库布齐沙漠东缘防沙治沙生态效益评价

[目的]研究库布齐沙漠东缘防沙治沙生态效益,为沙漠化治理效益评价提供科学参考。[方法]通过建立了库布齐沙漠东缘防沙治沙生态效益评价指标体系,采取层次分析法和模糊综合评价法进行生态效益评价。[结果]在生态效益评价指标的权重中,排在前3位的分别是植被盖度、地上生物量、草层高度评价指标,植被因子在沙漠化治理中较其他因子更为重要,植被恢复状况对库布齐沙漠化治理的影响显著;基于模糊综合评价结果可知,研究区防沙治沙生态效益值为53,属于一般状况。当地农户普遍认为防沙治沙明显改善了当地生态环境,大多数农户对沙漠化治理工作认同度较高。[结论]随着生态政策和治理措施的推进,治理效益将呈现良好态势;农户生态环保意识较差,还需加强农户生态环保意识,并提高农民文化水平。

Evaluation of Ecological Benefit of Combating Desertification in East Edge of Hobq Desert

[Objective] Ecological benefit of combating desertification in east edge of Hobq desert was studied in order to provide scientific reference for benefit evaluation of desertification control.[Method] The assessment index system of ecological benefits of combating desertification was established, and the ecological benefit was evaluated by analytic hierarchy process and fuzzy comprehensive evaluation method.[Results] Among the ecological benefit evaluation indicators, the top three were vegetation coverage, aboveground biomass and grass height. Vegetation factor was more important than other factors in desertification control, and vegetation recovery had a significant impact on the management of the desertification. Based on the fuzzy comprehensive evaluation, the assessment index value of ecological benefit of combating desertification in the east edge of Hobq desert was 53 as the general level. Farmers generally believed that sand control had obviously improved the local ecological environment, and most of the farmers had a higher degree of recognition for the desertification control.[Conclusion] With the promotion of ecological policies and management measures, management benefit will show a good sitution. The farmers'' awareness of eco-environmental protection is poor and need to be strengthened, and their cultural level need to be improved.