茂名小良桉树人工林生态经济效益分析与评价

利用模糊数学的方法,通过对小良的实地调杳和专家走访,挑选了30个对小良桉林生态经济影响较大的因子.建立了评价因子指标体系和五个评价等级,采用二个层次的综合评价模型对小良桉林生态经济效益首次进行了定量的综合评价.评价结果是:现在小良桉林生态经济效益为一般.总体态势是:16%为好,26%为较好,31%为一般.23%为较差,4%为差.综合评价得分为79.85分,介于一般和良好之间,这说明在小良桉树人工林的发展过程中存在许多显性的、潜在的问题,如果还不注意合理利用林地资源,就会使森林资源变为不可更新资源,不可持续利用.因此,科学客观地分析与评价小良桉林产业生态经济效益,为区域可持续发展提供科学依据和发展良策,实现生态和经济的综合调控具有现实意义.

Analysis and evaluation on ecological and economic benefits of eucalyptus plantation in Xiaoliang, Maoming, Guangdong

Nowadays, the Soil and Water Conservation station of Maoming Xiaoliang tried its best to develop the industry of eucalyptus plantation and got some economic efficiency for the regional development when the ecology has basically recovered. However, it also brought some serious crisis to Xiaoliang which belongs to an ecological fragile area. How to make full use of the advantages such as natural conditions, the ripe planting skills, the huge market and so on, to decrease the ecological disadvantages and coordinate ecological issues and economic benefits, which will be an important topic that has to be solved during the sustainable development of Xiaoliang. The author used the fuzzy mathematics to build an evaluation factor index system and five evaluation grades, through the fieldwork and the experts' visit, choosing 30 factors which has a great effect on the ecological economy of eucalyptus plantation of Maoming, and using two levels comprehensive evaluation modes to give a quantitative evaluation about the ecological and the economic benefits of eucalyptus plantation of Xiaoliang at the first time. The result is that, the economic benefits of eucalyptus plantation of Xiaoliang just is on a general level. The whole tense is that 16% good, 26% better, 31% common, 23% worse and 4% bad. The comprehensive evaluation score is 79.85 that is between the common and the good, which means there is many clear potential problems during the development of Xiaoliang eucalyptus plantation. If we take no notice of using the forestland resource appropriatly, it will turn to be non-renewable resources which we can not use it again. Therefore, to analysis and evaluate the ecological and economic benefits of Xiaoliang eucalyptus forest industry scientifically and objectively, and to provide a scientific basis for the regional sustainable development which will make a very important practical significance on achieving an ecological and economic regulation.