Article
Biodiversity Conservation
Shuai Jiang, Nan Xu, Zhichao Li, Conghong Huang
Summary: Coastal land reclamation projects have been implemented in China since 2000 to alleviate the shortage of coastal land resources. The total reclaimed area along the coast in China exceeded 5000 square kilometers, with artificial land and aquaculture being the main land use types. There is a positive correlation between economic development and coastal reclamation, and recent national policies have slowed down the progress of reclamation activities.
GLOBAL ECOLOGY AND CONSERVATION
(2021)
Article
Geosciences, Multidisciplinary
Yijing Wu, Jingwei Li, Dan Wang, Ling Li, Wendi Shao, Shiqiang Du
Summary: Understanding the characteristics of urbanization under different flood protection levels is crucial for sustainable development in coastal flood-prone areas. The study found that urban land expansion in Chinese CFAs increased rapidly, particularly in areas with low flood protection levels, highlighting the need to pay special attention to coastal landscape changes to reduce flood risk.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Biodiversity Conservation
Lefeng Qiu, Min Zhang, Bibing Zhou, Yuanzheng Cui, Zhoulu Yu, Tao Liu, Shaohua Wu
Summary: Coastal reclamation is a global land use practice driven by the growing demand for land resources, but it can have adverse ecological impacts despite the economic benefits it brings. A case study on land reclamation in Hangzhou Bay, China, showed that the ecosystem service value loss exceeded economic benefits over the study period. To achieve sustainability in reclamation, three main ways were proposed to strike a win-win situation between gains and losses.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Run Han, Jinming Sha, Xiaomei Li, Shuhui Lai, Zejing Lin, Qixin Lin, Jinliang Wang
Summary: This study used remote sensing data to monitor land development and ecological changes in Gui'an and analyzed the characteristics of land-use change and ecological maintenance mechanisms at different stages. The results showed that Gui'an has a two-stage, rapid-development, rapid-recovery mode, and ecological quality can be maintained and sustainable development achieved through a reasonable land development mode.
Article
Biodiversity Conservation
Yuan Chen, Meixia Lin, Tao Lin, Junmao Zhang, Laurence Jones, Xia Yao, Hongkai Geng, Yuqin Liu, Guoqin Zhang, Xin Cao, Hong Ye, Yulin Zhan
Summary: Vegetation phenology changes caused by urbanization could lead to shifts in ecosystem services in urban areas and impact on human health. The characteristics of urbanization affect vegetation phenology need to be emphasized, especially in China with a complex natural environment and rapid urbanization background. In this study, we used remote sensing-based phenological data (MODIS MCD12Q2) to analyze the spatial heterogeneity of vegetation phenology caused by urbanization between urban and non-urban areas in 320 cities across China. We found a significant difference between vegetation phenology in urban and its corresponding non-urban area at national and the regional scale.
ECOLOGICAL INDICATORS
(2023)
Article
Environmental Sciences
Tangao Hu, Jinjin Fan, Hao Hou, Yao Li, Yue Li, Kangning Huang
Summary: The study found a significant decrease in area near the Qiantang River coastline (212.21 to 80.99 km(2)) and an increase in constructed land area (10.05 to 120.89 km(2)) from 1973 to 2018. The development modes of inland and reclaimed areas differed significantly, with 2008 marking an important turning point in urbanization in the study area.
LAND DEGRADATION & DEVELOPMENT
(2021)
Article
Environmental Sciences
Yu Gu, Yangbo Chen, Huaizhang Sun, Jun Liu
Summary: This study examines the impact of urbanization on flooding in the highly urbanized Chebei Creek watershed in the Pearl River Delta, southern China. The study finds that urbanization leads to short duration flood peaks and steep rises and falls in flood water levels. Previous research on urbanized watersheds has mainly focused on quantitative simulation of runoff and flood flows, with limited studies on real-time flood forecasting. To achieve real-time flood forecasting in urbanized watersheds, refined underlying surface data based on remote sensing technology is necessary.
Article
Environmental Sciences
Dhritiraj Sengupta, Young Rae Choi, Bo Tian, Sally Brown, Michael Meadows, Christopher R. Hackney, Abhishek Banerjee, Yingjie Li, Ruishan Chen, Yunxuan Zhou
Summary: Increasing population size and economic dependence on the coastal zone have driven land reclamation for urban development and infrastructure purposes. A global assessment of coastal reclamation reveals that 78% of major coastal cities have resorted to reclamation, contributing a significant amount of additional land. Reclamation is most prominent in East Asia, the Middle East, and Southeast Asia, followed by Western Europe and West Africa. The most common land uses on reclaimed spaces are port extension, residential/commercial, and industrial. Additionally, recent reclamation has occurred in areas susceptible to extreme sea level rise, posing challenges to sustainable development.
Article
Environmental Sciences
Bing Fu, Chang Fang, Jun Xia, Sentao Pan, Lei Zhou, Yisheng Peng, Yumeng Yan, Yan Yang, Yinglin He, Shijun Chen, Huirong Yang, Jun Wang
Summary: This study aimed to explore the effects of urbanization on soil bacterial communities in coastal cities and found that Proteobacteria and Acidobacteria were the main phyla. The degree of urbanization was found to be an important factor affecting the soil bacterial communities in a non-linear pattern. Additionally, the bacterial communities in urbanized coastal city soils shared similar metabolic potential. This study improved our understanding of the response of soil bacterial communities to urbanization in subtropical coastal cities and provided a useful strategy for monitoring the ecological risks of soil under urbanization.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Oceanography
Nan Wang, Gaoru Zhu, Xinyang Li, Jinxiang Cheng, Wenbin Yi, Shengqiang Liu, Zhenglei Xie
Summary: China has the largest extent of reclamation in the world, which has been utilized for ports, industries, and urban expansion since 2000. Ports are crucial for land-sea coordination and regional development, making the study of port reclamation patterns and environmental strategies essential for coastal zone sustainable development. However, there are challenges such as the need for stricter reclamation policies, ecological demands, and imbalanced spatial-temporal distribution of reclamation activities. Further research in land reclamation is important for regulating port reclamation activities and promoting sustainable development.
OCEAN & COASTAL MANAGEMENT
(2023)
Article
Environmental Studies
Nan Xu, Yuqing Wang, Conghong Huang, Shuai Jiang, Mingming Jia, Yue Ma
Summary: In recent years, large-scale coastal reclamation projects have been conducted along the Jiangsu coast, dramatically altering the local environment and ecosystem. Through remote sensing monitoring, the total area of coastal reclamation in Jiangsu since 1984 has reached 16.61 x 10(4) hm(2), with a significant increase in the rate of reclamation activities.
Article
Environmental Sciences
Wenqiang Zhang, Dianwei Zhang, Songjie Han, Chao Zhang, Baoqing Shan
Summary: The water quality in China's coastal areas has gradually improved since 2001. The Yellow Sea has the best water quality among the four sea areas, while the East China Sea has poor water quality. There are variations in water quality among different coastal provinces and cities, with good water quality in Hainan, Guangxi, Shandong, and other provinces and cities, but poor water quality in Shanghai, Zhejiang, and Tianjin. Terrestrial anthropogenic pollutants are the main factors influencing water quality in coastal areas. The continuous improvement of water quality in coastal areas lays a foundation for the health of blue carbon ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Marine
Tanxin Feng, Nan Xu
Summary: Coastal reclamation can promote economic development in coastal cities and improve human well-being, but also lead to ecological and environmental issues. Recent coastal reclamation in Shenzhen and Hong Kong exhibits different trends, emphasizing the importance of continuous monitoring for sustainable coastal development.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Biotechnology & Applied Microbiology
Yongxin Lin, Kam W. Tang, Guiping Ye, Ping Yang, Hang-Wei Hu, Chuan Tong, Yong Zheng, Mengmeng Feng, Milin Deng, Zi-Yang He, Ji-Zheng He
Summary: This study examined the impact of habitat modifications on comammox Nitrospira communities in coastal wetland sediments in southeastern China. The results showed that sediment grain size and sulfate concentration were important factors influencing the abundance and diversity of comammox Nitrospira. The response of comammox Nitrospira community to habitat change varied by location, and dispersal limitation played a significant role in the community assembly process in coastal wetland sediments.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Environmental Sciences
Jian Li, Zhanrui Leng, Taitiya Kenneth Yuguda, Lili Wei, Jiaojiao Xia, Chongyu Zhuo, Ziying Nie, Daolin Du
Summary: Coastal reclamation is a common trend worldwide due to increasing land demand, but it poses ecological threats to coastal wetlands. This study examines the trade-offs between economic benefits and ecological degradation of invasive alien plants and seawall coastal reclamation in China. The findings show significant decline of ecosystem service value (ESV) loss from S. alterniflora reclamation, while seawalls reclamation yielded some ESV gain. However, the cumulative ESV loss outweighed the economic gains, indicating a potential long-term threat to the ecological integrity and carbon sinks in coastal wetlands.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Wenting Wu, Zhaoqing Yang, Chunpeng Chen, Bo Tian
Summary: The study found that ecological engineering projects have significant impacts on the geomorphological changes of coastal wetlands, and the use of remote sensing data can improve the quality of numerical models. However, EEP may increase the vulnerability of coastal wetland ecosystems to global climate change. Further research is needed to evaluate the advantages and disadvantages of EEP and identify a more sustainable approach for coastal management.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Hong Jiang, Maolin Yao, Jia Guo, Zhaoming Zhang, Wenting Wu, Zhengyuan Mao
Summary: It is significant to study the vegetation of protected areas in rugged mountains where the vegetation grows naturally with minimal eco-society environmental stress from anthropogenic activities. The shadow-eliminated vegetation index (SEVI) was used to monitor the vegetation of protected areas. The BIE-algorithm was developed to automatically achieve the best adjustment factor for SEVI calculation and showed promising results in eliminating topographic effects and evaluating vegetation growth levels.
Article
Geography, Physical
Chunpeng Chen, Ce Zhang, Christian Schwarz, Bo Tian, Wenhao Jiang, Wenting Wu, Rahul Garg, Pradeep Garg, Chusov Aleksandr, Shilin Mikhail, Yunxuan Zhou
Summary: By using UAV-based SfM photogrammetry and other methods, we are able to accurately quantify the three-dimensional morphological features of tidal channels and relate them to salt marsh species distribution. Our results show that the morphology of tidal channels has a significant impact on the distribution of salt marsh plants, with variations among different plant species.
Article
Environmental Sciences
Wenting Wu, Chao Zhi, Yiwei Gao, Chunpeng Chen, Zuoqi Chen, Hua Su, Wenfang Lu, Bo Tian
Summary: This study mapped the detailed status and trends of coastal wetlands in Fujian Province from 1994 to 2018 using Landsat images, revealing unprecedented losses mainly due to reclamation for aquaculture ponds, construction, and other purposes, resulting in a significant loss of coastal spaces. The interaction between the loss of coastal wetlands and seaward urbanization will lead to severe fragmentation and squeezing effects in the coastal zone, weakening the coastal protection from marine disasters provided by coastal wetlands.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Oceanography
Wenfang Lu, Jian Wang, Yuwu Jiang, Zhaozhang Chen, Wenting Wu, Liyang Yang, Yong Liu
Summary: This study introduces a novel data-driven framework to study the Minjiang River Plume (MJRP). By combining Self-Organizing Map (SOM) clustering with a Hidden Markov Model (HMM), the study identifies six major patterns of MJRP using modeled sea surface salinity (SSS) data. The SOM-HMM method is then applied to predict future patterns of MJRP based on observable states, with high prediction accuracy and computational efficiency. This approach shows promising potential for short-term marine forecast and estuary management.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Environmental Sciences
Hua Su, Susu Wei, Junlong Qiu, Wenting Wu
Summary: The rapid development of marine ranching provides a new approach to combat the global food crisis. However, the expansion of coastal aquaculture has led to environmental problems. This study proposes a deep learning-based approach called RaftNet to accurately extract coastal raft aquaculture. The results show that RaftNet achieves the best accuracy compared to other methods.
Article
Geography, Physical
Wenting Wu, Chao Zhi, Chunpeng Chen, Bo Tian, Zuoqi Chen, Hua Su
Summary: The study demonstrates that although intertidal vegetation continues to increase due to natural development after the establishment of natural reserves, areas of intertidal vegetation are reclaimed for anthropogenic uses at a considerable rate. The study also shows that FLTS has capacities in monitoring the dynamics in coastal zones.
GISCIENCE & REMOTE SENSING
(2022)
Article
Geography
Zuoqi Chen, Siyi Yu, Xiaojun You, Chengshu Yang, Congxiao Wang, Juan Lin, Wenting Wu, Bailang Yu
Summary: The urban-rural difference in economy is crucial for urban sustainability and socio-economic development, especially in the context of rapid urbanization in China. By introducing novel nighttime light landscape metrics, we can understand and analyze the economic development and differences between urban and rural areas from multiple perspectives. Empirical results from Fujian province demonstrate a decoupling between economic volume and space in urban areas, indicating high-quality urbanization. Rapid rural economic development is driven by rural construction and structural transformation, leading to coastal vs. inland urban-rural economic differentiation. The nighttime light landscape metrics are valuable indicators for analyzing economy distribution and evolution, and can be further enriched to reveal more information in economic development and other fields.
Article
Geography, Physical
Chunpeng Chen, Ce Zhang, Bo Tian, Wenting Wu, Yunxuan Zhou
Summary: Intertidal zones are critical for coastal communities and provide diverse habitats and buffers against marine hazards. However, they are facing widespread loss due to reduced sediment, sea level rise, and coastal reclamation. To address this, a pixel-based approach called Tide2Topo is proposed, which uses Sentinel-2 satellite data to construct intertidal topography and overcome the limitations of existing methods.
ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
(2023)
Article
Environmental Sciences
Chunpeng Chen, Bo Tian, Wenting Wu, Yuanqiang Duan, Yunxuan Zhou, Ce Zhang
Summary: The rapid, up-to-date, cost-effective acquisition and tracking of intertidal topography are essential for timely and high-priority protection and restoration of the intertidal zone. RTK-assisted UAV photogrammetry can obtain high-accuracy topographic data without ground control points. Flight altitude has a significant and nonlinear effect on topographic accuracy, and UAV photogrammetry overestimates elevation in low-lying water-bearing regions. The integration of UAV and satellite observations can increase the accuracy of satellite-based waterline methods.
Article
Environmental Sciences
Dhritiraj Sengupta, Young Rae Choi, Bo Tian, Sally Brown, Michael Meadows, Christopher R. Hackney, Abhishek Banerjee, Yingjie Li, Ruishan Chen, Yunxuan Zhou
Summary: Increasing population size and economic dependence on the coastal zone have driven land reclamation for urban development and infrastructure purposes. A global assessment of coastal reclamation reveals that 78% of major coastal cities have resorted to reclamation, contributing a significant amount of additional land. Reclamation is most prominent in East Asia, the Middle East, and Southeast Asia, followed by Western Europe and West Africa. The most common land uses on reclaimed spaces are port extension, residential/commercial, and industrial. Additionally, recent reclamation has occurred in areas susceptible to extreme sea level rise, posing challenges to sustainable development.
Article
Remote Sensing
Wenhao Jiang, Bo Tian, Yuanqiang Duan, Chunpeng Chen, Yuekai Hu
Summary: This study uses a random forest classification method with information on morphology, optics, and SAR to address cloud pollution in obtaining geospatial data of photovoltaic systems. The results show that the total PV area in Chinese coastal provinces reached 837.3 km(2) by October 2022, with water-based PV representing 33.7% and being distributed near the shoreline. The PV density in the north, bounded by the Huai River, is more than twice that in the south, and the distribution of PV is slightly mismatched with solar resource and power demand, especially in Liaoning and Guangdong.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2023)
Proceedings Paper
Geosciences, Multidisciplinary
Chunpeng Chen, Ce Zhang, Wenting Wu, Wenhao Jiang, Bo Tian, Yunxuan Zhou
Summary: This study evaluated the potential of RTK-assisted UAVs in quantifying intertidal topographic changes. The results showed that RTK-assisted UAV photogrammetry without ground control points could accurately capture fine-scale topographical features, with high precision.
2022 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2022)
(2022)
Proceedings Paper
Geography, Physical
Chunpeng Chen, Ce Zhang, Bo Tian, Yunxuan Zhou
Summary: Asian deltas are important regions with significant social, economic, ecological and environmental importance, but many of them are rapidly sinking and shrinking, threatening the survival of millions of people. This study tracked the morphological changes of 11 major Asian deltas from 1986 to 2018 and found that the Yangtze River Delta has been advancing seaward, while other deltas have been eroded. These changes are closely related to sediment supplies and management policies.
XXIV ISPRS CONGRESS: IMAGING TODAY, FORESEEING TOMORROW, COMMISSION III
(2022)
