Results 41 to 50 of about 87,132 (213)

Resolving the biome debate: ecological and palaeo‐data concur that the extensive tree‐limited grassy biomes of central and north‐western Madagascar are largely anthropogenic

Biological Reviews, EarlyView.
ABSTRACT For millennia, human activities have transformed ecosystems globally. Determining which landscapes are predominantly anthropogenic is crucial to conservation and habitat restoration. Madagascar, a critically‐threatened biodiversity hotspot, is a prominent example.
Grant S. Joseph, Sean Hixon, Colleen L. Seymour, Laurie R. Godfrey, Miguel Pedrono, Karen E. Samonds, Andrinajoro R. Rakotoarivelo, Brooke E. Crowley   +7 more
wiley   +1 more source

Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas

Deep Underground Science and Engineering, EarlyView.
This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou, Xueqiu He, Zhenlei Li, Ping Wang, Dazhao Song, Fuxing Jiang, Shan Yin, Anliang Lü, Menghan Wei, Taoping Zhong   +9 more
wiley   +1 more source

Energy System for Wearables

Interdisciplinary Materials, EarlyView.
This review systematically summarizes wearable energy systems, including energy demand, key technical challenges, multi‐channel energy harvesting, flexible energy storage and system integration. We discussed multi‐source hybrid energy harvesting and intelligent energy management in detail, emphasizing their roles in system performance and application ...
Yanjiao Teng, Qing He, Xiaofan Chen, Ting Zhu, Shun Wang, Xiaoming Xu, Jianwei Li, Changyuan Guo, Xuanpeng Wang, Seeram Ramakrishna   +9 more
wiley   +1 more source

AnnAGNPS ephemeral gully erosion simulation technology [PDF]

, 2007
Resumen del trabajo presentado al IV International Symposium on Gully Erosion, celebrado en la Universidad Pública de Navarra del 17 al 19 de septiembre de 2007.Tillage-induced ephemeral gully erosion has been shown to be a significant and sometimes ...
Parker, C., Theurer, F.D., Bingner, R.L., Alonso, C.V., Gordon, L.M., Thorne, C., Bennett, S.J.   +6 more
core  

Topographical thresholds for ephemeral gully initiation in intensively cultivated areas of the Mediterranean [PDF]

, 1998
Ephemeral gullying is an important erosion process in Mediterranean areas suffering from land degradation because of increased drought and human impact. An ephemeral gully is formed when a hydraulic threshold for incision into a resistant soil surface is
Oostwoud-Wijdenes, D., Figueiredo, Tomás de, Vandekerckhove, L., J Poesen, de Figueiredo, T., L Vandekerckhove, T de Figueiredo, Poesen, Jean, Vandekerckhove, Liesbeth, D Oostwoud Wijdenes, Oostwoud Wijdenes, Dirk   +10 more
core   +2 more sources

Modeling of driving factors and headcut rates of ephemeral gullies in the loess plateau of China using high-resolution remote sensing images

International Journal of Digital Earth
Ephemeral gully headcut erosion contributes significantly to global land degradation and increased sediment yields, but the underlying driving factors and prediction models remain poorly understood.
Boyang Liu, Ziyu Chen, Bin Li, Shufang Wu, Hao Feng, Xiaodong Gao, Kadambot H. M. Siddique   +6 more
doaj   +1 more source

Cross-section characteristics and hydraulic geometry of different erosion gullies on slopes

Shui kexue jinzhan, 2016
Gully erosion is one important cause of soil and water loss on slopes,and research on gully morphology is very necessary for understanding principles governing gully erosion and estimating sediment transport.
ZHAO Chunhong, GAO Jian'en
doaj   +1 more source

Assessment of land use impact on hydraulic threshold conditions for gully head cut initiation [PDF]

Hydrology and Earth System Sciences, 2016
A gully as an accelerated erosion process is responsible for land degradation under various environmental conditions and has been known as a threshold phenomenon.
A. N. Samani, Q. Chen, S. Khalighi, R. J. Wasson, M. R. Rahdari   +4 more
doaj   +1 more source

Global Research Progress Regarding Gully Erosion from 1991 to 2020

Shuitu baochi tongbao, 2023
[Objective] The international research situation, current research status, and trends in research hotspots in the field of gully erosion at home and abroad from 1991 to 2020 were analyzed, and the development trends of gully erosion measurement ...
Luo Li, Duan Shengdan, Guo Wenzhao, Liu Heng, Sun Haoze, Yang Shuo   +5 more
doaj   +1 more source

Dental enamel hypoplasia and intra‐tooth isotope records as indicators of physiological stress and environmental variability in Early Pleistocene hippopotamids from Melka Kunture (Upper Awash, Ethiopia)

Journal of Quaternary Science, EarlyView.
ABSTRACT Enamel hypoplasia results from temporary disruptions of enamel deposition during tooth development. It is widely used as an indicator of physiological stress in archeological and paleontological contexts; yet, its relationship with environmental conditions during tooth formation remains poorly constrained.
Giuseppe Briatico, Denis Geraads, Rita T. Melis, Margherita Mussi   +3 more
wiley   +1 more source