乾旱区 meaning in English

arid region

Oasis is a peculiar geographical view in arid district , if there is water , there becomes oasis ; if there is no water , there turns into desert
摘要绿洲是乾旱区特有的地理景观，有水成绿洲，无水变荒漠。
Taking changling county in south west songnen plain as an example , with the principles of regional agriculture sustainable development , ecological economics , feedback control theory and system dynamics , the article sets up the model of optimal adjustment for agricultural eco environment system in arid and semi - arid regions
摘要以松嫩平原西南部的长岭县为例，依据区域农业可持续发展理论、生态经济学、反馈控制理论和系统动力学原理，建立乾旱半乾旱区农业生态环境系统动力学模型。