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  1. Artikel ; Online: Exploring Rural Resilient Factors Based on Spatial Resilience Theory

    Yiwei Yang / Yanhui Wang

    Land, Vol 12, Iss 1677, p

    A Case Study of Southern Jiangsu

    2023  Band 1677

    Abstract: In the process of rapid urbanization in China, rural areas are facing increasingly complex changes and challenges. Resilience theory provides a multidimensional perspective of the sustainable development of rural regions. As a subset of the broader ... ...

    Abstract In the process of rapid urbanization in China, rural areas are facing increasingly complex changes and challenges. Resilience theory provides a multidimensional perspective of the sustainable development of rural regions. As a subset of the broader resilience framework, spatial resilience focuses on inter-component relationships and systematic characteristics at the spatial level. It projects the potential of resilience theory into the spatial domain of human habitats. This paper endeavors to integrate spatial resilience theory into the field of rural built environments. At the village level, relevant factors were extracted, and an exploratory analysis focusing on rural spatial resilience was conducted. Twenty-one villages in southern Jiangsu at various resilience levels were selected as empirical cases. Fuzzy-set qualitative comparative analysis (fsQCA) was employed to identify four configurations with sufficient conditions for rural spatial resilience. Furthermore, through an analysis of typical villages, the effective mechanisms of the relevant resilience factors were also elucidated. Our findings reveal several key points: (1) rural spatial resilience relies on an optimal combination of multiple factors rather than a single factor; (2) there are multiple potential pathways through which to enhance rural resilience; (3) and the configuration analysis of the rural factors of spatial resilience helps to narrow the distance between spatial resilience theory and spatial practice. This study validates and refines the application of spatial resilience theory in the context of the rural built environment. Corresponding suggestions are proposed for building a resilient countryside, aiming to provide support and reference for future development strategies in rural areas.
    Schlagwörter spatial resilience ; rural resilience ; qualitative comparative analysis ; fuzzy-set QCA ; rural built environment ; southern Jiangsu ; Agriculture ; S
    Thema/Rubrik (Code) 910
    Sprache Englisch
    Erscheinungsdatum 2023-08-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: DMAU-Net

    Yang Yang / Junwu Dong / Yanhui Wang / Bibo Yu / Zhigang Yang

    Remote Sensing, Vol 15, Iss 1328, p

    An Attention-Based Multiscale Max-Pooling Dense Network for the Semantic Segmentation in VHR Remote-Sensing Images

    2023  Band 1328

    Abstract: High-resolution remote-sensing images cover more feature information, including texture, structure, shape, and other geometric details, while the relationships among target features are more complex. These factors make it more complicated for classical ... ...

    Abstract High-resolution remote-sensing images cover more feature information, including texture, structure, shape, and other geometric details, while the relationships among target features are more complex. These factors make it more complicated for classical convolutional neural networks to obtain ideal results when performing a feature classification on remote-sensing images. To address this issue, we proposed an attention-based multiscale max-pooling dense network (DMAU-Net), which is based on U-Net for ground object classification. The network is designed with an integrated max-pooling module that incorporates dense connections in the encoder part to enhance the quality of the feature map, and thus improve the feature-extraction capability of the network. Equally, in the decoding, we introduce the Efficient Channel Attention (ECA) module, which can strengthen the effective features and suppress the irrelevant information. To validate the ground object classification performance of the multi-pooling integration network proposed in this paper, we conducted experiments on the Vaihingen and Potsdam datasets provided by the International Society for Photogrammetry and Remote Sensing (ISPRS). We compared DMAU-Net with other mainstream semantic segmentation models. The experimental results show that the DMAU-Net proposed in this paper effectively improves the accuracy of the feature classification of high-resolution remote-sensing images. The feature boundaries obtained by DMAU-Net are clear and regionally complete, enhancing the ability to optimize the edges of features.
    Schlagwörter high-resolution remote-sensing images ; ground object classification ; dense connections ; multiscale maximum pooling ; semantic segmentation ; Science ; Q
    Thema/Rubrik (Code) 004
    Sprache Englisch
    Erscheinungsdatum 2023-02-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel ; Online: Elevated CO 2 Altered Rice VOCs Aggravate Population Occurrence of Brown Planthoppers by Improving Host Selection Ability

    Yanhui Wang / Runzhao Li / Xiaohui Wang / Xiaowei Liu / Fajun Chen

    Biology, Vol 11, Iss 882, p

    2022  Band 882

    Abstract: It is predicted that plant volatile organic compounds (VOCs) are affected by the atmospheric CO 2 levels rising globally, which further affects the interaction between plants and herbivorous insects, especially the host selection behavior of herbivorous ... ...

    Abstract It is predicted that plant volatile organic compounds (VOCs) are affected by the atmospheric CO 2 levels rising globally, which further affects the interaction between plants and herbivorous insects, especially the host selection behavior of herbivorous insects. In this study, the effects of elevated CO 2 on the host-selection behavior of the brown planthopper (BPH) Nilaparvata lugens , and the emission of VOCs from the healthy and BPH-damaged rice plants were studied simultaneously to make clear the population occurrence of BPH under global climate change. Compared with ambient CO 2 , elevated CO 2 significantly increased the host selection percent of BPH for the healthy (CK) and BPH-damaged rice plants, and the host selection percent of BPH for the BPH-damaged rice plants was significantly higher than that for the healthy rice plants under elevated CO 2 , which might be regulated by the transcription levels of OBP1 , OBP2 and CSP8 in BPH due to the upregulated transcriptional levels of these three genes of BPH under elevated CO 2 . In addition, we analyzed and quantified the emission of VOCs in rice plants grown under ambient CO 2 and elevated CO 2 by GS-MS. A total of 36 VOCs from rice plants were identified into eight categories, including alkanes, alkenes, alcohols, aldehydes, ketones, esters, phenols and aromatic hydrocarbons. Elevated CO 2 significantly decreased the contents of heptadecane, linalool and limonene from rice plants compared with ambient CO 2 . Besides, the contents of linalool, phytol, decanal, 1-methyldecalin and 2,6-diphenylphenol from BPH-damaged rice plants under ambient CO 2 , and undecane, hexadecane, nonanal and 2,6-diphenylphenol from BPH-damaged rice plants under elevated CO 2 were all significantly higher than those from healthy rice plants. The percentage composition of phenols was positively correlated with the host selection rate of BPH. Our study indicates that elevated CO 2 is beneficial to promote the host selection ability of BPH for rice plants damaged by BPHs due to the ...
    Schlagwörter elevated CO 2 ; rice plants ; volatile organic compounds ; Nilaparvata lugens ; host selection behavior ; Biology (General) ; QH301-705.5
    Thema/Rubrik (Code) 580
    Sprache Englisch
    Erscheinungsdatum 2022-06-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel ; Online: Impacts of Site Conditions and Stand Structure on the Biomass Allocation of Single Trees in Larch Plantations of Liupan Mountains of Northwest China

    Xiao Wang / Xiaonan Huang / Yanhui Wang / Pengtao Yu / Jianbin Guo

    Forests, Vol 13, Iss 177, p

    2022  Band 177

    Abstract: Understanding the determinants of tree biomass allocation patterns among organs is crucial for both predicting the rate and potential of forest carbon sinks and guiding future multifunctional forest management. However, it is still not clear how the site ...

    Abstract Understanding the determinants of tree biomass allocation patterns among organs is crucial for both predicting the rate and potential of forest carbon sinks and guiding future multifunctional forest management. However, it is still not clear how the site conditions (e.g., elevation) and stand structure (e.g., tree dominance, stand density) affect the biomass allocation of single trees in forests. This study was implemented in the Liupan Mountains of the Loess Plateau of Northwest China by collecting the related information of biomass data of 110 sample trees with different dominance and influencing factors within 23 sample plots of larch plantations set up along the elevation gradient. Based on these data, the response tendency and functions of biomass allocation of single trees to individual influencing factors of site conditions and forest structure were analyzed. Moreover, the results illustrated that the ratio between root biomass and aboveground biomass decreased significantly with rising stand age and tree density, but increased significantly with rising elevation, and there was no significant relationship with the dominance of individual trees. The results of this study revealed the importance of considering the influencing factors of site conditions and stand structure when developing dynamic models of tree biomass allocation. The results and research methods used in this study provide useful tools for quantifying the biomass allocation and carbon storage partitioning in the study area and other similar regions.
    Schlagwörter biomass allocation ; site conditions ; stand structure ; larch plantations ; Plant ecology ; QK900-989
    Sprache Englisch
    Erscheinungsdatum 2022-01-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  5. Artikel ; Online: Reconstruction of the rRNA Sequences of LUCA, with Bioinformatic Implication of the Local Similarities Shared by Them

    Yu Men / Guoliang Lu / Yanhui Wang / Jinzhong Lin / Qiang Xie

    Biology, Vol 11, Iss 837, p

    2022  Band 837

    Abstract: The theory of the RNA world, especially with the catalytic capability of RNA, provides a reasonable framework explaining the evolution of molecular genetics system before the scenario of the central dogma. However, it remains a challenge to deduce the ... ...

    Abstract The theory of the RNA world, especially with the catalytic capability of RNA, provides a reasonable framework explaining the evolution of molecular genetics system before the scenario of the central dogma. However, it remains a challenge to deduce the origin mechanism of rRNAs. Here we reconstructed the phylogenetic relationships of archaea and bacteria with bootstrap values of most nodes, especially the deep ones, higher than 90%. Based on the well-resolved tree, the full lengths of 16S, 5S, and 23S rRNA sequences of the last universal common ancestor (LUCA) were reconstructed for the first time. The potential similarities shared by the three ancestral rRNA sequences were further explored by searching for repeat short fragments in the level of purine–pyrimidine (RY) with certain lengths and arrangements. With the lengths ranging from 2 to 14, functional short fragments could be found in the three RNAs. As a representative, a set with a total of 75 short fragments of 11 nucleotides in length can recover all types of the known functional sites of ribosomes in a most concise manner. The 75 short fragments cluster around the functional center of the ribosome, among which 18 of them are highly conserved across five or six kingdoms and still contain all types of known functional sites except one. Alternatively, according to the strategy using the level of AUGC instead of RY, a similar pattern can be recovered. Such results indicate the local similarities shared by 16S, 5S, and 23S rRNAs and thus suggest a possible general mechanism in the formation of the LUCA rRNAs.
    Schlagwörter ribosomal RNA ; structure ; last universal common ancestor ; ancestral sequence ; ribosome ; Biology (General) ; QH301-705.5
    Thema/Rubrik (Code) 500
    Sprache Englisch
    Erscheinungsdatum 2022-05-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  6. Artikel ; Online: Dependence on Mountains and Water

    Xiangrui Xiong / Yanhui Wang / Melisa Pesoa-Marcilla / Joaquín Sabaté-Bel

    Land, Vol 11, Iss 8, p

    Local Characteristics and Regeneration Patterns of Rural Industrial Heritage in China

    2022  Band 1341

    Abstract: In most Chinese villages, mountains and water are essential resources for human life, which residents have established close connections with through subsistence and production activities. These connections involve geographical, functional, and spiritual ...

    Abstract In most Chinese villages, mountains and water are essential resources for human life, which residents have established close connections with through subsistence and production activities. These connections involve geographical, functional, and spiritual effects, which create the unique cultural identity of a place. As a kind of rural heritage, rural industrial heritage is a concrete result of the interaction between local activities and mountains and water, thus presenting specific local characteristics. The conservation and re-use of rural heritage have become an important issue in global rural studies. Different cases that have been transformed and re-used are analyzed in this paper, in order to explore the influence of mountains and water on their local characteristics, the effects on their conservation and re-use in both spiritual and functional aspects, and suitable regeneration patterns based on local characteristics. Comparative analysis of 3D maps, diagrams, and literature materials indicate that: (1) mountains and water dominate rural industrial heritage geographical characteristics, including their layout, size, and form; (2) the direct or indirect supports of mountains and water, in terms of functional and spiritual aspects, have changed after regeneration, where spiritual supports are becoming increasingly important; and (3) regeneration patterns with different focuses represent new habitats combining natural and artificial landscapes, indicating new relationships that shift from the single utilization of mountain and water resources in the past to symbiosis and mutual benefits between residents, heritage, nature, and local communities in the modern context.
    Schlagwörter rural cultural landscape ; geographical relationship ; locality ; regeneration ; industrial heritage ; Agriculture ; S
    Thema/Rubrik (Code) 950
    Sprache Englisch
    Erscheinungsdatum 2022-08-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  7. Artikel ; Online: Assessment of Land Degradation at the Local Level in Response to SDG 15.3

    Zhanxing Li / Yanhui Wang / Junwu Dong / Xiaoyue Luo / Hao Wu / Yuan Wan

    Sustainability, Vol 15, Iss 4392, p

    A Case Study of the Inner Mongolia Region from 2000 to 2020

    2023  Band 4392

    Abstract: SDG15.3 aims to achieve “Land Degradation Neutrality (LDN)”, but its only indicator (SDG15.3.1) is designed for national-level assessment and monitoring, and is not suitable for local-level applications. Thus, taking Inner Mongolia as the study area, ... ...

    Abstract SDG15.3 aims to achieve “Land Degradation Neutrality (LDN)”, but its only indicator (SDG15.3.1) is designed for national-level assessment and monitoring, and is not suitable for local-level applications. Thus, taking Inner Mongolia as the study area, this paper provides a localized reform of SDG15.3.1 based on the local context, and assesses the progress of SDG15.3 in the study area (2000-2020) at multiple levels (indicator, specific, and overall). The Moran’I and Standard Deviation Ellipse (SDE) are also utilized to analyze the spatial–temporal change of land degradation. The results show that as of 2020, the proportion of land degradation and improvement areas to the total area was 7.51% and 9.42%, respectively. Inner Mongolia had generally met the goal of SDG15.3, but on the indicator level, water erosion still falls far below the standard of SDG15.3. Additionally, at the spatial level, 3 out of 12 municipalities and 71 out of 103 counties had not achieved LDN, with a pattern of low LDN levels in the southeast and high in the northwest at the county scale. This indicates that the progress of SDG15.3 is extremely uneven both at the indicator and spatial levels. Thus, it is essential to continue to promote land degradation management in Inner Mongolia to achieve LDN in the entire area and across all aspects.
    Schlagwörter sustainable development goal 15.3 ; land degradation neutrality (LDN) ; local level ; localized assessment ; spatial–temporal distribution ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
    Thema/Rubrik (Code) 710
    Sprache Englisch
    Erscheinungsdatum 2023-03-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  8. Artikel ; Online: Differentiated responses of daytime and nighttime sap flow to soil water deficit in a larch plantation in Northwest China

    Zebin Liu / Songping Yu / Lihong Xu / Yanhui Wang / Pengtao Yu / Yang Chao

    Agricultural Water Management, Vol 289, Iss , Pp 108540- (2023)

    2023  

    Abstract: Tree transpiration contributes to the forest water budget and its environmental responses differ between daytime and nighttime. Elucidating these divergent responses separately from their biophysical controls is crucial for ascertaining the forest-water ... ...

    Abstract Tree transpiration contributes to the forest water budget and its environmental responses differ between daytime and nighttime. Elucidating these divergent responses separately from their biophysical controls is crucial for ascertaining the forest-water relationship in changing environments. To investigate the biophysical controls on daytime and nighttime sap flow (Qd and Qn), the sap flux density, meteorological conditions, soil moisture, and canopy leaf area index (LAI) were simultaneously monitored in a Larix principis-rupprechtii plantation in the Liupan Mountains of Northwest China during the growing seasons (June to September) of three hydrological years (2019, 2021, and 2022). The results showed that the main control factors for Qd and Qn varied depending on the timescale. The variation in Qd was mainly controlled by daytime solar radiation (Rd), vapour pressure deficit (VPDd), relative extractable soil water (REWd) and LAI at a daily scale, but only by Rd at a monthly scale and only by VPDd at an interannual scale. The variation in Qn was mainly controlled by the nighttime vapour pressure deficit (VPDn) and relative extractable soil water (REWn), LAI, and Qd at a daily scale but only by VPDn at monthly and interannual scales. The responses of Qd and Qn to soil water deficit were different and varied by timescale. At the daily scale, the effect of VPDd on Qd became weak, while the effect of VPDn on Qn became strong in drier years (2021 and 2022). At the monthly scale, as the main controlling factor of the monthly variation in Qd (Qn), Rd (VPDn) played a decisive role in the wet (dry) months. At the interannual scale, VPD limited Qd but drove Qn, leading to a decrease in Qd and an increase in Qn with increasing soil water deficit. Overall, our findings revealed the different responses of Qd and Qn to biophysical factors and underscored that Qd and Qn should be explored both separately and synchronously; additionally, our results indicated that the proportion of Qn might increase if soil water stress is ...
    Schlagwörter Larix principis-rupprechtii plantation ; Transpiration ; Biophysical controls ; Soil water stress ; Multiple timescales ; Agriculture (General) ; S1-972 ; Agricultural industries ; HD9000-9495
    Thema/Rubrik (Code) 550
    Sprache Englisch
    Erscheinungsdatum 2023-11-01T00:00:00Z
    Verlag Elsevier
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  9. Artikel ; Online: A New Approach of 3D Lightning Location Based on Pearson Correlation Combined with Empirical Mode Decomposition

    Yanhui Wang / Yingchang Min / Yali Liu / Guo Zhao

    Remote Sensing, Vol 13, Iss 3883, p

    2021  Band 3883

    Abstract: To improve the accuracy of pulse matching and the mapping quality of lightning discharges, the Pearson correlation method combined with empirical mode decomposition (EMD) is introduced for discharge electric field pulse matching. This paper uses the new ... ...

    Abstract To improve the accuracy of pulse matching and the mapping quality of lightning discharges, the Pearson correlation method combined with empirical mode decomposition (EMD) is introduced for discharge electric field pulse matching. This paper uses the new method to locate the lightning channels of an intra-cloud (IC) lightning flash and a cloud-to-ground (CG) lightning flash and analyzes the location results for the two lightning flashes. The results show that this method has a good performance in lightning location. Compared with the pulse-peak feature matching method, the positioning results of the new method are significantly improved, which is mainly due to the much larger number of positioning points (matched pulses). The number of located radiation sources has increased by nearly a factor of seven, which can significantly improve the continuity of the lightning channel and clearly distinguish the developmental characteristics. In the CG flash, there were three negative recoil streamers in the positive leader channel. After the three negative recoil streamers were finished, taking approximately 1 ms, 12 ms, and 2 ms, respectively, the negative leader channel underwent a K -process. The three negative recoil streamers are not connected to the K -processes in the negative leader channel. We think that the three negative recoil streamers may have triggered the three K -processes, respectively.
    Schlagwörter lightning 3D location ; EMD ; Pearson correlation ; pulse matching ; negative recoil streamer ; Science ; Q
    Thema/Rubrik (Code) 600
    Sprache Englisch
    Erscheinungsdatum 2021-09-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  10. Artikel ; Online: Modelling cascading failures in networks with the harmonic closeness.

    Yucheng Hao / Limin Jia / Yanhui Wang / Zhichao He

    PLoS ONE, Vol 16, Iss 1, p e

    2021  Band 0243801

    Abstract: Many studies on cascading failures adopt the degree or the betweenness of a node to define its load. From a novel perspective, we propose an approach to obtain initial loads considering the harmonic closeness and the impact of neighboring nodes. Based on ...

    Abstract Many studies on cascading failures adopt the degree or the betweenness of a node to define its load. From a novel perspective, we propose an approach to obtain initial loads considering the harmonic closeness and the impact of neighboring nodes. Based on simulation results for different adjustable parameter θ, local parameter δ and proportion of attacked nodes f, it is found that in scale-free networks (SF networks), small-world networks (SW networks) and Erdos-Renyi networks (ER networks), there exists a negative correlation between optimal θ and δ. By the removal of the low load node, cascading failures are more likely to occur in some cases. In addition, we find a valuable result that our method yields better performance compared with other methods in SF networks with an arbitrary f, SW and ER networks with large f. Moreover, the method concerning the harmonic closeness makes these three model networks more robust for different average degrees. Finally, we perform the simulations on twenty real networks, whose results verify that our method is also effective to distribute the initial load in different real networks.
    Schlagwörter Medicine ; R ; Science ; Q
    Thema/Rubrik (Code) 000
    Sprache Englisch
    Erscheinungsdatum 2021-01-01T00:00:00Z
    Verlag Public Library of Science (PLoS)
    Dokumenttyp Artikel ; Online
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