earticle

영어

Agroforestry projects have been implemented in arid and semiarid regions to prevent desertification and to increase income. However, the survival of trees and crops is poor due to strong winds and dryness, and therefore agroforestry benefits are limited. The purpose of this study was to analyze impacts of tree planting on windspeed reduction and crop productivity at an agroforestry site in Mongolia. The study established shelterbelts with 3-row tree planting and sowed income crops within the shelterbelts in May, 2014. Tree species planted were Populus sibirica and Hippophae rhamnoides, which are native to desert regions. Income crops included potato, oat, wheat, and alfalfa, reflecting residents’ attitudes and a short growing season. The study measured changes in windspeed and crop production inside and outside the shelterbelts over the growth periods for 4 years from 2014 to 2017. The tree planting reduced windspeed by a maximum of about 60% at a leeward distance and increased crop productivity by maximally about 7 times. The study explored desirable shelterbelt structures to maximize the function of windspeed reduction. Study results could be internationally useful for agroforestry practices to improve ecological and economic benefits.