树轮地貌学方法在坡面土壤侵蚀调查中的应用——以河北省环首都山地为例

通过对树根解剖法的综合分析,提出了基于全树龄的坡面土壤侵蚀调查方法。利用该方法,选择河北省涞源县、兴隆县两地作为典型调查点,对河北省环首都山地的坡面土壤侵蚀进行了调查,探讨了树龄分析法在不同地貌部位、不同岩性、不同树种条件下土壤侵蚀研究的可行性。结果表明,利用全树龄分析方法所取得的坡面水土流失数据与RUSLE模型具有一定的可比性,而且基于全树龄的树轮地貌学方法对研究区土壤侵蚀情况的时空变化特征具有更强的指示性和分辨率,实用性更高。

Application of Dendrogeomorphological Methods on Slope Soil Erosion——Case Studies in Hebei Mountains Around Beijing

Through comprehensive analyzing of the root anatomical methods,this paper puts forwards a method based on whole-tree age analyzing.By the whole-tree age analyzing based method,the rate of Hebei Mountain around Beijing was investigated,taking Laiyuan and Xinglong as a representative.Through investigating,the feasibility of whole-tree age analyzing based method on slope soil erosion under different geomorphology,lithology and tree species was explored.The results showed that the investigating date was in agreement with the RUSLE model.Besides,the whole-tree age analyzing based method has a higher indicative effect and resolution in the temporal and spatial variation of slope soil erosion research in Hebei.