Protection efficiency assessment and quality of coastal shelterbelt for Dongshan Island at the coastal section scale

Wu, Liyun; Ji, Zhirong; Wang, You; Tan, Yong; Zhen, Xiaoyan; Yang, Jianwen

doi:10.1007/s11676-016-0325-z

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…The bay with a mouth about 5 km wide is of about 20 km long and 15 km wide, covering a sea area about 250 km 2 . As a key fishery and shell production area in China, Dongshan Bay features a subtropical maritime monsoon climate with a mean annual temperature of 21.0 °C (Wu et al, 2017). This climate fosters the growth and reproduction of aquatic animals.…”

Section: Introductionmentioning

confidence: 99%

Vertical distribution and pollution assessment of TN, TP, and TOC in the sediment cores of cage farming areas in Dongshan Bay of southeast China

Zhen-Zhen,

Jian,

Miao-Feng

et al. 2023

Front. Environ. Sci.

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Cage farming is an important means of aquacultural production, while its potential environmental pollution needs to be further investigated. In this study, Dongshan Bay was taken as an example to investigate whether long-term cage farming in a semi-closed bay would cause environmental pollution via vertical distribution assessment. The four sediment cores (YB1, YB2, B1, and B2) were collected from two cage farming areas. Total nitrogen (TN), total organic carbon (TOC), and total phosphorus (TP) were measured. The results showed a negative correlation between TN and TOC and the sediment depth at four sampling sites, and TP was also negatively correlated with the depth at three sites. The average TN (1,405.8, 1,413.8, 1,115.7, and 936.1 mgkg−1) and TP (1,206, 1,141.6, 1,064.6, and 932.8 mgkg−1) values of the four sites were markedly higher than the safety level, with the indexes STN, STP, FF, and ON of the four sites indicating moderate to severe pollution of nitrogen and phosphorus. Particularly, the YB1 and YB2 sites in the area with lower current speed have more severe pollution. The C/N ratio uncovered that the organic matter (OM) might mainly derived from the phytoplankton and nonfibrous plants as a result of excessive fish feed and feces. Collectively, the results indicated that long-term (more than 10 years) cage farming activity in a semi-closed bay such as Dongshan Bay had a negative impact on the environmental quality. Despite limitations in sample size and the absence of stable isotopic analyses, this study enhances our understanding of environmental changes and endogenous pollution risks in shallow marine aquaculture areas. Moreover, it suggests practical approaches such as implementing alternative farming and fallowing periods, should be conducted to mitigate the pollution.

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Section: Introductionmentioning

confidence: 99%

Vertical distribution and pollution assessment of TN, TP, and TOC in the sediment cores of cage farming areas in Dongshan Bay of southeast China

Zhen-Zhen,

Jian,

Miao-Feng

et al. 2023

Front. Environ. Sci.

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“…Shelterbelts provide both public and private benefits, commonly referred to as environmental services [32]. Private benefits include protecting soil, homes, farm infrastructure, and livestock from the elements [23,28,[32][33][34], reducing animal odor from livestock systems, lowering the risk of crop environmental damage due to pesticide spray-drift [24,28,35], reducing noise [13], and heating costs for households and livestock operations [7,28]. It is estimated that shelterbelts can save up to 18% in energy costs for heating homes [36].…”

Section: Environmental Services Provided By Shelterbeltsmentioning

confidence: 99%

Above- and Below-Ground Carbon Sequestration in Shelterbelt Trees in Canada: A Review

Mayrinck

Laroque

Amichev

et al. 2019

Forests

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Shelterbelts have been planted around the world for many reasons. Recently, due to increasing awareness of climate change risks, shelterbelt agroforestry systems have received special attention because of the environmental services they provide, including their greenhouse gas (GHG) mitigation potential. This paper aims to discuss shelterbelt history in Canada, and the environmental benefits they provide, focusing on carbon sequestration potential, above- and below-ground. Shelterbelt establishment in Canada dates back to more than a century ago, when their main use was protecting the soil, farm infrastructure and livestock from the elements. As minimal-and no-till systems have become more prevalent among agricultural producers, soil has been less exposed and less vulnerable to wind erosion, so the practice of planting and maintaining shelterbelts has declined in recent decades. In addition, as farm equipment has grown in size to meet the demands of larger landowners, shelterbelts are being removed to increase efficiency and machine maneuverability in the field. This trend of shelterbelt removal prevents shelterbelt’s climate change mitigation potential to be fully achieved. For example, in the last century, shelterbelts have sequestered 4.85 Tg C in Saskatchewan. To increase our understanding of carbon sequestration by shelterbelts, in 2013, the Government of Canada launched the Agricultural Greenhouse Gases Program (AGGP). In five years, 27 million dollars were spent supporting technologies and practices to mitigate GHG release on agricultural land, including understanding shelterbelt carbon sequestration and to encourage planting on farms. All these topics are further explained in this paper as an attempt to inform and promote shelterbelts as a climate change mitigation tool on agricultural lands.

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“…The motion similarity of humanoid robot arm can be comprehensively evaluated based on the projection value. 12 However, the projection pursuit evaluation model can only build a static evaluation model, which is only suitable for single moment evaluation. In the static evaluation model with different time intervals, the index weight vectors are different from each other.…”

Section: Introductionmentioning

confidence: 99%

Motion similarity comprehensive evaluation of humanoid robot arm based on dynamic comprehensive evaluation method

Zhao

Yan

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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The purpose of this paper is to propose a suitable comprehensive evaluation method for motion similarity comprehensive evaluation of humanoid robot. Different humanoid robot operation tasks with different complexity degree were selected. The indexes of humanoid robot arm motion were used in the fields of robotics and ergonomics. A static comprehensive evaluation model was established based on the projection pursuit evaluation method. However, the static evaluation model is only suitable for single time point evaluation without the time dimension. A dynamic comprehensive evaluation method, based on the projection pursuit evaluation method with information entropy and time degrees, was proposed by linearly weighting the index weight of the static model at each time point according to the timing-weighted vectors. The comparison between the motion similarity comprehensive evaluation results obtained from the static and the dynamic comprehensive evaluation models demonstrated that the similarity in motion based on the dynamic comprehensive evaluation model is higher. The comparison of the reliability, similarity, and dispersion between the static and the dynamic comprehensive evaluation models showed that the dynamic comprehensive evaluation result had better accuracy, stability, and lower dispersion, and the result was more reasonable and credible. Therefore, the dynamic comprehensive evaluation method proposed in this paper is more suitable for the motion similarity comprehensive evaluation of humanoid robot arm.

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Protection efficiency assessment and quality of coastal shelterbelt for Dongshan Island at the coastal section scale

Cited by 9 publications

References 23 publications

Vertical distribution and pollution assessment of TN, TP, and TOC in the sediment cores of cage farming areas in Dongshan Bay of southeast China

Vertical distribution and pollution assessment of TN, TP, and TOC in the sediment cores of cage farming areas in Dongshan Bay of southeast China

Above- and Below-Ground Carbon Sequestration in Shelterbelt Trees in Canada: A Review

Motion similarity comprehensive evaluation of humanoid robot arm based on dynamic comprehensive evaluation method

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