制约中寻找和谐——从《沙郡年记》看阿尔多·李奥帕德的生态思想
제약중심조화해——종《사군년기》간아이다·리오파덕적생태사상
Look for the diapason in the supervision——Seeing the ecological thought of Aerduo·Liaopade from the Shajunshaonian