New international publications
01.09.2018
Two new papers of the laboratory were published recently in the International Journal of Biometeorology. They contain results of the research project 16-44-190140 "Investigation and reconstruction of the main crops productivity dynamics in the Khakassia Republic with dendroclimatic methods".The first paper "Climatically driven yield variability of major crops in Khakassia (South Siberia)" provides a detailed analysis of the climatic effect on the yield of wheat, barley and oats in the territory of the Republic of Khakassia. A significant climatic response is observed from May to July. In the northern part of Khakassia agriculture is rain-fed, and influence of both temperature and precipitation is significant In the center of the republic presence of irrigation and hydrological network leads to the prevailing of temperature influence. In the foothills of the southern part of the region the climatic signal is the weakest.
The second paper "Past crops yield dynamics reconstruction from tree-ring chronologies in the forest-steppe zone based on low- and high-frequency components" is devoted to the long-term reconstruction of yield using the radial growth of Scots pine and Siberian larch. The radial increment of woody plants in the forest-steppe zone has a similarity in its dynamics with that of agricultural crops, due to their general dependence on the hydrothermal regime of the territory. However, differences in the life form (perennial woody plants and annual herbaceous ones) and anthropogenic influence complicate the task of their comparison. Therefore, for the reconstruction of yield based on tree-ring chronologies, an original approach was used: in the dynamics of these indicators of plant productivity (and environmental factors affecting them), high-frequency and low-frequency components were singled out and separately considered. The reconstruction was then carried out for each component separately, followed by their combination. Verification of reconstruction models based on historical documents, instrumental climatic observations and data from variety test stations confirmed its quality.
Full texts of the papers can be found here:
https://link.springer.com/article/10.1007%2Fs00484-017-1496-9, https://doi.org/10.1007/s00484-017-1496-9
https://link.springer.com/article/10.1007%2Fs00484-017-1488-9, https://doi.org/10.1007/s00484-017-1488-9.
