Results 21 to 30 of about 2,062,774 (354)

Over the hills and further away from coast: global geospatial patterns of human and environment over the 20th–21st centuries

Environmental Research Letters, 2016
Proximity to the coast and elevation are important geographical considerations for human settlement. Little is known, however, about how spatial variation in these factors exactly relates to human settlements and activities, and how this has developed ...
Matti Kummu, Hans de Moel, Gianluigi Salvucci, Daniel Viviroli, Philip J Ward, Olli Varis   +5 more
doaj   +1 more source

Efficiency Evaluation of Dong Model for Determination of Fire Risk Potential in Zarrin Abad Forests [PDF]

تحقیقات جنگل و صنوبر ایران, 2013
Continues occurrence of fire in northern forests of Iran during past years, necessitates conducting research, in order to predict future fire occurrence in these forests. For this reason a 1:25000 topographical map of Zarrin Abad Forests of Neka Township
Saeideh Eskandari, Jafar Oladi Ghadikolaei, Hamid Jalilvand   +2 more
doaj   +1 more source

Quantifying Lidar Elevation Accuracy: Parameterization and Wavelength Selection for Optimal Ground Classifications Based on Time since Fire/Disturbance

Remote Sensing, 2022
Pre- and post-fire airborne lidar data provide an opportunity to determine peat combustion/loss across broad spatial extents. However, lidar measurements of ground surface elevation are prone to uncertainties.
Kailyn Nelson, Laura Chasmer, Chris Hopkinson   +2 more
doaj   +1 more source

Distributional and species richness patterns of the stoneflies (Insecta, Plecoptera) in New York State [PDF]

Biodiversity Data Journal
There is a 187-year history of stonefly (Insecta, Plecoptera) research in New York State. In total, 29 current valid species have a type locality in this state.
Luke Myers, Boris Kondratieff, Scott Grubbs, Lindsey Pett, R. Edward DeWalt, Timothy Mihuc, Lily Hart   +6 more
doaj   +3 more sources

The Impact and Determinants of Mountainous Topographical Factors on Soil Microbial Community Characteristics

Microorganisms, 2023
Soil bacterial and fungal community communities play significant ecological functions in mountain ecosystems. However, it is not clear how topographic factors and soil physicochemical properties influence changes in microbial community structure and ...
Jiantao Yu, Suyan Li, Xiangyang Sun, Wenzhi Zhou, Libing He, Guanyu Zhao, Zhe Chen, Xueting Bai, Jinshuo Zhang   +8 more
doaj   +1 more source

Impacts of terrain on land surface phenology derived from Harmonized Landsat 8 and Sentinel-2 in the Tianshan Mountains, China

GIScience & Remote Sensing, 2023
Knowledge of terrain impacts on land surface phenology (LSP) is crucial for understanding the responses of mountainous ecosystems to environmental changes.
Chao Ding, Yao Li, Qiaoyun Xie, Hao Li, Bingwei Zhang   +4 more
doaj   +1 more source

Preliminary Results on 3D Channel Modeling: From Theory to Standardization

, 2013
Three dimensional beamforming (3D) (also elevation beamforming) is now gaining a growing interest among researchers in wireless communication. The reason can be attributed to its potential to enable a variety of strategies like sector or user specific ...
Altman, Zwi, Debbah, Mérouane, Kammoun, Abla, Kamoun, Mohamed, Khanfir, Hajer   +4 more
core   +3 more sources

Effect of climatic factors on leaf litter decomposition dynamics of a subtropical scrub forest under field and microcosm conditions

All Life, 2022
This study investigated the leaf litter decomposition dynamics of Hayat-ul-Mir subtropical scrub forest in Pakistan. Litter bags were incubated for 360 days in the forest to elucidate the effect of elevation and incubation time and for 90 days in ...
Gul Zareen Ghafoor, Faiza Sharif, Muhammad Umar Hayyat, Memuna Ghafoor Shahid, Laila Shahzad   +4 more
doaj   +1 more source

The Alien Plants That Threaten South Africa’s Mountain Ecosystems

Land, 2021
The six major mountain ranges in South Africa support critically important ecosystem services—notably water production—and are rich in biodiversity and endemism.
Kim Canavan, Susan Canavan, Vincent Ralph Clark, Onalenna Gwate, David Mark Richardson, Guy Frederick Sutton, Grant Douglas Martin   +6 more
doaj   +1 more source

Snow conditions and usability value of pastureland for semi-domesticated reindeer (Rangifer tarandus tarandus) in northern boreal forest area

Rangifer, 2009
We studied variation in snow conditions and selection of pasture area according to altitude by semi-domesticated reindeer (Rangifer tarandus tarandus) during 1999 - 2002 in a pine forest area utilised by forest industry in the Ivalo reindeer herding ...
Jouko Kumpula, Alfred Colpaert
doaj   +1 more source