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Displaying 176 - 180 of 1605

Representing composition, spatial structure and management intensity of European agricultural landscapes: A new typology

Journal Articles & Books
december, 2016
Europe

Comprehensive maps that characterize the variation in agricultural landscapes across Europe are lacking. In this paper we present a new Europe-wide, spatially-explicit typology and inventory of the diversity in composition, spatial structure and management intensity of European agricultural landscapes. Agricultural landscape types were characterized at a 1km2 resolution based on Europe-wide datasets that represent land cover, landscape structure and land management intensity.

Quantification and assessment of changes in ecosystem service in the Three-River Headwaters Region, China as a result of climate variability and land cover change

Journal Articles & Books
december, 2016
China

Rapid and periodic assessment of the impact of land cover change and climate variability on ecosystem services at regional levels is essential to understanding services and sustainability of ecosystems. This study focused on quantifying and assessing the changes in multiple ecosystem services in the Three-River Headwaters Region (TRHR), China in 2000–2012.

Relating landscape to stream nitrate-N levels in a coastal eastern-Atlantic watershed (Portugal)

Journal Articles & Books
december, 2016
Portugal

We apply a linear regression mixed effects model to explore the influence of landscape factors on nitrate-N concentrations in a coastal watershed of Portugal. Landscape composition and configuration metrics, together with variables assessing the physical characteristics of the study area, were used. The analysis was performed using seasonal data from the years 2001 and 2006. The seasonal influence was included as a random effect to account for temporal correlations. Together, the fixed and the random factors explain 78% of the variance, whereas the fixed factors alone explain 10%.

Aphid parasitoids respond to vegetation heterogeneity but not to fragmentation scale: An experimental field study

Journal Articles & Books
december, 2016

How animal populations respond to habitat manipulations is a central theme in ecology. In recent years, the role that vegetation heterogeneity plays in regulating arthropod populations has received particular attention in both conservation science and agricultural ecology. Numerous observational studies have demonstrated that herbivores and their natural enemies are sensitive to vegetation heterogeneity, but the individual effects of percentage land cover, degree of fragmentation and patch size remain little understood.

allocation and management of critical resources in rural China under restructuring: Problems and prospects

Journal Articles & Books
december, 2016
China

Rapid and far-reaching development transition has triggered corresponding restructuring in rural China especially since the turn of the new millennium. Recently, there has been an increasing trend emphasizing regional resources in formulating rural development policy and restructuring rural areas. This paper analyzes the rural restructuring in China affected by the allocation and management of critical resources including human resource, land resource and capital, by establishing a theoretical framework of “elements-structure-function” of rural territorial system.