Results 31 to 40 of about 4,530 (76)

SDG- and GMAG-oriented analysis of multi scenarios spatiotemporal changes and evaluation of the effectiveness and potential of mangrove forests

International Journal of Digital Earth
It is crucial to mangrove management by understanding its conservation efforts. This study proposed a spatiotemporal analysis model to evaluate mangrove changes in the Guangxi Beibu Gulf (GBG) and the Guangdong-Hong Kong-Macao Greater Bay Area (GBA ...
Ziyan Ling, Weiguo Jiang, Kaifeng Peng, Ze Zhang, Zhifeng Wu, Shiquan Zhong, Aiping Chu, Zhijie Xiao, Ziyu Sun   +8 more
doaj   +1 more source

MSCANet: multiscale context information aggregation network for Tibetan Plateau lake extraction from remote sensing images

International Journal of Digital Earth, 2023
Qinghai-Tibet Plateau lakes are important carriers of water resources in the ‘Asian’s Water Tower’, and it is of great significance to grasp the spatial distribution of plateau lakes for the climate, ecological environment, and regional water cycle ...
Zhihui Tian, Xiaoyu Guo, Xiaohui He, Panle Li, Xijie Cheng, Guangsheng Zhou   +5 more
doaj   +1 more source

A new extraction and grading method for underwater topographic photons of photon-counting LiDAR with different observation conditions

International Journal of Digital Earth
Spaceborne photon-counting light detection and ranging (LiDAR) have been extensively applied in shallow-water bathymetry. The density of underwater topographic photons (UTP) varies and is discontinuous due to sunlight noise, beam intensity, and seabed ...
Zhen Wen, Xinming Tang, Bo Ai, Fanlin Yang, Guoyuan Li, Fan Mo, Xiao Zhang, Jiaqi Yao   +7 more
doaj   +1 more source

Synthesis of the ICESat/ICESat-2 and CryoSat-2 observations to reconstruct time series of lake level

International Journal of Digital Earth, 2023
Synthesis of multi-satellite altimetry facilitates the acquisition of long-term changes in lake level but may induce biases due to inconsistent data sources, and thus remains largely unexplored.
Ye Feng, Leiku Yang, Pengfei Zhan, Shuangxiao Luo, Tan Chen, Kai Liu, Chunqiao Song   +6 more
doaj   +1 more source

Mapping China’s coastal aquaculture ponds expansion with sentinel-2 images during 2017–2021

International Journal of Digital Earth
Accurately mapping large-scale areas of aquaculture ponds along China’s coastal areas is challenging. This study proposes a multi-featured decision tree method that incorporates multi-spectral indices, water inundation frequency (WIF), and object ...
Weiwei Sun, Tingting Hou, Chao Chen, Gang Yang, Binjie Chen, Xiangchao Meng, Kai Ren   +6 more
doaj   +1 more source

Identifying urban functional zones by capturing multi-spatial distribution patterns of points of interest

International Journal of Digital Earth, 2022
Urban Functional Zone (UFZ) identification is vital for urban planning, renewal, and development. Point of Interest (POI), as one of the most popular data in UFZ studies, is transformed into a geo-corpus under specific sampling strategies, which can be ...
Quan Qin, Shishuo Xu, Mingyi Du, Songnian Li   +3 more
doaj   +1 more source

Measuring the similarity between shapes of buildings using graph edit distance

International Journal of Digital Earth
Building data play a crucial role in geographic information science, and building shape similarity can be used for spatial inquiry, cartographic generalization, map updating, data quality assessment, and other spatial data mining applications.
Xiechun Lu, Houpu Li, Yongyang Xu, Jiangwen Liu, Zhanlong Chen   +4 more
doaj   +1 more source

Integrating Sentinel-1 and 2 with LiDAR data to estimate aboveground biomass of subtropical forests in northeast Guangdong, China

International Journal of Digital Earth, 2023
Accurate monitoring of forest aboveground biomass (AGB) is vital for sustainable forest management. Generally, the AGB is estimated by combining satellite images and field measurements.
Linjing Zhang, Xiaoxue Zhang, Zhenfeng Shao, Wenhao Jiang, Huimin Gao   +4 more
doaj   +1 more source

How sustainable is OpenStreetMap? Tracking individual trajectories of editing behavior

International Journal of Digital Earth
OpenStreetMap (OSM) has been playing increasingly important roles in location-based services, urban planning, tourism, and disaster management. In this paper, we examine a fundamental issue: can OSM reliably provide its services in the long run?
Xiang Zhang, Jiayan An, Yuchuan Zhou, Min Yang, Xi Zhao   +4 more
doaj   +1 more source

Virtual earth cloud: a multi-cloud framework for enabling geosciences digital ecosystems

International Journal of Digital Earth, 2023
Humankind is facing unprecedented global environmental and social challenges in terms of food, water and energy security, resilience to natural hazards, etc.
Mattia Santoro, Paolo Mazzetti, Stefano Nativi   +2 more
doaj   +1 more source