Changes in the Essential Oil Constituents of Hippophae neurocarpa during Storage INVESTIGATION ON HIPPOPHAE THIBETANA SCHLECHTEND AND H.NEUROCARPA IN QILIAN MOUNTAIN AREA Genetic diversity and genetic structure of the northern margin populations of Hippophae neurocarpa Phylogeography of Hippophae neurocarpa (Elaeagnaceae) inferred from the chloroplast DNA trnL-F sequence variation Characteristics of wind pollination in a natural population of Hippophae neurocarpa S.W.Liu et T.N.He (Elaeagnaceae)