Climate and environment reconstruction during the Medieval Warm Period in Lop Nur of Xinjiang, China

We made multi-proxy analysis of C-14, grain size, microfossils, plant seeds, and geochemical elements on samples from a profile in the central West Lake of Lop Nur. The grain size suggests relatively stable sedimentary environment around the Medieval Warm Period (MWP) with weak storm effect, which is followed by frequent strong storm events. Abundant microfossils and plant seeds in this stage indicate a warm and humid fresh to brackish lake environment. C, N, and stable elements are high in content in the sediments while Rb/Sr, Ba/Sr, and Ti/Sr are in a steady low level. In addition, plenty of red willows lived here prior to about 700 a B.P., indicating a favorable environmental condition. The results indicate that the environment in Lop Nur and its west bank turned to be favorable at about 2200 a B.P., where the Loulan Culture began to thrive. Then the climate and environment came to be in the good condition in the Tang and Song Dynasties, when the storm effect became weaker, rainfall increased and the salty lake water turned to be brackish to fresh lake water. Hence, limnic biomass increased with higher species diversity

Application of Tamarix Cone Age Layer in Studying on Environmental Change of Arid Zone *

Abstract: Tamarix cone is a kind of vegetation cones distributing in arid zone, in which there is a special internal structure consisting of the sand layer accumulated in spring and summer, and the layer of dead twigs and leaves accumulated in fall and winter form an annual deposit layer. This layer is called tamarix cone age layer. It can be utilized to estimate the age of sedimentary veins, and rebuild the sequence of environmental change

Additional file 3: Table S3. of Transcriptomic analyses reveal molecular mechanisms underlying growth heterosis and weakness of rubber tree seedlings

Gene action models in BT 3410-parent triad. (XLSX 478 kb

Additional file 2: Table S2. of Transcriptomic analyses reveal molecular mechanisms underlying growth heterosis and weakness of rubber tree seedlings

Seedling girth and height of five rubber tree varieties. (XLSX 8 kb