勐海县热带林景观生态风险分析

Risk Analysis on Ecological Security of Tropical Forest in Menghai County

以2005年和2015年森林资源二类调查空间数据库为主要信息源,对云南省西双版纳勐海县进行热带林景观生态风险研究。结果显示:勐海县各景观类型空间转移较频繁,橡胶林地、茶叶地、建设用地以流入为主,以天然林为主的其他林地、其他灌木林地以转出为主;2005—2015年景观类型生态安全度除其他灌木林、橡胶林分别降低4.38%和1.51%外,其他景观类型的生态安全度均升高;10年间勐海县景观生态安全平均值由2.2790增至2.5270,但景观生态安全等级仍处于Ⅱ级。因此提出动员全社会广泛参与、加大林业执法力度、完善热带林保护体系等生态安全保护建议。

Based on the spatial database of forest resources survey in 2005 and 2015,the ecological risk of tropical forest landscape in Menghai County of Xishuangbanna,was studied.The results showed that the spatial transfer of landscape types in Menghai County was frequent,and the rubber forest land,tea land and construction land were mainly inflow,while other forest land and other shrub land were mainly outflow;the ecological security of landscape types increased except for other shrub land and rubber forest land from 2005 to 2015,which decreased by 4.38%and 1.51%respectively;the average value of landscape ecological security in Menghai County increased from 2.2790 to 2.5270 in 10 years,but the landscape ecological security level was still in grade II.Therefore,this paper suggested to mobilize the participation of the whole society,strengthen the forestry law enforcement,and improve the tropical forest protection system.