Results 81 to 90 of about 138,471 (193)

Evolution of rocky desertification and its response to land use changes in the karst areas of Guangxi

open access: yesCarsologica Sinica
This study focuses on the karst areas of Guangxi, Southwest China, which cover an area of 9.87×104 km2 (accounting for 41% of Guangxi's total land area) and feature a subtropical monsoon climate, complete karst landforms (dominated by peak cluster ...
Degen ZHU   +6 more
doaj   +1 more source

How Is Overland Flow Sediment Transport Capacity Affected by Biological Crusts?

open access: yesWater Resources Research, Volume 62, Issue 11, November 2026.
Abstract Overland flow sediment transport capacity (Tc ${T}_{c}$) governs soil detachment and sediment deposition processes, yet its regulation by biological soil crusts (BSCs), particularly across varying algae–moss community compositions, remains poorly quantified.
Jing Wang   +7 more
wiley   +1 more source

An Overview of the Rock Art of AlUla: Tracing Changes in Content and Form Across 12,000 Years of Human History

open access: yesArabian Archaeology and Epigraphy, Volume 37, Issue 1, Page 43-69, November 2026.
ABSTRACT Between 2018 and 2021, the Identification and Documentation of Immovable Heritage Assets (IDIHA) Project recorded over 19,000 rock art panels in the AlUla (al‐‘Ulā) region of north‐western Saudi Arabia. This study presents a chronological assessment of the corpus, drawing on superimpositions, datable motifs, inscriptions, and varnish formation,
Maria Guagnin   +3 more
wiley   +1 more source

Examining New Donors in the OECD's Development Assistance Committee

open access: yesJournal of International Development, Volume 38, Issue 7, Page 1097-1109, October 2026.
ABSTRACT How do emerging donors integrate into the existing international aid architecture? While the existing literature focuses largely on emerging donors from the Global South, such as Brazil, China, India and Russia, there are many emerging donors from the Global North that have joined the OECD's Development Assistance Committee (DAC)—the premier ...
Nicolas Bau   +3 more
wiley   +1 more source

Using the Radial Basis Function Network Model to Assess Rocky Desertification in Northwest Guangxi, China

open access: yes, 2010
Karst rocky desertification is a progressive process of land degradation in karst regions in which soil is severely, or completely, eroded. This process may be caused by natural factors, such as geological structure, and population pressure leading to ...
Luffman, Ingrid   +15 more
core   +1 more source

Relationship Between Karst Rocky Desertification Distribution and Slope Under Different Spatial Scales

open access: yesShuitu baochi yanjiu, 2009
Based on the image of SPOT5 in 2005,karst rocky desertification landscape patterns in Boluo area was classified as:no,latent,slight,moderate,strong,and extremely strong karst rocky desertification types.Furthermore,this paper discussed the relationship ...
LI Yang-bing1   +4 more
doaj  

Estimating ecological indicators of karst rocky desertification by linear spectral unmixing method

open access: yesInternational Journal of Applied Earth Observation and Geoinformation, 2014
AbstractCoverage rates of vegetation and exposed bedrock are two key indicators of karst rocky desertification. In this study, the abundances of vegetation and exposed rock were retrieved from a hyperspectral Hyperion image using linear spectral unmixing method. The results were verified using the spectral indices of karst rocky desertification (KRDSI)
Xia Zhang   +4 more
openaire   +1 more source

Coupling of Rocky Desertification Distribution and Soil Erosion Under Different Slope Grades in a Typical Karst Basin

open access: yesShuitu baochi yanjiu, 2020
Meteorological data, remote sensing data in the Nantong underground river basin and improved RUSLE model were used to quantitatively analyze the relationship between rocky desertification and soil erosion in different slopes, with the support of remote ...
CHEN Jinke   +5 more
doaj  

Spatial and Temporal Variation Features of Rocky-desertification in Karst Area Based on RS and GIS Technology——A Case Study of Cili County,Hu’nan Province

open access: yesShuitu baochi yanjiu, 2008
Using Cili county as the study area,through contrasting and analyzing the aerial images of 1990 and 2003,the spatial and temporal changes characters of rocky-desertification was studied in this paper by using RS and GIS technology.The results show that ...
WANG Xiao-yan1, XU Zhi-gao2
doaj  

Mean values of the average precipitation, NDVI, and ETa in different severity categories of rocky desertification areas.

open access: yes, 2016
Mean values of the average precipitation, NDVI, and ETa in different severity categories of rocky desertification areas.
Yuguo Liu (381698)   +7 more
core   +1 more source

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