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Service value assessment of orchard ecosystem: A case of  Putian City of Fujian.  Eco-Economic Value of Soil Conservation Service of Orchard Ecosystems in Beijing Mountainous Area: a Case Study of Orchard in Pinggu District of Beijing THE NICHE OF IMPORTANT PESTS AND NATURAL ENEMIES AND COMPETITION AMONG THE SPECIES IN JUJUBE ORCHARD ECOSYSTEM Effects of different patterns surface mulching on soil properties and fruit trees growth and yield in an apple orchard.