Fig.4. Comparison of multiple proxies results in ZBT section which is located in the desert-loess transition zone,North China MS, grain size, TOC, and δ13CTOC are cited from reference [73]. Leaf wax n-alkanes δD and χarm/SIRM are Liang Chenghong, Thesis of Master Degree, Nanjing University (2020). The probability of sand dune stabilization is cited from reference [74]