Mineral dust provenances are closely related to the orogenic processes which may have distinct Hf-Nd isotopic signatures. Here we report the clay-sized (<2 μm) Hf-Nd isotope data from Asian dust sources to better constrain the source and transport dynamics of dust deposition in the North Pacific. Our results show that there is a more positive radiogenic Hf isotopic composition with clay-sized f...

Food deserts are increasingly considered as a potential cause of overweight and obesity, yet existing literature is largely inconclusive in part due to the infeasibility of sorting out multiple confounding mechanisms from a purely empirical perspective. This article investigates the hypothesized causality in a rational-choice framework, where the individual chooses how much to patronize a dista...

A number of recent policy interventions have focused on “food deserts,” areas where inhabitants have limited access to nutritious foods, as causal factors in the United States’ obesity epidemic. Yet in the city of St. Louis, many areas with high concentrations of high-risk, low-income households do not qualify as food deserts. I survey grocery and convenience stores in areas with differing leve...

Recent studies of soil carbon cycle in arid and semi-arid ecosystems demonstrated that there exists an abiotic CO2 absorption by saline-alkali soils (Aa) at desert ecosystems and suggested potential contributions of CO2 dissolution beneath deserts to the terrestrial ecosystems carbon balance. However, the overall importance of such soil CO2 uptake is still undetermined and its implications to t...

The Italian locust is a common species and one of the most important pest in steppes, semi-deserts, deserts Central Southwestern Asia also Mediterranean Region. aim this paper to discuss some problems arising from studies eco-geographical distribution long-term dynamics species, especially southern part West Siberia, their consequences for management rare forms. Peculiarities populations’ are d...

Deserts are important landscapes on the earth and their variations have impacts global climate through feedback processes. However, there is a limited understanding of climatic controls spatial temporal deserts. Here, we use reanalysis datasets, land use/land cover (LULC) products CMIP6 (Coupled Model Intercomparison Project) model outputs to calculate changing deserts during 1982–2020, estimat...