Maintaining the stability and sustainable management of shrub plantations on the Loess Plateau
Caragana korshinskii (C. korshinskii) is a dominant shrub species in arid desert regions and has been widely introduced to the Loess Plateau due to its strong sand-binding and soil and water conserving function .
However, research on the radial growth characteristics and ecological response of C. korshinskii under different precipitation gradients is still insufficient.
Recently, a research team led by Professor Xiao Shengchun from the Northwest Institute of Eco-Environment and Resources of the Chinese Academy of Sciences (CAS) synthesized the maintenance of stability and sustainable management of shrub plantation forests in the western region of the Loess plateau.
Related results have been published in Frontiers in plant science April 8.
This study was based on tree ring width data from the shrub C. korshinskii Kom. In some natural forest and plantation sampling sites spanning different rainfall gradients (180–415 mm) on the Western Loess Plateau in China, researchers demonstrated its radial growth dynamics, mainly limiting factors and forest management .
They found that, compared to natural C. korshinskii in arid desert regions, C. korshinskii planted in arid and semi-arid regions of the Loess Plateau was more significantly affected by water stress during the growing season (from June to September)
Meanwhile, with increasing rainfall, the limitation of drought on the growth of planted C. korshinskii gradually diminished.
“In the context of climate change, regular management of branch coppice around age 12 will help alleviate the limitation of drought on the growth of planted C. korshinskii,” Professor Xiao said. “In addition, the initial planting density should be adapted to the local rainfall conditions.”
This study can contribute to maintaining the stability and sustainable management of western Loess Plateau forest plantations in the context of climate change.
Researchers reconstruct historical off-season rainfall in southeastern Tibetan Plateau
Cunwei Che et al, The radial growth and ecological response characteristics of Caragana korshinskii Kom. Under different precipitation gradients in Western Loess Plateau, China, Frontiers in plant science (2022). DOI: 10.3389/fpls.2022.862529
Provided by Chinese Academy of Sciences
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