Results 71 to 80 of about 1,273,384 (280)

From Trapped to Resilient Mountains: Diversified Coupling Pathways Linking Land Use Transition and Rural Revitalization for Mountain Sustainable Development

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT The synergistic interplay among land use transition, rural revitalization, and sustainable development is critical for harmonizing human‐land‐economic systems. Understanding their diverse coupling pathways is key to resolving human‐land conflicts and advancing sustainable rural development in mountainous regions. However, existing research has
Luanyu Zhou   +10 more
wiley   +1 more source

Kalahari vegetation: veld condition trends and ecological status of species

open access: yesKoedoe: African Protected Area Conservation and Science, 1991
Grazing intensity gradients were determined in the duneveld, river terrace and river bed habitats of the Kalahari Gemsbok National Park. Under increased grazing, a species composition characterised mostly by annual forbs and grasses results. In all three
N. Van Rooyen   +2 more
doaj   +1 more source

Formation and evolution of the lower terrace of the Rhine river in the area of Basel [PDF]

open access: yes, 2009
The response of fluvial systems to tectonic activity and climate change during the Late Pleistocene influenced sedimentary processes and hence the conditions of river terraces formation.
Rentzel, Philippe   +8 more
core   +2 more sources

Saussurea × media (Asteraceae), a new natural hybrid between S. parviflora and S. controversa

open access: yesNordic Journal of Botany, EarlyView.
Saussurea × media Yusupovsky and E.Pjak (Asteraceae), a new nothospecies from the Altai‐Sayan Mountains, is described and illustrated. In this study, we sequenced the internal transcribed spacer of nuclear ribosomal DNA and the chloroplast intergenic spacers rsp16‐trnQ and ycf4‐cemA to verify the hypothesis of hybridization between Saussurea parviflora
Daniil V. Yusupovsky, Elizaveta A. Pyak
wiley   +1 more source

Analysis of Geomorphologic Structure of Second Terrace in Guanting Basin in Qinghai Province

open access: yesShuitu baochi yanjiu, 2005
Through the field research of landform and cultural sites in Guanting basin of the upper reaches of the Yellow River in Qinghai Province, the authors analyzed the structure of the second terrace of Guanting basin and concluded that the second terrace ...
ZHANG Xiao-hu, XIA Zheng-kai
doaj  

Zooarchaeology of Houses and Middens: Investigating Patterns of Assemblage Composition at Early Inuit Sites Across the North American Arctic

open access: yesInternational Journal of Osteoarchaeology, EarlyView.
ABSTRACT This study examines faunal assemblages from paired semisubterranean houses and middens at 10 Early Inuit sites spanning the North American Arctic (ca. 1200–1500 ce) to evaluate whether local resource bases or other factors primarily structure zooarchaeological variability.
Lauren E. Y. Norman   +2 more
wiley   +1 more source

River Terraces along the Upper Mabechi River

open access: yesAnnals of The Tohoku Geographycal Asocciation, 1987
Formation of river terraces along the upper Mabechi River in northeast Japan is investigated tephrochronologically and its relation to piedmont gentle slope is discussed.Four terraces, that is, the Higher Terrace, Terrace I, Terrace II and Terrace III, are recognized in the study area.
openaire   +2 more sources

Coexisting ant species differ in ability to meet their intrinsic nutritional needs

open access: yesOikos, EarlyView.
Coexisting species are often assumed to reduce competition by foraging for foods that differ in nutrient composition, but few studies test whether field nutritional differences correspond to intrinsic differences in macronutrient selectivity. We compared field estimates of worker trophic position (tissue isotopes: δ15N) and worker tissue stoichiometry (
Hannah L. Riskas   +4 more
wiley   +1 more source

Quartz Electron Spin Resonance (ESR) Dating of River Terraces in the Zhenjiang River of the Upper Beijiang River

open access: yesRedai dili
River terraces are important geomorphic indicators that reveal the evolution of rivers, and their climatic and tectonic responses. Dating is key to studying terrace evolution.
Cheng Ziye   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy