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Wednesday, April 11 • 1:45pm - 2:00pm
ECOSYSTEM SERVICES: Constraint Relationships Between Ecosystem Services in the Agro-Pastoral Transitional Zone of China

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AUTHORS: Deyong Yu, Ruifang Hao – Beijing Normal University

ABSTRACT: The restoration of degraded vegetation can effectively improve ecosystem services, increase human well-being, and promote regional sustainable development. Understanding the dynamics, relationships, and their drivers is an important step in informing decision makers for promoting ecosystem service management and sustainable development. In this study, we analyzed the changing trends in five critical ecosystem services of net primary productivity, soil conservation, wind erosion, water yield and water retention in a typical of grasslands in North China, and quantified how climatic factors and landscape patterns affect the ecosystem services on both annual and seasonal time scales. Overall, the results indicated that vegetation restoration can effectively improve the five grassland ecosystem services, and precipitation is the most critical climatic factor. A win-win situation in terms of grassland ecosystem services can be achieved by increasing grassland aggregation, partitioning the largest grasslands, dividing larger areas of farmland into smaller patches, and increasing the area of appropriate forest stands. The relationships of ecosystem services were characterized as tradeoff and synergy in most of the current studies. Here, we found that there is another relationship, namely, constraint effect between ecosystem services, which was represented by extracting constraint line from the scatter plot. Selecting the agro-pastoral transitional zone of North China as the study area, we examined the relationships between paired ecosystem services through the method of segmented quantile regression on different levels. The results indicated that there are seven kinds of constraint effects between the ten paired ecosystem services, namely, (1) positive linear, (2) negative linear, (3) logarithmic, (4) negative concave, (5) backwards S-shaped, (6) hump-shaped, and (7) wave-shaped. The constraint line approach enriched the understanding of linkages between ecosystem services and the potential drivers and can be used by policy makers to detect and design the land use schemes in terms of ecosystem service optimization.

Wednesday April 11, 2018 1:45pm - 2:00pm CDT
LaSalle 2 (7th Floor)

Attendees (5)