朝阳县国有林场生态公益林现状调查

Investigation on the Present Situation of Ecological Public Welfare Forest of State-owned Forest Farm in Chaoyang County

调查朝阳县6个国有林场生态公益林现状,分析其变化原因及存在的问题,并对变化因子进行了修正。结果表明:朝阳县国有林场生态公益林变化小班数和变化面积分别占国有林场生态公益林小班数量和面积的15.42%和3.73%;朝阳县国有林场生态公益林各小班变化原因占小班变化面积的比例最大的为毁林开荒,占变化面积的32.59%,其次是前期误差和人为原因,分别占29.09%和26.04%,未经审批使用林地面积占变化面积的6.07%,其它原因、进界人工林、造林更新、更新采伐、人工造林、干旱、人工更新等变化原因占变化面积为0.23%~1.52%。

This paper investigates the current status of ecological public welfare forests in 6 state-owned forest farms in Chaoyang County,analyzes the reasons for its changes and existing problems,and modifies the change factors.The results showed that:the number and area of change of the ecological public welfare forest of the state-owned forest farm in Chaoyang County accounted for 15.42%and 3.73%of the number and area of the ecological public welfare forest of the state-owned forest farm respectively;The reason for the change of each sub-class of the ecological public welfare forest of the Chaoyang County State-owned Forest Farm accounts for the largest proportion of the small-class change area is deforestation and reclamation,Accounted for 32.59%of the change area,Followed by early errors and human causes,accounting for 29.09%and 26.04%respectively.The area of unapproved use of forest land accounted for 6.07%of the changed area,and other reasons,such as the entry of artificial forests,afforestation renewal,renewal logging,artificial afforestation,drought,and artificial renewal,accounted for 0.23%to 1.52%of the changed area.