Regime shifts are abrupt transitions between alternate ecosystem states including desertification in arid regions due to drought or overgrazing. Regime shifts may be preceded by statistical anomalies such as increased autocorrelation, indicating declining resilience and warning of an impending shift. Tests for conditional heteroskedasticity, a type of clustered variance, have proven powerful le...

Drylands throughout the world have always undergone periods of degradation due to naturally-occurring fluctuations in climate. However, over the past century, the human population in drylands has grown exponentially and the resulting pressures on the landscape have exacerbated various desertification processes, particularly in Africa. The degradation of drylands has led to changes in local, reg...

Desertification has become a major problem in the field, affecting both global ecological environment and economy. The effective monitoring of desertified land is an important prerequisite for desertification protection governance. With aim addressing problems spectral confusion as well salt pepper phenomenon concerning successful extraction information by utilizing pixel-based method studies, ...

Desertification and the expansion of deserts are regarded as a major threat to human livelihoods ecosystem services, well achieving Sustainable Development Goals. Humans have been recognized significant agents in desert-like conditions, through agency desertification/land degradation, contributions global climate change. Yet, how desertification changes whether or change drives these processes ...

Soil degradation is a global phenomenon affecting the productivity of agricultural land. Due to low vegetation cover and aggressive climate, Morocco presents significant case soil through erosion desertification. The Ouergha catchment highly vulnerable this scourge. objective study was assess sensitivity land in area. MEDALUS approach, widely used Mediterranean region, soils degradation/deserti...

In northern China, the recent eco-environment protective policies played a very important role in the ecological environment protection and rehabilitation. To better understand the quantitative effect of the prohibiting grazing policy on grassland desertification reversal process, in this paper, Yanchi County was selected as a case study to conduct a quantitative research on the effect of prohi...

T he environmental refugee has appeared in the literature on environment and security, and with it the refugee as both a cause and victim of conflict. Some fear environmental degradation will produce "waves of environmental refugees that spill across borders with destabilizing effects" on both domestic order and international stability (Homer-Dixon 1991:77). Others focus on Africa, as the presu...