玛纳斯河流域盐渍化灌区生态环境遥感监测研究

发布时间：2018-10-29 09:33

【摘要】：土壤盐渍化已成为全球性问题,给生态环境及农业生产带来严重的威胁。为了快速、准确评价土壤盐渍化给区域生态坏境带来的影响,该文提出了新的完全基于遥感数据的遥感生态指数(SSEI,Soil Salinization Ecology Index)来监测玛纳斯河流域盐渍化灌区生态环境变化。该指数利用主成分分析的方法耦合与土壤盐渍化相关的土壤盐度、地表反照率、植被覆盖度和土壤湿度四大地表参数,指数构建是数据本身性质所决定,不同于以往遥感与非遥感指数加权叠加易受人为影响。研究结果表明:耦合与盐渍化信息相关的各遥感指数得到的生态指数,能够对土壤盐渍化影响区域的生态环境进行快速、定量、客观的监测。将该指数应用到新疆玛纳斯河流域灌区,结果表明在近26年优和良等级生态环境面积增加了12.89%,这说明灌区生态环境有所改善。该研究对土壤盐渍化监测与评价具有一定参考意义。
[Abstract]:Soil salinization has become a global problem, which poses a serious threat to ecological environment and agricultural production. In order to evaluate the impact of soil salinization on regional ecological environment quickly and accurately, a new remote sensing ecological index (SSEI,) based on remote sensing data is proposed in this paper. Soil Salinization Ecology Index) is used to monitor the ecological environment change of salinized irrigation area in Manas River Basin. The index uses principal component analysis (PCA) to couple the soil salinity, surface albedo, vegetation coverage and soil moisture related to soil salinization. The index construction is determined by the nature of the data. Different from the previous remote sensing and non-remote sensing exponential weighted stacking is easy to be artificially affected. The results show that the ecological indices obtained by coupling the remote sensing indices related to salinization information can quickly, quantitatively and objectively monitor the ecological environment of soil salinization affected areas. The index was applied to irrigation area of Manas River basin in Xinjiang. The results showed that the area of ecological environment of superior and good grade increased by 12.89 in recent 26 years, which indicated that the ecological environment of irrigation area was improved. This study has some reference significance for soil salinization monitoring and evaluation.
【作者单位】：石河子大学理学院;石河子大学水利建筑工程学院;
【基金】：国家自然科学基金项目(41361073) 新疆研究生科研创新项目(XJGRI2015044)
【分类号】：S127;S156.4

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