坡面水流使坡地土壤厚薄不均，或形成异源剖面，并可使埋藏土壤因冲刷而出露。
Water flow on slope makes the soil depth uneven at different places, forms the polygenetic soil profiles, and exposes the buried soils by erosion.
结果表明在6个月后土壤埋藏的PPC膜比沉浸在缓冲溶液中的膜质量损失增加得更慢。
The results showed that the weight loss of soil buried PPC films increased more Slowly than that immersed in the buffer solution after 6-month exposure.
吸水实验也同样显示在缓冲溶液中的PPC膜比土壤埋藏测试中吸水性更强。
Water sorption measurement also revealed that the PPC membranes immersed in buffer solution were more hydrophilic than those in soil burial tests.
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