呼和浩特市森林承载力综合评价研究

Comprehensive Evaluation on Forest Carrying Capacity in Hohhot

森林是生态系统的重要组成部分,在提高和改善环境质量方面发挥着重要作用。以呼和浩特市森林资源二类调查相关数据为依据,运用层次分析法、综合指数法等方法,对呼和浩特市森林承载力指数进行计算,结果表明:目标层森林承载力指数(FCC)为0.8585,其中4个准则层承载指数分别是森林结构承载指数(FCC1)为0.9279,森林生态承载指数(FCC2)为0.5120,经济发展承载指数(FCC3)为0.7866,社会发展承载指数(FCC4)为1.8652,社会发展需求承载力最好,结构发展需求承载力次之,经济和生态需求承载力较弱;同时,运用森林资源可持续评价划分标准对呼和浩特市森林状态进行评价,表明呼和浩特市森林承载力处于弱中等承载状态;准则层森林结构需求的权重为0.4424,是加强森林承载力的关键因素,今后要更加注重森林结构的优化。

As an important part of ecological system, forest plays an important role in enhancing and improving en- vironmental quality. Based on the investigation data of forest resource survey in Hohhot, the forest carrying capacity index has been calculated by use of AHP and the comprehensive index method. The results show that the forest car- rying capacity index （ FCC ） of target layer is 0. 8585, in which, the carrying indexes of four criteria layers are structure carrying index （FCC1 =0.9279）, ecological carrying index （FCC2 = 0. 5120）, economic carrying index （ FCC3 = 0.7866） and social carrying index （ FCC4 = 1. 8652 ）, respectively. The carrying capacity of society de- velopment demand is the best, the carrying capacity of structure development demand takes the second place, and the carrying capacity of economic and ecological demand is weaker. The forest situations of Hohhot have been eval- uated by use of the sustainable evaluation and division standard of forest resources, which shows the forest carrying capacity of Hohhot keeps at a weak medium state. The weight of forest structure demand in criterion layer is 0. 4424, which is a key factor for strengthening the forest carrying capacity. And more attentions should be paid to optimizing the forest structure in the future.