Water-use efficiency (WUE), defined as the ratio of net primary productivity (NPP) to evapotranspiration (ET), is an important indicator to represent the trade-off pattern between vegetation productivity and water consumption. Its dynamics under climate change are important to ecohydrology and ecosystem management, especially in the drylands. In this study, we modified and used a late version o...

BACKGROUND Home gardens (HGs) provide perspectives for conservation of plant genetic resources while contributing to improving livelihoods. However, knowledge of local factors shaping their ownership, plant diversity (PD) and structure is still limited especially in West-Africa, where food insecurity is acute. This is critical to ensure effective mainstreaming of HGs into future biodiversity co...

Despite the fact that gross primary productivity (GPP) and water use efficiency (WUE) have been widely used as indicators to evaluate water-carbon cycle, uncertainties exist in patterns of GPP WUE responses climate variability along different aridity gradients. In this study, index was divide China into four arid-humid zones. The spatiotemporal multiple vegetation types response change under zo...

Accurately mapping the spatial distribution of forests in sub-humid to semi-arid regions over time is important for forest management but a challenging task. Relatively large uncertainties still exist in the spatial distribution of forests and forest changes in the sub-humid and semi-arid regions. Numerous publications have used either optical or synthetic aperture radar (SAR) remote sensing im...

Abstract Drought is the most important factor limiting growth and production of wheat in China. Arid semi-arid regions high water consumption agricultural sector have led to various deficit irrigation strategies. The effect hydrological process on yield has been evaluated rainfed cultivation for three climatic stations Gansu Province, Yellow River Valley, A general framework was provided arid r...

The Middle East encompasses five ecological domains: (1) the humid highlands and their intermontane valleys, where rainfed farming was begun and permanent settlements were first established; (2) the semi-arid steppes, where the lesser amount and instability of rainfall made rainfed farming marginal but still provided vegetative resources that could be utilized by semi-nomadic pastoralists; (3) ...

petrography, modal analysis of sandstones and major elements geochemistry of shales of early cambrian zagun formation in sarbandan section, central alborz, are used to identify their provenance (including parent rocks, tectonic setting and paleo-weathering). petrography of the sandstones and plotting their point counting data on qt44, f47, l9 and qm44, f45 ,lt11 diagrams imply that they are ark...