Zhen Guo

• Doctor of Philosophy
• Associate Professor at First Institute of Oceanography

Accurate shoreline extraction is critical for coastal engineering applications, including erosion monitoring, disaster response, and sustainable management of island ecosystems. However, traditional methods face challenges in large-scale monitoring due to high costs, environmental interference (e.g., cloud cover), and poor performance in complex te...

The degradation of marine and coastal resources, caused mainly by human activities, underscores the urgent need for conservation. In waters around the Sichang Islands, the Bryde’s whale is listed as an endangered marine species. The extensive human activities in this area have raised serious concerns about the possible negative influence on this sp...

Full-waveform airborne LiDAR bathymetry (ALB), which provides waveforms and point clouds, has become an essential technology for shallow water surveys. However, weak seafloor echoes are challenging to detect accurately because of waveform feature confusion caused by the complex measurement environments. To address this issue, waveform feature impor...

Island infrastructure material stock (MS) analysis reveals resource flow and accumulation, providing policymakers with insights for managing resources and planning. This study comprehensively analyzed the MS of infrastructure on Miao Island using a bottom-up approach and multi-source data. Key findings include the following: In 2020, the total in-u...

Analyzing the material metabolism of infrastructure provides insights into resource flow and accumulation, offering policymakers new perspectives on resource management and planning. This study comprehensively analyzed the material stock (MS) of infrastructure on Miao Island using a bottom-up approach and Pleiades stereo images. Key findings includ...

LiDAR-unmanned aerial system (LiDAR-UAS) technology can accurately and efficiently obtain detailed and accurate three-dimensional spatial information of objects. The classification of objects in estuarine areas is highly important for management, planning, and ecosystem protection. Owing to the presence of slopes in estuarine areas, distinguishing...

Due to the limitations of measurement equipment and the influence of factors such as the environment and target, measurement errors may occur during the data acquisition process of airborne LiDAR bathymetry (ALB). The refractive index of water is defined as the propagation ratio of the speed of light waves in a vacuum to that in water; this ratio i...

Complex terrains in coastal zones and shallow water areas around islands and reefs can be quickly detected via airborne LiDAR bathymetry (ALB) technology. Due to equipment placement deviations and measurement uncertainty, measurement deviations can occur in the overlapping areas of adjacent strips, so it is particularly necessary to register point...

According to the Thailand’s National Strategy (2017-2036) and National Reform Plans, various tools, techniques, or methods are necessary to collect and investigate data for the effective preservation and protection of the country’s natural resources. We aimed to apply various tools and methods for integrated coastal management in Thailand. This stu...

Landscape indexes are quantitative indicators that reflect the composition and spatial configuration of landscape structures. However, the current two-dimensional (2D) spatial analysis methods lack accuracy in assessing patch characteristics due to the lack of three-dimensional (3D) information. Following the “Patch-Class-Landscape” framework, eigh...

Coastal wetlands are a type of unique ecosystem, in which rhizosphere microorganisms of vegetation play a significant role in the overall ecology. Rhizosphere soil samples from the vegetation of Liaohekou Coastal Wetlands, Northeast China (40°54′44″ N, 121°47′51″ E), were collected in seven habitats (Suaeda and Phragmites community in different cov...

Marine spatial planning (MSP) is adopted as an effective marine resource management tool worldwide to balance the growing development needs and marine conservation. However, the launch of MSP in some countries is still in its infancy due to lack of capacity to compile MSP, such as insufficient financial support, ineffective marine governance system...

A comprehensive evaluation system and model of Coastal Wetland Ecological Vulnerability (CWEV) was constructed and applied to reveal spatial heterogeneity of the ecological vulnerability of the Yellow River Delta Wetland (YRDW). The results showed that the score of the ecological vulnerability (EVS) of the YRDW was 0.49, which was generally at a me...

Light dominates the earth’s climate and ecosystems via photosynthesis, and fine changes of that might cause extensive material and energy alternation. Dim light (typically less than 5 μmol photons m–2 s–1) occurs widely in terrestrial ecosystems, while the frequency, duration, and extent of that are increasing because of climate change and urbaniza...

Island tourism is an important part of marine tourism and has developed into an important part of international tourism consumption. The island tourism environment is the foundation for the sustainable development of island tourism. This paper takes Koh Lan as the research area to conduct a questionnaire survey among international tourists to under...

The urban building environment has dramatically transited into a high-rise style. Consequently, street canyons have changed the daytime solar radiation distribution and indirectly affected the photosynthesis of the surrounding ecosystems. Because of the interdisciplinary nature of the topic, quantitative studies are rare. In this study, a new appro...

The advancement of the Marine renewable energy (MRE) industry will contribute to actualizing sustainable development in China. However, the Chinese MRE industry is still in its nascent stage. Therefore, effective policies are needed to improve the development of this emerging sector and facilitate its maturation. Focusing on MRE policies, this arti...

Glass is one of the materials most extensively used for packaging. Its manufacturing process is typically energy intensive, with a large quantity of CO2 emissions. In this study, the material and energy consumptioninventory of the manufacturing stage were quantified and CO2 emissions from the glass manufacturing process were calculated. When fuel o...

Archipelagos are always the key nodes of bird migration routes, but they exhibit ecological vulnerability and heterogeneity due to their unique natural conditions and various human disturbances. An evaluation of archipelago bird habitat suitability that focuses on archipelago features is essential for island ecosystem conservation under human distu...

The intensive activities of urban infrastructure construction lead to a considerable amount of materials flowing into cities. With these processes of material metabolism, a huge level of energy consumption occurs throughout the lifecycle. Identifying the metabolism processes enables decision makers to better understand the causes of resource and en...

The accelerated construction of general infrastructure with global urbanization necessitates the massive input of materials. The huge material input and waste output throughout the infrastructure's lifecycle have led to severe resource depletion and the accumulation of potential environmental risks. The systematic evaluation of typical infrastructu...

An evaluation model of island ecosystem carrying capacity which can reflect the dual characteristics of land and surrounding waters and their spatial heterogeneities was established, and southern Miaodao Archipelago was used as the study area. The island ecosystem was in status of mild overloading as a whole, with land sub-ecosystem in status of mi...

In this study, Beichangshan Island in Changdao County of Shandong Province was used as the research area. On the basis of field investigation, the methods of mathematic model and 3S technology were adopted. The plantation biomass was classified as total biomass (TB), existent biomass (EB), and lost biomass (LB), which represents the biomasses of al...

The extraction of water distributions is highly useful for research and planning activities, including those associated with water resources, environments, disasters, local climates, and other factors. Remote sensing images with moderate resolution have been the main data source due to the vast distribution of water and the high cost, access diffic...

Impervious surfaces and greenspaces have significant impacts on ecological processes and ecosystem services in urban areas. However, there have been no systematic studies of how the interaction between the two forms of land cover, and especially their edge effects, influence ecosystem properties. This has made it difficult to evaluate the effective...

To study the water quality influenced by the anthropogenic activities and its impact on the phytoplankton diversity in the surface waters of Miaodao Archipelago, the spatiotemporal variations in phytoplankton communities and the environmental properties of the surface waters surrounding the Five Southern Islands of Miaodao Archipelago were investig...

Research on carrying capacity, aiming at maintaining the limited ability of the Earth’s life supporting system to sustain human development, requires a comprehensive and ecosystem-based approach to monitor and assess the localized sustainability of coupled social and ecological systems. A definition termed the ecosystem-based carrying capacity of i...

Based on an ENVI-met three-dimensional microclimate model, a numerical simulation model in a typical residential area of Beijing under the actual situation and roof greening conditions was established and microclimate characteristics were simulated. The results show that the simulated value is similar to the observed one after multiple parameter ca...

As one of the primary raw materials in the construction industry, cement production consumes a great deal of resources and has various environmental effects. During the production phase in particular, different procedures play a decisive role in determining the input and output. China has become both the largest producer and the largest consumer of...

Rapid urbanization has greatly altered the urban metabolism of material and energy. As a significant part of the infrastructure, urban roads are being rapidly developed worldwide. Quantitative analysis of metabolic processes on urban road systems, especially the scale, composition and spatial distribution of their stocks, could help to assess the r...

The concept of sustainability involves factors related to society, economy, and ecology. The modern context of sustainability also includes a requirement for equitable consumption of materials and energy to sustain the quality of life while still protecting the environment. To evaluate the environmental sustainability of socioeconomic activities, e...

To support a sustainable combined ecological and economic system, the flows and quantities of emergy must be in balance; that is, a net surplus of emergy must flow into the system to account for the fact that socioeconomic systems are rarely self-sustaining. When this flow is not available, the system will degrade. Although emergy synthesis is a be...

Urban building system assumes significant environmental and ecological implications in terms of a contribution of emissions of CO2 and other greenhouse gases. In order to understand the roles of urban building system in the global and regional climate changes, we set up an integrated model to analyze the carbon emissions of urban building system du...