Book Reviews by Sana Ullah
Basic information, 2008
The Bolivian Andes cover approximately 35% of the national territory and possess seven different ... more The Bolivian Andes cover approximately 35% of the national territory and possess seven different ecoregions. The use of biodiversity resources found at 1,000 meters and above have been influenced and transformed in a variety of ways by historic processes. The ethnic composition of the high Andes is principally comprised by Aymara, Quechua, Uru, and Kallawaya populations, however peasant or campesino populations should also be considered as important inhabitants of the region. The Andean cultures have developed important crop species and the region is the center of origin of species such as Chenopodium quinoa and Solanum tuberosum, among others. Many additional plant species have been domesticated and employed in distinct uses, such as for medicines, construction, fuel and spiritual activities. An analysis of ethnobotanical publications in the National Herbarium of Bolivia (LPB) is also presented, showing that 94% of the documents in the collection have been carried out since the 1970s and concentrate on specific groups and themes such as the Kallawaya ethnic group and their knowledge medicinal plant use. Approximately 63% of the documents reviewed focus on one category of use, of which 42% concern the study of the use of medicinal plants. Other areas that have received study are specific works on the use of plants for crafts, food, forage, and fuel.
Papers by Sana Ullah
Environmental Science and Pollution Research, 2021
This study explores the symmetric and asymmetric effects of the shadow economy on clean energy an... more This study explores the symmetric and asymmetric effects of the shadow economy on clean energy and air pollution of South Asian countries over the period 1991–2019. The short-run ARDL findings for the clean energy model suggest that shadow economy increases clean energy consumption in Pakistan and Sri Lanka, whereas this effect is negative for India and insignificant for other countries. The long-run results indicate the adverse impact only for India and the effects of tax revenue on clean energy are positively significant in Sri Lanka while negatively signiicant in Nepal and Bangladesh. Institutional quality significantly increases clean energy in Pakistan, India, and Nepal. However, in the case of Pakistan and Nepal, institutional quality deteriorated the environmental quality. The results for the pollution model confer that shadow economy increases emissions in Pakistan, decreases in Bangladesh and Nepal, and has no effect in India and Sri Lanka. The nonlinear ARDL results reveal...
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Book Reviews by Sana Ullah
Papers by Sana Ullah