Results 81 to 90 of about 20,988 (296)

Large‐scale characterization of horizontal forest structure from remote sensing optical images

Remote Sensing in Ecology and Conservation, EarlyView.
Sub‐meter resolution remote sensing data and tree crown segmentation techniques hold promise in offering detailed information that can support the characterization of forest structure from a horizontal perspective, offering new insights in the tree crown structure at scale.
Xin Xu, Martin Brandt, Xiaowei Tong, Maurice Mugabowindekwe, Yuemin Yue, Sizhuo Li, Qiue Xu, Siyu Liu, Florian Reiner, Kelin Wang, Zhengchao Chen, Yongqing Bai, Rasmus Fensholt   +12 more
wiley   +1 more source

Classification of tree species and standing dead trees in Boreal forests using UAV‐based RGB, multispectral, and LiDAR point clouds

Remote Sensing in Ecology and Conservation, EarlyView.
We evaluated single‐ and multi‐sensor UAV approaches for classifying tree species and standing dead trees in boreal forests, focusing on key biodiversity indicators such as European aspen. Using spectral and structural features extracted from RGB, multispectral (MSP), and LiDAR point clouds for 1,205 field‐measured trees, we compared classification ...
Anton Kuzmin, Lauri Korhonen, Topi Tanhuanpää, Mikko Kukkonen, Matti Maltamo, Timo Kumpula   +5 more
wiley   +1 more source

GYPSUM KARST IN THE OLVERA AREA (CADIZ PROVINCE, ANDALUSIA, SPAIN)

, 2009
In the Olvera area (Cádiz Province, Andalusia, Spain) different karstic lithologies (preferentially carbonates and gypsum) are recognizable, relating to rainfall values of the zone and producing a karst complex of a certain interest.
F. J. Gracia Prieto, SUMA, Andrea, DE COSMO, Pietro Domenico   +2 more
core  

Multi‐objective optimization of reservoir refill operate considering energy storage and hydrological conditions

River, EarlyView.
Abstract Optimizing reservoir refill operation rules is crucial for enhancing reservoir sustainability and resilience. This study proposes a refill operation model designed to derive optimal refill guide curves by considering flood risk prevention, maximum storage levels, and the combined benefits of hydropower generation and energy storage.
Lihua Chen, Kaipeng Yang, Yunyao Chen, Xiaoli Zhang, Xuefang Li   +4 more
wiley   +1 more source

Identification and genetic mechanism of recharge sources in groundwater-rich area of Changxiao karst water system in Jinan City

地质科技通报
Objective and methods In this study, the hydrochemical method and self-organized neural network (SOM-KM) coupling method were employed to identify recharge sources and reveal the water-rich mechanism in the karst groundwater-rich area of the Changxiao ...
Yi LIU, Fengxin KANG, Wenqiang ZHANG, Qingyu XU, Peng QIN, Qiang ZHAO, Jialong LI, Yang CUI, Haibo SUI, Tingting ZHENG   +9 more
doaj   +1 more source

Individual Variation in Overwintering Strategies of the Great Evening Bat (Ia io) in Subtropical China 中国亚热带地区大足蝠 (Ia io) 越冬策略的个体差异

Wildlife Letters, EarlyView.
Tracking with GPS and accelerometers shows that great evening bats in subtropical China use two overwintering strategies: some remain in continuous hibernation, while others switch between torpor and activity as temperatures change. This behavioral flexibility, shaped by climate, underscores the importance of protecting diverse roosting habitats for ...
Zhiqiang Wang, Lixin Gong, Man Si, Zhenglanyi Huang, Yushi Pan, Hui Wu, Jiang Feng, Tinglei Jiang   +7 more
wiley   +1 more source

Investigations of rapid groundwater flow and karst in the Chalk

, 2009
This study, with fieldwork undertaken in the Pang and Lambourn catchments in Southern England, investigates the occurrence and distribution of rapid groundwater flow in the Chalk and evaluates the degree of karstification.
Maurice, L.
core  

Land use overrides climatic controls on soil organic nitrogen transformations: Contrasting responsiveness between forest and cropland ecosystems

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Soil organic nitrogen (SON) transformation is critical for global nutrient cycling and ecosystem productivity, yet how its responsiveness to climate change differs across diverse land use types remains poorly resolved.
Xinyi Yang, Pengpeng Duan, Andrew T. Nottingham, Wolfgang Wanek, Lettice C. Hicks, Luiz A. Domeignoz‐Horta, Peilei Hu, Kongcao Xiao, Xunyang He, Kelin Wang, Dejun Li   +10 more
wiley   +1 more source

Subsurface flow aggravates the soil erosion on steep slopes in karst post-mining areas

Journal of Hydrology: Regional Studies
On karst steep slopes, subsurface flow frequently emerges at the rock-soil interface, thereby exacerbating soil erosion. However, there have been few studies that quantitatively assess the impact of subsurface flow on soil erosion in this region.
Liman Ao, Yaoqin Wu, Qinxue Xu, Guangling Huang, Jinde Zheng, Junfeng Dai, Zhiyong Fu, Hongsong Chen   +7 more
doaj   +1 more source

Geomorphological aspects of gypsum karst areas with special emphasis on exposed karst

International Journal of Speleology, 1996
Medium- to large-size forms in gypsum karst are described, including dolines, blind valleys, ploje-like depressions, collapses and positive and/or residual forms such as outliers, cone-like hills, dome-like hills, mesa-like tabular blocks and plateaux and breccia pipe hills.
openaire   +4 more sources