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Article ; Online: Uneven impacts of COVID-19 on residents' utilization of urban parks: A case study of Guangzhou, China

Li, Li / Li, Xiaojian / Niu, Ning / He, Jialin

Applied Geography. 2023 Apr., v. 153 p.102905-

2023

Abstract: As COVID-19 increased people's dependency on urban parks for physical and psychological well-being, it also has uncertain impacts on park utilization. Understanding these impacts and how the pandemic has contributed to them is an issue that warrants ... ...

Abstract	As COVID-19 increased people's dependency on urban parks for physical and psychological well-being, it also has uncertain impacts on park utilization. Understanding these impacts and how the pandemic has contributed to them is an issue that warrants urgent attention. We used multi-source spatio-temporal data to examine urban park use before and during COVID-19 in Guangzhou, China, and constructed a set of regression models to evaluate the associated factors. We found that COVID-19 has significantly reduced the overall utilization of urban parks while also exacerbating spatial unevenness. This was due to residents' limited movement distance, and the diminished role of urban transportation affecting the efficient citywide use of parks. Meanwhile, residents' increased demand for nearby parks amplified the importance of community parks, which exacerbated the consequences caused by the uneven distribution of park resources. We propose that city administrators improve the efficiency of existing parks and prioritize the adequate placement of community parks at urban fringes to improve access. Furthermore, cities with similar layouts as Guangzhou should plan for urban parks from a multi-perspective and consider the sub-city level differences to address unevenness during the current pandemic and in the future.
Keywords	COVID-19 infection ; case studies ; geography ; pandemic ; transportation ; urban parks ; China ; Unevenness ; Urban park utilization ; COVID-19 ; Guangzhou
Language	English
Dates of publication	2023-04
Publishing place	Elsevier Ltd
Document type	Article ; Online
ISSN	0143-6228
DOI	10.1016/j.apgeog.2023.102905
Database	NAL-Catalogue (AGRICOLA)

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Article: Uneven impacts of COVID-19 on residents' utilization of urban parks: A case study of Guangzhou, China.

Li, Li / Li, Xiaojian / Niu, Ning / He, Jialin

Applied geography (Sevenoaks, England)

2023 Volume 153, Page(s) 102905

Abstract	As COVID-19 increased people's dependency on urban parks for physical and psychological well-being, it also has uncertain impacts on park utilization. Understanding these impacts and how the pandemic has contributed to them is an issue that warrants urgent attention. We used multi-source spatio-temporal data to examine urban park use before and during COVID-19 in Guangzhou, China, and constructed a set of regression models to evaluate the associated factors. We found that COVID-19 has significantly reduced the overall utilization of urban parks while also exacerbating spatial unevenness. This was due to residents' limited movement distance, and the diminished role of urban transportation affecting the efficient citywide use of parks. Meanwhile, residents' increased demand for nearby parks amplified the importance of community parks, which exacerbated the consequences caused by the uneven distribution of park resources. We propose that city administrators improve the efficiency of existing parks and prioritize the adequate placement of community parks at urban fringes to improve access. Furthermore, cities with similar layouts as Guangzhou should plan for urban parks from a multi-perspective and consider the sub-city level differences to address unevenness during the current pandemic and in the future.
Language	English
Publishing date	2023-02-17
Publishing country	England
Document type	Journal Article
ISSN	0143-6228
ISSN	0143-6228
DOI	10.1016/j.apgeog.2023.102905
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Enhanced catalytic activity of Fe–Ce catalysts determined by synergistic effect of different precursors in selective catalytic reduction of NOx with NH3

Guo, Zining / Niu, Ning / Wang, Jia / Li, Ting / Ding, Aifang / Wang, Xiaobo

Journal of Chemical Technology & Biotechnology. 2023 Feb., v. 98, no. 2 p.395-403

2023

Abstract: BACKGROUND: Developing environmentally benign and non‐vanadium SCR catalysts remains a challenging task for NOx abatement. In this article, Fe–Ce catalysts including Fe–Ce(S) and Fe(S)–Ce catalysts with different molar ratios of Fe/Ce were synthesized by ...

Abstract	BACKGROUND: Developing environmentally benign and non‐vanadium SCR catalysts remains a challenging task for NOx abatement. In this article, Fe–Ce catalysts including Fe–Ce(S) and Fe(S)–Ce catalysts with different molar ratios of Fe/Ce were synthesized by different precursors of active species expecting to gain high catalytic activity for the selective catalytic reduction (SCR) of NOx with NH₃ in a wide temperature range. RESULTS: The Fe–Ce(S) catalyst exhibited better catalytic activity than the Fe(S)–Ce catalyst. The characterization results indicated the Fe–Ce(S)catalyst possessed better dispersion of active species, which would favor the contact of active sites and reactant molecules and thus enhance the catalytic performance. Moreover, higher ratios of Fe³⁺ and Ce³⁺ and more surface chemisorbed oxygen were observed over the Fe–Ce(S) catalyst. In addition, the Fe–Ce(S) catalyst held better low‐temperature redox properties and more weak acid sites. CONCLUSIONS: The precursor effect was closely related to the catalytic activity of catalysts. All of the mentioned above might be the main reasons for the superior catalytic performance of the Fe–Ce(S) catalyst, especially at low temperatures. These findings indicate that Fe–Ce(S) catalyst is a promising catalyst for the SCR reaction to replace V‐W‐Ti catalysts and can provide guidance for the development of environmentally benign and non‐vanadium SCR catalysts. © 2022 Society of Chemical Industry (SCI).
Keywords	biotechnology ; catalysts ; catalytic activity ; oxygen ; synergism ; temperature
Language	English
Dates of publication	2023-02
Size	p. 395-403.
Publishing place	John Wiley & Sons, Ltd.
Document type	Article ; Online
Note	JOURNAL ARTICLE
ZDB-ID	1479465-2
ISSN	1097-4660 ; 0268-2575
ISSN (online)	1097-4660
ISSN	0268-2575
DOI	10.1002/jctb.7250
Database	NAL-Catalogue (AGRICOLA)

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Article: Factors Affecting the Long-Term Development of Specialized Agricultural Villages North and South of Huai River

Li, Li / Niu, Ning / Li, Xiaojian

Land. 2021 Nov. 09, v. 10, no. 11

2021

Abstract: Village-level agricultural specialization in China is becoming increasingly important for rural development. However, existing knowledge of specialized agricultural villages (SAVs) based on singular assessment criteria and data describing static time ... ...

Abstract	Village-level agricultural specialization in China is becoming increasingly important for rural development. However, existing knowledge of specialized agricultural villages (SAVs) based on singular assessment criteria and data describing static time points becomes insufficient in addressing multifaceted developmental questions today. We examined the long-term development patterns of SAVs in Anhui, China, with attributes from multiple angles, and explored how local factors affected SAV development across space and time using random forest regression. We found that as time elapsed, economic rationality drove specialized farmers closer to sale dependency and made SAVs more susceptible to market and economic factors, which builds upon previous findings analyzing SAVs at specific time points and consolidates the importance of market factors in the long-term development of SAVs. However, this susceptibility manifests differently in these two geographically contrasting regions north and south of Huai River. The northern SAVs received increased influences from market and economic factors, while the southern SAVs were continuously controlled by market and location factors. The dynamic spatial and temporal patterns of the two regions point to different dependencies, which emphasized local sales in the north and distant sales in the south. We propose that policies and strategies regarding SAV development accommodate these dynamics and address appropriate influencing factors accordingly.
Keywords	algorithms ; land ; markets ; rivers ; rural development ; space and time ; China
Language	English
Dates of publication	2021-1109
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2682955-1
ISSN	2073-445X
ISSN	2073-445X
DOI	10.3390/land10111215
Database	NAL-Catalogue (AGRICOLA)

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Article: Exploring the Spatio-Temporal Dynamics of Development of Specialized Agricultural Villages in the Underdeveloped Region of China

Niu, Ning / Li, Xiaojian / Li, Li

Land. 2021 July 02, v. 10, no. 7

2021

Abstract: The development of specialized agricultural villages (DSAVs) is essential for rural revitalization. However, most current studies focus on the formation of specialized agricultural villages (SAVs), while the interpretation of DSAVs from the perspective ... ...

Abstract	The development of specialized agricultural villages (DSAVs) is essential for rural revitalization. However, most current studies focus on the formation of specialized agricultural villages (SAVs), while the interpretation of DSAVs from the perspective of the geographical factors is still missing. In this study, we firstly employed the kernel density estimation to analyze the spatial pattern of DSAVs and then utilized the Geographic Detectors to explore which geographical factor(s) affected the SAVs of Henan, China in the formation (in 2010), steady (2011–2014), and rapid development (2015–2019) period of SAVs. The DSAVs were measured by gross product (GP), the employment rate (ER), and farmers’ income (FI) of SAVs. Eleven indicators described the geographic factors in five categories: terrains, resources, locations, markets, and economy. The results showed that the spatial pattern of DSAVs was from relatively uneven in the early formation to significantly clustering in the development period of SAVs. Specialized shiitake and Chinese herbal villages clustered in the mountain–plain transition zone. The aggregation of specialized coarse cereals villages was in the hill–plain transition zone. Specialized fruit and livestock villages gathered in the plain region. Further analyses were in these regions; compared with SAVs’ formation’s critical factors, the importance of terrain and location factors to DSAVs was decreasing, while market and economic factors were increasing in the development period of SAVs. The strongest changing was the development of specialized shiitake villages in the mountain–plain transition zone. These findings could provide guidance for the direction of DSAVs in underdeveloped areas.
Keywords	employment ; fruits ; land ; landscapes ; livestock ; markets ; mushrooms ; statistical analysis ; China
Language	English
Dates of publication	2021-0702
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2682955-1
ISSN	2073-445X
ISSN	2073-445X
DOI	10.3390/land10070698
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Willingness of returning migrant workers to purchase houses

Wang Yuchan / Gao Genghe / Ning Xiaoju / Li Yuanzheng / Niu Ning / Guo Yaqi

Regional Sustainability, Vol 3, Iss 2, Pp 133-

A case study of 45 villages in Henan Province, China

2022 Volume 145

Abstract: The willingness of returning migrant workers to purchase houses has an important impact on local urbanization. At present, there are few researches on the willingness of returning migrant workers to purchase houses. The existing researches mostly focus ... ...

Abstract	The willingness of returning migrant workers to purchase houses has an important impact on local urbanization. At present, there are few researches on the willingness of returning migrant workers to purchase houses. The existing researches mostly focus on the perspective of sociology and economics, and few studies are conducted from the perspective of geography. Based on the survey data of 45 villages in Henan Province of China in 2019, this study used binary logistic method to study the influencing factors of the willingness of returning migrant workers to purchase houses. The willingness of returning migrant workers to purchase houses is affected by many factors, such as personal, family, village, and returning factors. Among them, age and returning period are negatively correlated with the willingness of returning migrant workers to purchase houses. Factors such as years of education, years of working, and per capita income of village are positively correlated with the willingness of returning migrant workers to purchase houses. Returning migrant workers in plains and hilly areas are more willing to purchase houses than those in mountainous areas. The formation of the willingness to purchase houses is mainly related to economic foundation, age, marital status, and other factors. Returning migrant workers are becoming more willing to purchase houses, and the expected locations are mainly concentrated in the county seats. In the context of China's high density of rural population and rapid urbanization, more returning migrant workers are expected to purchase houses in cities and towns for the sake of employment, marriage, children's education, and access to public services. As a result, there is an extensive market of potential purchasers, which affects the development of the local urban real estate industry and is of great significance for returning migrant workers to truly integrate into the cities. However, some returning migrant workers still choose to purchase houses in villages, mainly affected by ...
Keywords	Returning migrant workers ; House purchase willingness ; Binary logistic method ; Urbanization ; Henan Province ; Science (General) ; Q1-390 ; Geology ; QE1-996.5
Subject code	720 ; 300
Language	English
Publishing date	2022-06-01T00:00:00Z
Publisher	KeAi Communications Co. Ltd.
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Research on the Purification Performance of a Floating Island System Treating the Effluent of WWTP Under Different Seasons

Peng, Zhao-xu / Niu, Ning-qi / Li, Ting-mei / Yu, Lu-ji / Gu, Li-kun / Liu, Minghui

Water Air Soil Pollut. 2023 Mar., v. 234, no. 3 p.152-152

2023

Abstract: In order to improve the purification performance of the floating island under fluctuated temperature and flow, a floating island system was constructed through Rumex japonicus Houtt (RJH), Iris sibirica (IS), and artificial aquatic mat (AAM) to treat the ...

Abstract	In order to improve the purification performance of the floating island under fluctuated temperature and flow, a floating island system was constructed through Rumex japonicus Houtt (RJH), Iris sibirica (IS), and artificial aquatic mat (AAM) to treat the effluent from secondary clarifier. The performances under different flow in cold season (6.9–17.9 ℃) and warm season (24.6–29.8 ℃) were investigated. The results showed AAM was the main nitrification unit enriched with Nitrosomonas (0.1134–0.1832%) and Nitrospira (0.1914–1.8124%). The matrix of IS and RJH provided an ideal denitrification place enriched with Azospira (0.3724–0.4411%, 0.2902–0.7517%), and abundant Pseudomonas was found on the root of RJH (12.32–13.67%). Under the same flow, the nitrification activity was bigger in warm season; there was a close correlation between the removal efficiencies of total nitrogen (TN) and NO₃⁻–N (R² = 0.9940) in cold season. This study clarified the variations of microbial communities of the floating island systems under different temperatures and hydraulic retention times (HRTs) and provided guidance to compensate in-situ purification performance through optimizing plant species and constitution.
Keywords	Azospira ; Iris sibirica ; Nitrosomonas ; Pseudomonas ; Rumex ; air ; cold season ; denitrification ; nitrification ; soil ; temperature ; total nitrogen ; warm season ; water
Language	English
Dates of publication	2023-03
Size	p. 152.
Publishing place	Springer International Publishing
Document type	Article ; Online
ZDB-ID	120499-3
ISSN	1573-2932 ; 0049-6979 ; 0043-1168
ISSN (online)	1573-2932
ISSN	0049-6979 ; 0043-1168
DOI	10.1007/s11270-023-06129-7
Database	NAL-Catalogue (AGRICOLA)

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Article: Automatic detection for the world's rarest primates based on a tropical rainforest environment

Wang, Xiaolei / Wen, Shaoping / Niu, Ning / Wang, Guanjun / Long, Wenxing / Zou, Yonghua / Huang, Mengxing

Global ecology and conservation. 2022 Oct., v. 38

2022

Abstract: Hainan gibbons are the most endangered primates in the world and are at risk of extinction at any time. Infrared trigger camera technology is one of the most effective means at present, however, the data obtained are characterized by massive ... ...

Abstract	Hainan gibbons are the most endangered primates in the world and are at risk of extinction at any time. Infrared trigger camera technology is one of the most effective means at present, however, the data obtained are characterized by massive fragmentation, which is not conducive to post-processing and analysis. Therefore, a computer vision detection model for Hainan gibbons is proposed for the first time in this paper. Because of the foggy tropical rainforest, the image is pre-processed through an image filter whose parameters are obtained from a convolutional neural network. And then input it to the YOLO V3 network for Hainan gibbon detection. We produced a dataset containing 6000 images of Hainan gibbons for experimental training. The detection quality of Hainan gibbons based on YOLO V3 and image-filter YOLO (IF-YOLO) was evaluated. The results show that IF-YOLO maintains excellent performance on sunny days while improving the weakness of YOLO. Increasing the content of the dataset will extend the kinds of species detected by the model, which opens up new avenues for detecting others species in harsh conditions.
Keywords	automatic detection ; cameras ; computer vision ; data collection ; ecology ; extinction ; neural networks ; risk ; tropical rain forests ; China
Language	English
Dates of publication	2022-10
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	2814786-8
ISSN	2351-9894
ISSN	2351-9894
DOI	10.1016/j.gecco.2022.e02250
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Adsorption of Cr(VI) from wastewater by iron-modified coconut shell biochar

Bu Jiangping / Li Wenyu / Niu Ning / Guo Ning / Zhou Hao / Chen Cheng / Ding Aifang

E3S Web of Conferences, Vol 248, p

2021 Volume 01059

Abstract: This study is aimed to investigate the effect of raw and Fe-modified coconut shell biochar on the adsorption of Cr(VI) in the wastewater. Fe-modified biochar was obtained from the impregnation with FeNO3 solutions and the surface functional groups of two ...

Abstract	This study is aimed to investigate the effect of raw and Fe-modified coconut shell biochar on the adsorption of Cr(VI) in the wastewater. Fe-modified biochar was obtained from the impregnation with FeNO3 solutions and the surface functional groups of two biochars were examined by infrared spectrometer.The result showed that the Fe-modified biochar had lower abundance of the surface functional groups than that of raw biochar, and had the group of Fe-O.The removal rate of Cr(VI) increased by 94.89% compared with the raw biochar because of existing of the group of Fe-O . The removal rate of Cr(VI) by modified biochar could reach more than 99.0% when the concentration of Cr(VI) was 12μg/ mL, pH 4.0, adsorbent dosage was 0.2g and adsorption time was 2h.
Keywords	Environmental sciences ; GE1-350
Language	English
Publishing date	2021-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: ¹⁵N tracer-based analysis of fertiliser nitrogen accumulation, utilisation and distribution in processing tomato at different growth stages

Jing, Bo / Niu, Ning / Zhang, Wenlong / Wang, Jiangli / Diao, Ming

Acta agriculturæ Scandinavica. 2020 Nov. 16, v. 70, no. 8

2020

Abstract: The unnecessary application of nitrogen could negatively impact both the yield and quality of crops, and could also lead to nitrate leaching and soil pollution. The objective of this study was to investigate the effects of the optimized nitrogen ... ...

Abstract	The unnecessary application of nitrogen could negatively impact both the yield and quality of crops, and could also lead to nitrate leaching and soil pollution. The objective of this study was to investigate the effects of the optimized nitrogen application on ¹⁵N accumulation, utilization and distribution of processing tomato in China. Through field experiments with ¹⁵N and consisted two treatments: optimized nitrogen application (NY) and no nitrogen application (N0). The results showed that the absorption efficiency of applied fertilizer nitrogen was 46%. In processing tomato plants, 128.9 kg ha⁻¹ of nitrogen came from applied fertilizer, while the remainder of the nitrogen (177.6 kg ha⁻¹) came from the soil. The processing tomato fully absorbed the soil nitrogen, which reduced the nitrogen loss rate and resulted in higher production of dry matter. In the harvest stage. The residual percentage in soil of applied fertilizer nitrogen was 34%, which was mainly distributed in the 0-40 cm soil layer. This reduced the leaching of nitrogen and was conducive to the reuse of crops in the next year. This study provides a reference for the development of precise nitrogen management techniques using drip irrigation methods in arid areas..
Keywords	absorption ; administrative management ; crops ; developmental stages ; field experimentation ; leaching ; lead ; microirrigation ; nitrates ; nitrogen ; nitrogen fertilizers ; soil ; soil pollution ; tomatoes ; China
Language	English
Dates of publication	2020-1116
Size	p. 620-627.
Publishing place	Taylor & Francis
Document type	Article
Note	NAL-light
ZDB-ID	32458-9
ISSN	1651-1913 ; 0906-4710
ISSN (online)	1651-1913
ISSN	0906-4710
DOI	10.1080/09064710.2020.1825786
Database	NAL-Catalogue (AGRICOLA)

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