CAJ | 학술논문

近年来,全国各地尤其是北方地区农地杨树化现象比较普遍。基于对鲁南地区的调研,建立＂领导-跟随者＂模型,发现产生农地杨树化现象的传导机制为：少数富裕农民为追求自身收益最大化而在各个兼业上优化劳动时间配置而率先种植杨树,杨树种植所产生的外部性对邻地农民造成损害,邻地农民也被迫在自家的良田上种植杨树,由此导致了杨树泛滥成灾。杨树化有一定的碳汇作用,但粮食耕种面积的减少不利于我国的粮食安全。为此,应采取相应的治理措施,解决外部性导致的隐性侵权问题,鼓励少数富裕农民将良田歇耕,完善土地承包经营权流转制度。
근년래,전국각지우기시북방지구농지양수화현상비교보편。기우대로남지구적조연,건립＂령도-근수자＂모형,발현산생농지양수화현상적전도궤제위：소수부유농민위추구자신수익최대화이재각개겸업상우화노동시간배치이솔선충식양수,양수충식소산생적외부성대린지농민조성손해,린지농민야피박재자가적량전상충식양수,유차도치료양수범람성재。양수화유일정적탄회작용,단양식경충면적적감소불리우아국적양식안전。위차,응채취상응적치리조시,해결외부성도치적은성침권문제,고려소수부유농민장량전헐경,완선토지승포경영권류전제도。
In recent years,throughout the country especially in North-China poplar is widely planted in agricultural land. Basing on the research on the south region of shandong province,we establish a ＂leader-follower＂ model,that analyze the causes of poplar planting：a few wealthy farmers who works on various part-time jobs firstly plant poplar trees to maximize their own benefits,which bring about negative externalities on the neighborhood agricultur-al land. Then the adjacent land farmers are forced to plant poplar in their own fertile land,which lead to poplar overspread. Poplar has a certain role for carbon sinks,but the reduction in grain acreage affects the nation＇s food security.Therefore,we should take appropriate remedial measures to solve the underlying tort of externalities,and en-courage few wealthy famer to stop growing,and to perfect the transfer system of land contractual right.