Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Development is the top priority, and talent is the first resource. The 19th National Congress of the Communist Party of China proposed to implement a coordinated development strategy of regions and intensify measures to promote a new layout for the western development. Due to the influence of history, environment, humanities, and other factors, the economic and social development level of the eastern and western regions is quite different. The western region faces major challenges in attracting and retaining the talents. The lack of high-level scientific and technological talents has become a constraint to the economic and social sustainability of the western region, which seriously hampered their development. This study takes the young scientific and technological talents of the institutes of the Chinese Academy of Sciences in the western part of China as an example. Based on the questionnaires, a research on the development problems of the young scientific and technological talents in the western China institutes has been conducted, and the differences of the young scientific and technological talents in various disciplines/affiliations are analyzed. The development mechanism of the young talents in western China based on the regional resource characteristics is constructed, and the countermeasures and suggestions are proposed.
Subjects: Biology >> Ecology submitted time 2017-03-02
Abstract：摘要：土壤有机碳（SOC）含量及其δ13C 值的剖面分布对揭示 SOC 循环过程及其规律有重要意义。本研究以青藏高原东北缘疏勒河上游的不同高寒草地类型覆盖下的土壤剖面为研究对象，对高寒草原，草原化草甸和高寒草甸土壤的 SOC 含量，土壤 pH 值，碳氮比及其有机碳δ13C 值进行测定和分析。结果表明：1）高寒草甸土，草原化草甸土以及高寒草原土的 SOC 含量变化范围分别为 4.7-36.1 g·kg-1，2.4-21.7 g·kg-1以及 4.0-26.1 g·kg-1；3 种土壤的 SOC 含量均随土层深度增加而显著降低（P<0.05）；2）3 种土壤的δ13Csoc值均随着土壤剖面的加深呈现先增加再减少后稳定的格局，在 10-30cm 深度内，δ13Csoc达到极大值，随后逐渐减少，60cm 以下δ13Csoc值基本稳定；不同土壤剖面δ13Csoc值变化幅度不同，高寒草甸土的δ13Csoc值变幅最大。3）3种土壤的碳氮比值均随着土壤剖面深度增加而显著降低(P<0.01)，表层土壤的分解程度低于深层土壤，草原化草甸土的分解程度最高。
Peer Review Status:
Awaiting Review
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