorus (P). However, the microbial community composition and function associated with this process have not been elucidated. In this study, four artificially constructed plant communities, including those of herbs (Cynodon dactylon and Chrysopogon zizanioides), trees (Metasequoia glyptostroboides), and shrubs (Salix matsudana) from the newly formed WLFZ of the Danjiangkou Reservoir were evaluated. The bacterial community compositions were analyzed by 16S rRNA gene sequencing using a MiSeq platform, and the functions of these communities were assessed via Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt) analysis. The results showed that the bacterial communities primarily comprised 362 genera from 24 phyla, such as Proteobacteria, Acidobacteria, Actinobacteria, and Gemmatimonadetes, showing the richness of the community composition. Planting altered the bacterial community composition, with varying effects observed among the different plant types. The bacterial community functional analysis revealed that these bacteria were primarily associated with six biological metabolic pathway categories (e.g., metabolism, genetic information processing, and environmental information processing) with 34 subfunctions, showing the richness of community functions. The planting of M. glyptostroboides, S. matsudana, and C. dactylon improved the metabolic capabilities of bacterial communities. N- and P-cycling gene analysis showed that planting altered the N- and P-cycling metabolic capacities of soil bacteria. The overall N- and P-metabolic capacity was highly similar between C. dactylon and C. zizanioides samples and between S. matsudana and M. glyptostroboides samples. The results of this study provide a preliminary analysis of soil bacterial community structure and function in the WLFZ of the Danjiangkou Reservoir and provides a reference for vegetation construction in this zone.

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Section: Bacterial Community Composition and Its Influence In The Wlfmentioning

confidence: 98%

Section: Study Site Sampling and Soil Physicochemical Propertiesmentioning

confidence: 99%

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Rhizosphere Bacterial Community Structure and Predicted Functional Analysis in the Water-Level Fluctuation Zone of the Danjiangkou Reservoir in China During the Dry Period

Shao

Lin

et al. 2020

IJERPH

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“…The soil chemistry properties are still unstable. On the contrary, after flooding, physical properties such as soil water content, bulk density, and others change [ 79 , 80 ], and high temperatures in T1 control the plant-soil-microbial system.…”

Section: Discussionmentioning

confidence: 99%

Artificial Plantation Responses to Periodic Submergence in Massive Dam and Reservoir Riparian Zones: Changes in Soil Properties and Bacterial Community Characteristics

Arif

et al. 2021

Biology

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Plant and microbiome interactions are necessary for plant nutrient acquisition. However, relatively little is known about the responses of roots, bulk, and rhizosphere soil microbial communities in different artificial vegetation types (woody and herbaceous) in riparian areas of massive dams and reservoirs. Therefore, this study aims to assess such responses at elevations of 165–170 m a.s.l. in the riparian zones of the Three Gorges Dam Reservoir, China. The samples were collected containing the rhizosphere soil, bulk soil, and roots of herbaceous and woody vegetation at different emergence stages in 2018. Then, all the samples were analyzed to quantify the soil properties, bacterial community characteristics, and their interaction in the early and late emergence phases. In different periods, the weight of dominant soil bacteria, including Proteobacteria, Acidobacteria, Actinobacteria, Chloroflexi, and Cyanobacteria, was higher, and their composition was different in the rhizosphere, bulk soil, and endophytes. Moreover, the soil co-occurrence networks indicated that the weight of soil physical properties was higher than chemical properties in the early emergence stage. In contrast, the weight of chemical properties was relatively higher in the late emergence stage. Furthermore, the richness and diversity of the bacterial community were mainly affected by soil organic matter. This study suggests that these herbaceous and woody vegetation are suitable for planting in reservoir areas affected by hydrology and human disturbance in light of soil nutrients and soil microbial communities, respectively. Additionally, these results provide valuable information to inoculate the soil with key microbiota members by applying fertilizers, potentially improving plant health and soil production.

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“…It can intercept non-point source (NPS) pollutants from upland and therefore plays an important role in reducing the pollution risk of the water resource (de Sosa et al, 2018; Shu et al, 2017;Wei et al, 2017). In recent years, NPS N is becoming the key pollutant endangering the water quality safety in the world (Blackburn et al, 2017;Erisman et al, 2013) In the past studies, a combination of field sampling and mathematical statistics was usually employed to explore the variance of soil N in the riparian zone (Lind et al, 2013;Shu et al, 2017;de Sosa et al, 2018;Ye et al, 2014;Zhong et al, 2018). This type of method is easy to be conducted; however, it is very difficult to adequately yield an explanation of mechanistic processes and to operate it at the catchment scale (Hoang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

The Influences of the South-to-North Water Transfer Project on Nitrogen Removal by Soil in a Terminal Reservoir in a Critical State in China

Xue¹

2019

Appl. Ecol. Env. Res.

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Soil in riparian zone can alleviate the risk of nitrogen pollution for water by releasing gaseous nitrogen (N) fluxes. As a critically terminal riparian zone in China, the Miyun Reservoir riparian zone is dramatically submerged by water delivered by the South-to-North Water Transfer Project (SNWTP), which is the largest inter-basin water transfer scheme worldwide. However, few studies have proposed a framework to estimate the effect of SNWTP on N removal by soil at the scale of the riparian catchment. Therefore, a framework that integrates the eco-hydrological model, remote sensing technology, and scenario setting was developed in this study to simulate the spatiotemporal variation of N emissions and to estimate the influences of SNWTP on N removal by soil in the Miyun riparian catchment between April and September of 2015. The simulated results indicate that N removal in the whole catchment ranged from 48.83 t to 290.58 t between April and September and the total N removal was 871.97 t in 2015. With water level exceeding 150 m and 160 m, the riparian soil had about 35%-60% of its original N pollution mitigation ability. Changing farmland and grassland into forestland can effectively offset the impacts of SNWTP.

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Response of soil physico-chemical properties to restoration approaches and submergence in the water level fluctuation zone of the Danjiangkou Reservoir, China

Cited by 29 publications

References 38 publications

Rhizosphere Bacterial Community Structure and Predicted Functional Analysis in the Water-Level Fluctuation Zone of the Danjiangkou Reservoir in China During the Dry Period

Rhizosphere Bacterial Community Structure and Predicted Functional Analysis in the Water-Level Fluctuation Zone of the Danjiangkou Reservoir in China During the Dry Period

Artificial Plantation Responses to Periodic Submergence in Massive Dam and Reservoir Riparian Zones: Changes in Soil Properties and Bacterial Community Characteristics

The Influences of the South-to-North Water Transfer Project on Nitrogen Removal by Soil in a Terminal Reservoir in a Critical State in China

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