Results 31 to 40 of about 274,835 (294)

Study on the Eco-Environmental Index and Its Application: A Case Study of the Surablak Coal Fire Area, Xinjiang, China

Fire
Coal fires are disasters that occur when underground coal seams are subjected to combustion conditions induced by natural or human factors. This study attempts to investigate the impact of coal fires on the surrounding environment by assessing the eco ...
Jie Gao, Qiang Zeng
doaj   +1 more source

A novel approach to fuel biomass sampling for 3D fuel characterization

MethodsX, 2018
Surface fuels are the critical link between structure and function in frequently burned pine ecosystems, which are found globally (Williamson and Black, 1981; Rebertus et al., 1989; Glitzenstein et al., 1995) [1–3].
Christie M. Hawley, E. Louise Loudermilk, Eric M. Rowell, Scott Pokswinski   +3 more
doaj   +1 more source

Frequent burning promotes invasions of alien plants into a mesic African savanna [PDF]

, 2010
Fire is both inevitable and necessary for maintaining the structure and functioning of mesic savannas. Without disturbances such as fire and herbivory, tree cover can increase at the expense of grass cover and over time dominate mesic savannas ...
Andrew K. Skidmore, AS MacDougall, B Holle Von, BW Wilgen Van, BW Wilgen Van, BW Wilgen Van, BW Wilgen Van, DJ Gibson, DL Barnes, E Edward, F Langevelde Van, F Oudtshoorn Van, GE Gibbs Russell, Herbert H. T. Prins, HF Glen, IM Grundy, JE Keeley, JL Lockwood, JN Barney, JP Grime, K Roques, K Shea, L Henderson, L Valery, M Coates-Palgrave, M Rouget, M Sankaran, Mhosisi Masocha, MJ Crawley, N Govender, P Alpert, P Frost, P Savadogo, PA Furley, PJ Watson, RJ Hobbs, RM Strang, S Lavorel, SI Higgins, SI Higgins, WJ Bond, WJ Bond, WJ Bond, WJ Bond, WP Sousa, Xavier Poshiwa   +45 more
core   +4 more sources

“It Is Much Safer to Be Sparse than Connected”: Safe Control of Robotic Swarm Density Dynamics with PDE Optimization with State Constraints

Advanced Intelligent Systems, EarlyView.
This paper proposes a novel control framework to ensure safety of a robotic swarm. A feedback optimization controller is capable of driving the swarm toward a target density while keeping risk‐zone exposure below a safety threshold. Theory and experiments show how safety is more effectively achieved for sparsely connected swarms.
Longchen Niu, Gennaro Notomista
wiley   +1 more source

Effects of soil amendments on the ecological restoration of coal fire sites: a case study of Wugong coal fire in Xinjiang, China

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Coal fires are major disasters associated with mining that severely damage regional ecosystems. Composite amendments effectively restore coal fire areas ecologically, but their mechanisms for driving the recovery of soil microbial communities remain ...
Li Shen, Qiang Zeng
doaj   +1 more source

Ducks and passerines nesting in northern mixed‐grass prairie treated with fire

Wildlife Society Bulletin, 2011
Prescribed fire is an important, ecology‐driven tool for restoration of grassland systems. However, prescribed fire remains controversial for some grassland managers because of reported reductions in bird use of recently burned grasslands.
Todd A. Grant, Terry L. Shaffer, Elizabeth M. Madden, Gordon B. Berkey   +3 more
doaj   +1 more source

Molecular Tools in Microbial Ecology [PDF]

, 2008
Editors: Laia Diaz and Marta Perez Book Description: The new book presents the latest research on ecology which is the study of the interrelationships between organisms and their environment, including the biotic and abiotic components.
Alexandre, Ana, Laranjo, Marta, Oliveira, Solange   +2 more
core  

Toward an Improved Conceptual Understanding of North American Tree Species Distributions

, 2017
Species distributions have often been assumed to represent climatic limitations, yet recent evidence has challenged these assumptions and emphasized the potential importance of biotic interactions, dispersal limitation, and disturbance.
Copenhaver-Parry, Paige E
core   +1 more source

Ecological niche modeling reveals habitat differentiation and climatic vulnerability in two imperiled, sympatric southern Appalachian carnivorous plants

American Journal of Botany, EarlyView.
Abstract Premise Understanding the habitat requirements of imperiled flora is critical for informing ex situ conservation practices, designing effective reintroduction strategies, and understanding how climate change will impact such species, especially in montane regions with high levels of environmental heterogeneity. In southern Appalachia, USA, the
Nicholas J. Chang, Lauren Eserman, Amanda Carmichael, Adam B. Smith, Xingwen Loy, Emily E. D. Coffey, James Ojascastro   +6 more
wiley   +1 more source

Investigation on Combustion Characteristics and Molecular Structures of Heiyanquan Mining Area, Xinjiang, China

Molecules
In order to comprehend the molecular composition of coal and better understand the process of coal combustion, this study involved the development of a molecular structure model for Heiyanquan coal in Xinjiang, as well as the optimization and annealing ...
Tong Feng, Qiang Zeng
doaj   +1 more source