The development of Hani peatland in the Changbai mountains (NE China) and its response to the variations of the East Asian
The development of Hani peatland in the Changbai mountains (NE China) and its response to the variations of the East Asian
复制标题
长白山哈尼泥炭地的发育及其对东亚气候变化的响应
DOI：
--
复制
发表时间：
2019
影响因子：
9.8
通讯作者：
廖婉约
中科院分区：
文献类型：
--
作者：
张明明;卜兆君;姜明;王升忠;刘莎莎;陈旭;郝佳宁;廖婉约
过去的生态系统对气候变化的反应使我们有可能看到生态系统对气候强迫状态变化的敏感性。为了验证长白山泥炭地发育对东亚夏季风(EASM)变化的响应这一假设，根据泥炭的基本年龄，研究了哈尼泥炭地的发育历史。可以认为，哈尼泥炭地的发展是一种沼泽化。北部地区开发启动13685卡。年BP，而南部地区启动了7705卡。YR BP。此外，哈尼泥炭地的水分变化和发育可分为三个阶段。从16卡到7卡。由于海平面降低和西太平洋副热带高压(WPSH)的南移，导致哈尼泥炭地水分增加，从而导致东亚夏季风的增加。泥炭逐渐在北方地区建立起来。从7卡到2卡。BP，相对海平面的升高和西太平洋高压的北移导致了最大的东亚夏季风。东亚夏季风和东北季风(NEM)是哈尼泥炭地水分最大的季节。在这一时期，北部和南部地区都被泥炭覆盖。从2卡路里开始。BP，东亚夏季风的减少可能与北半球夏季日照强度和ENSO强度的季节性减少有关。因此，东亚夏季风的减少导致了哈尼泥炭地水分的减少。泥炭在北部和南部地区进一步积累。这项研究将有助于了解中国东北地区未来东亚夏季风的行为以及类似泥炭地对持续和未来气候变化的响应。
The past ecosystem responses to climate variability makes it possible to view the sensitivity of ecosystems to climate-forced state shifts. To test the hypothesis that the development of peatland in the Changbai Mountains responds to the variability of the East Asian summer monsoon (EASM), the developmental history of the Hani peatland was investigated based on peat basal ages. It can be concluded that the development of Hani peatland is the paludification. The development of the northern region started 13,685 cal. yr BP, while that of the southern region was initiated 7705 cal. yr BP. In addition, the moisture changes and development of the Hani peatland can be divided into three periods. From 16 to 7 ka cal. BP, the increase in the EASM was induced by the lower sea level and southward displacement of the Western Pacific Subtropical High (WPSH), resulting in increasing moisture in the Hani peatland. Peat was gradually established in the northern region. From 7 to 2 ka cal. BP, the increased relative sea level and northward displacement of the WPSH induced the maximum EASM. The EASM and Northeast Monsoon (NEM) induced the maximum moisture in the Hani peatland. Both the northern and southern regions.were covered with peat during this period. Since 2 ka cal. BP, the decreasing EASM might be related to the seasonal decrease in the Northern Hemisphere summer insolation and ENSO intensity. Thus, the decreasing EASM induced the decrease in the moisture in the Hani peatland. Peat further accumulated in both the northern and southern regions. This study will help to understand the future EASM behavior in NE China and the development of similar peatlands in response to ongoing and future climatic change.