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Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
Published on: December 9, 2012
Multiscale agrobiodiversity conservation: modeling epigaeic arthropod diversity with landscape heterogeneity and
Yufei Zhang1, Zhenxing Bian1, Xiaoyu Guo1
1College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, China; Key Laboratory of Cultivated Land System Protection, Department of Natural Resources of Liaoning Province, Shenyang, 110866, China.
Abstract:
Agricultural landscape heterogeneity and ecosystem services are inextricably linked to emerging biodiversity patterns, while landscape design and ecosystem service regulation serve as effective strategies for biodiversity conservation. This study constructed ecological models integrating landscape variables, ecosystem services, and epigaeic arthropod diversity across three scales: field, watershed and county. The independent and combined effects of landscape composition, configuration and various types of ecosystem services on epigaeic arthropods, as well as the scale heterogeneity of these effects, were analyzed. The results showed that ecosystem services significantly increased the explanatory power of landscape variables on epigaeic arthropod diversity and mediated the influence of landscape heterogeneity on epigaeic arthropod diversity. At the watershed scale, the influence of forest occupancy on epigaeic arthropod diversity was indirectly mediated by ecosystem services such as habitat quality, carbon sequestration and water yield. The effects of landscape composition, landscape configuration, and ecosystem services on epigaeic arthropod diversity exhibited scale-dependent heterogeneity. At the county scale, landscape heterogeneity played a stronger role in explaining epigaeic arthropod diversity, while at the watershed scale, the mediating influence of ecosystem services was more pronounced. This study provides a scientific foundation for designing multi-level and multi-scale landscape planning and ecosystem management strategies.
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