本文選題：生態(tài)位適宜度 + 敏感性�。� 參考：《中國農(nóng)業(yè)大學學報》2017年10期

【摘要】：為對崩崗的其敏感性進行有效評價,在對影響崩崗發(fā)生的空間因素進行識別的基礎上,應用生態(tài)位適宜度模型構建崩崗發(fā)生敏感性的評價方法,并對福建省安溪縣的小流域進行實證研究。結果表明:各敏感性等級中現(xiàn)有崩崗的發(fā)生頻率和分布比率分別為0.31%、1%、1.94%和3.67%與4.55%、14.39%、28.03%和53.03%,可以看出這2個值均隨崩崗發(fā)生敏感性等級的提升呈階梯性增加,說明該評價方法科學合理;對崩崗發(fā)生敏感性貢獻較大的空間因子為相對高差、粘粒含量和NDVI。由此提出防范崩崗發(fā)生的相關建議:對于敏感性較高的區(qū)域需要增加植被、縮小地形落差,對于敏感性較低的區(qū)域要嚴禁不合理的開山以及破壞植被的行為。
[Abstract]:In order to effectively evaluate the sensitivity of collapse, based on the identification of spatial factors affecting the occurrence of collapse, the niche suitability model was used to construct a method for evaluating the sensitivity of collapse. And carries on the demonstration research to the small watershed of Anxi County, Fujian Province. The results showed that the frequency and distribution ratio of the current collapse were 0.31% and 3.67%, respectively, and 4.555.35% and 14.39%, 28.03% and 53.03, respectively. It can be seen that the two values increase step by step with the improvement of the sensitivity grade of the collapse. This indicates that the evaluation method is scientific and reasonable. The relative height difference, clay content and NDVI were the most important spatial factors contributing to the sensitivity to the occurrence of caving. Therefore, some suggestions are put forward to prevent the occurrence of collapse: for the highly sensitive areas, the vegetation should be increased, the topographic drop should be reduced, and the unreasonable mountain opening and vegetation destruction should be strictly prohibited for the less sensitive areas.
【作者單位】： 福建農(nóng)林大學資源與環(huán)境學院;福建省土壤環(huán)境健康與調(diào)控重點實驗室;
【基金】：國家自然科學基金項目(41601557;41571272) 國家科技支撐計劃項目(2014BAD15B0303)
【分類號】：S157

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