ZHU Junhua,DUAN Xu,CHEN Zhixin,et al.Discussion of the Correlation Between Eco-environment and Geological Disasters in Yan’an Area[J].Research of Soil and Water Conservation,2017,24(04):163-167.
延安地区生态环境与地质灾害相关性探讨
- Title:
- Discussion of the Correlation Between Eco-environment and Geological Disasters in Yan’an Area
- Keywords:
- Yan’an area; eco-environment; vegetation coverage rate; land-use types; geological disasters
- 分类号:
- P642.22;S718.51
- 摘要:
- 根据延安地区12县1区地质灾害详细调查成果，对调查数据进行了统计分析，并结合遥感技术，总结了区内生态环境（植被覆盖率、土地利用类型）与地质灾害发育程度的关联性。结果表明：区内植被覆盖率越高，地质灾害发育程度越小，反之则地质灾害发育程度越大；植被覆盖类型中林地覆盖率越高的地区地质灾害密度越小，而草地覆盖率与地质灾害没有明显的关联性；与人类活动相关的耕地、水域及水利设施用地、城镇、工矿及交通建设用地等土地利用类型占比与地质灾害发育密度之间总体上呈正比关系。该研究对延安地区防灾减灾和土地利用规划工作具有一定的参考价值。
- Abstract:
- According to the disasters detailed survey achievements of 12 counties and 1 district in Yan’an area, counting and analyzing the survey data, combining with remote sensing technology, the correlation between eco-environment(vegetation coverage rate, land-use types) and geological disasters were summarized as follows. The higher rate of vegetation coverage is, the smaller development degree of geological disasters is, otherwise, the higher development degree of geological disasters is. In the aspect of vegetation coverage types, the woodland coverage rate is the predominant influence factor for geological disaster density, and the grassland coverage rate has no distinct relevance with it. The land-use types that are related to human activities (cultivated land, water and water consevancy facilities land, urban and industry land, transportation constructiong land) are generally proportion to the geological disaster density. These results have the reference values for geological disaster prevention and reduction and land-use planning in Yan’an area.
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备注/Memo
收稿日期:2016-06-20;改回日期:2016-06-28。
基金项目:国家自然科学基金“受三趾马红土控制的黄土滑坡滑带土的非饱和蠕变特性试验研究”（41502278）