水保所知识产出(1956---)知识库

Identifying the scale effect of relationships between ecosystem services (ESs), and determining which factors af-
fect such relationships and the spatial distribution patterns of these effects can assist in the sustainable manage-
mentofESs.TakingtheLoessPlateau(LP)asastudyarea,wecomparedandanalyzedthechangeinthetrade-offs
andsynergiesbetweenfourESs(i.e.wateryield,netprimaryproduction,soilconservation,andgrainproduction)
at seven different scales. In addition, the spatial correlations between these trade-offs/synergies and factors re-
lated to climate, vegetation restoration and urbanization at the county administrative scale were analyzed
using a geographically weighted regression (GWR) model. The results showed that most relationships between
ESs were synergistic and robust across all seven scales, and most correlations between ESs are enhanced as the
scale increases, as a result of the “peak cutting and valley filling” process of scale synthesis. In addition, almost
all the relationships between ESs had the strongest synergies or the weakest trade-offs at the municipality ad-
ministrativescale.Theoccurrenceoftrade-offs/synergiesbetweenESswascloselyrelatedtoclimaticfactors,veg-
etation restoration factors and urbanization factors, and, in addition, properties and intensity of the correlations
varied spatially. Amongthesefactors,vegetation cover(VEG), annual average temperature(TEM), and construc-
tion land percentage (CLP) were more highly correlated with the trade-offs/synergies. This study contributes to
extending our understanding of the way in which interactions between ESs depend on spatial scale, and could
inform decision-makers about how to control various influencing factors to improve the local ecology under
local conditions.