Effects of mechanical and chemical control on invasive <i>Spartina alterniflora</i> in the Yellow River Delta, China

Xie, Baohua; Han, Guoqi; Qiao, Peiyang; Mei, Baoling; Wang, Qing; Zhou, Yingfeng; Zhang, Anfeng; Song, Weimin; Guan, Bo

doi:10.7717/peerj.7655

Cited by 28 publications

(13 citation statements)

References 21 publications

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“…In contrast, S. alterniflora has invaded Chinese coastal wetlands and can threaten the native ecosystems and result in negative ecological effects. Although many measures, including physical (Gao et al, 2014; Xie et al, 2019), chemical (Liang et al, 2019; Qiao et al, 2019), and biological (Zhou et al, 2015) approaches, have been used to control the expansion of invasive plants, some effective, environmentally friendly, and economic techniques should be further investigated (Lu et al, 2020) since these control methods have some disadvantages (e.g., pollution, high cost, and new invasive plants).…”

Section: Discussionmentioning

confidence: 99%

Pyrolysis temperature and feedstock alter the functional groups and carbon sequestration potential of Phragmites australis‐ and Spartina alterniflora‐derived biochars

Wang

Bai

et al. 2021

GCB Bioenergy

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Biochar produced by pyrolysis of biomass under oxygen‐limited conditions has recently attracted increasing attention. To investigate the effects of feedstock and pyrolysis temperature on biochar characteristics, Phragmites australis straw and Spartina alterniflora straw were used to produce biochars at different temperatures from 300 to 500°C with an increment of 50°C. The biochars were characterized by their yields, ash contents, elemental compositions (i.e., carbon [C], hydrogen [H], oxygen [O], and nitrogen [N]), functional groups, dissolved organic carbon (DOC) contents, carbon sequestration potential, higher heating values (HHVs), and production costs. The results illustrated that pyrolysis temperature negatively affected biochar yields, H and O contents. In contrast, biochar produced at high temperature showed high ash contents, C contents, HHVs, and stronger aromaticity with low H/C and O/C ratios. In addition, S. alterniflora‐derived biochar (SB) contained higher ash content but lower C/H/N/O contents and HHVs than P. australis‐derived biochar (PB; p < 0.05). In addition, DOC contents in both SB and PB declined as temperature increased, and SB exhibited higher DOC contents than PB. Fourier transform infrared spectroscopy showed that absorption intensities of –OH, C=O, –CH, and –C–O–C‐stretching vibration declined with increasing temperature. The stability of the biochars was enhanced at high temperatures, and the biochar derived from S. alterniflora at 500°C might have a better carbon sequestration potential according to thermogravimetric analysis. Additionally, cost analysis showed that the production cost of biochar with large‐scale reactor was lower than that with bench‐scale reactor, and SB had a higher cost than PB due to the price of feedstock and drying process for the former. Our results could offer effective information on resource utilization of P. australis and S. alterniflora straw and are valuable for optimizing pyrolysis temperature to tune P. australis and S. alterniflora biochar properties for specific environmental usage.

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Section: Discussionmentioning

confidence: 99%

Pyrolysis temperature and feedstock alter the functional groups and carbon sequestration potential of Phragmites australis‐ and Spartina alterniflora‐derived biochars

Wang

Bai

et al. 2021

GCB Bioenergy

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“…Similarly , Shandong Province published a work plan for controlling S. alterniflora and released its initial results in 2021 [50]. Researchers have proposed a technological system to control the growth of S. alterniflora in different parts of mudflats, including through clipping, clipping and plowing, and terrace flooding [51]. This system focuses on physical control and causes little disturbance to the environment.…”

Section: Recommendations For Managing S Alterniflora Invasionmentioning

confidence: 99%

“…This system focuses on physical control and causes little disturbance to the environment. Owing to local conditions, its cost of comprehensive control was low, its control effect was good, and the one-time effect of different methods was higher than 90% [51]. However, the effectiveness of this technology needs to be verified over a larger area .…”

Section: Recommendations For Managing S Alterniflora Invasionmentioning

confidence: 99%

High-Resolution Mapping Changes in the Invasion of Spartina Alterniflora in the Yellow River Delta

Qiu

Mao

Feng

et al. 2022

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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The propagation of the invasive Spartina alterniflora (S. alterniflora) has seriously affected the health of coastal wetland ecosystems in China and thus requires an urgent response. In this research, we construct a feature vector set containing phenological and other time-series features based on the Google Earth Engine (GEE) platform by combining dense time-series images from the Sentinel-1 and Sentinel-2 satellites. We obtained the dataset of the annual distribution of S. alterniflora in the Yellow River Delta (YRD) from 2016 to 2021 by developing an object-oriented random forest classification model. The results show that S. alterniflora has different phenological features from other wetland plants that played an important role in its classification based on the images. A combination of multiple phenological and temporal features improved the classification accuracy of S. alterniflora (multi-year average OA: 95.38%; UA: 95.01%; PA: 95.17%). Our results suggest that from 2016 to 2021, the growth rate of the area occupied by S. alterniflora was 2.17 km 2 per year, and a new patch of the S. alterniflora appeared in the south of the study area in 2018. The work here provides scientific data to support the monitoring and control of the invasive S. alterniflora at a large scale.

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“…However, because a single physical control method is generally inefficient, the integration of two or three different physical methods is preferred [26]. Although integrated physical control methods have demonstrated effective eradication of S. alterniflora or inhibition of its germination in subsequent years, their effects on the soil ecosystem and its functioning are not clear [28,29]. Invasion control methods can affect the above-ground plant community, which could modify the soil microbial community composition and structure and subsequently affect general soil processes.…”

Section: Introductionmentioning

confidence: 99%

Responses of Soil Microbiota to Different Control Methods of the Spartina alterniflora in the Yellow River Delta

Jiang

Zhou

et al. 2022

Microorganisms

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Spartina alterniflora invasion has negative effects on the structure and functioning of coastal wetland ecosystems. Therefore, many methods for controlling S. alterniflora invasion have been developed. S. alterniflora control methods can affect plant community, which results in changes in microbial communities and subsequent changes in soil ecological processes. However, the effects of controlling S. alterniflora on soil microbial communities remain poorly understood. We aimed to examine the responses of bacterial and fungal communities to invasion control methods (cutting plus tilling treatment: CT; mechanical rolling treatment: MR). Soil bacterial and fungal community diversity and composition structure were assessed using high-throughput sequencing technology. The findings of the study showed that bacterial diversity and richness in the CT treatment reduced substantially, but fungal diversity and richness did not show any remarkable change. Bacterial and fungal diversity and richness in the MR treatment were not affected considerably. In addition, the two control methods significantly changed the soil microbial community structure. The relative abundance of bacteria negatively associated with nutrient cycling increased considerably in the CT treatment. The considerable increases in the relative abundance of certain bacterial taxa in the MR treatment may promote soil nutrient cycling. Compared with mechanical rolling, soil bacterial community diversity and structure were more sensitive to cutting plus tilling.

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Effects of mechanical and chemical control on invasive Spartina alterniflora in the Yellow River Delta, China

Cited by 28 publications

References 21 publications

Pyrolysis temperature and feedstock alter the functional groups and carbon sequestration potential of Phragmites australis‐ and Spartina alterniflora‐derived biochars

Pyrolysis temperature and feedstock alter the functional groups and carbon sequestration potential of Phragmites australis‐ and Spartina alterniflora‐derived biochars

High-Resolution Mapping Changes in the Invasion of Spartina Alterniflora in the Yellow River Delta

Responses of Soil Microbiota to Different Control Methods of the Spartina alterniflora in the Yellow River Delta

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