Demonstrating the potential of an annually-laminated lake record to evaluate landscape response to climate and anthropogenic forcing during the Holoce

我们对全新世气候复杂性的理解是由人类与环境之间的相互作用，以及缺乏高分辨率年表的景观响应和人类活动的代理记录。在约会的改进，以促进整合的反应，在代理记录的压力。湖泊沉积物是景观敏感性的宝贵记录，记录了气候变化、人类活动和景观演变之间复杂的相互作用。Diss Mere（英国诺福克）遗址提供了一个独特的机会，以提高我们对全新世英国的了解，因为它的年度分层沉积物和高沉积速率的高年代分辨率。这个博士学位是围绕两个关键方法建立的。首先，对高分辨率Diss Mere记录进行隐火山灰分析，这些记录充当精确的地层等时线，将沉积物与日历时间联系起来。因此，这份年代久远的迪斯记录为古气候、古环境和考古学研究提供了理想的试验场。为了实现这一点，第二个关键方法使用高分辨率的孢粉学数据，结合现有的代理数据。这是适用于关键的时间片，沿着梯度的人类活动，从中石器时代到罗马时期，与快速的气候转变：8.2ka BP事件，2.8 ka BP事件，罗马温暖期。

Our understanding of Holocene climatic complexity is compounded by the interactions between humans and environment, and a lack of high-resolution chronologies for proxy records of landscape response and human activity. Improvements in dating are sought to facilitate the integration of responses in proxy records to stressors. Lake sediments constitute valuable records of landscape sensitivity, documenting the complex interplay between climate change, human activity, and landscape evolution. The site of Diss Mere (Norfolk, UK), offers a unique opportunity to improve our understanding of Holocene Britain owing to the high chronological resolution of its annually-laminated sediments and high sedimentation rates. This PhD is built around two key approaches. Firstly, cryptotephra analyses of the highly resolved Diss Mere record, which act as precise, stratigraphic isochrones, tying the sediments to calendar time. The well-dated, Diss record, thus, provides an ideal testing ground for palaeoclimatic, palaeoenvironmental, and archaeological studies. To achieve this, the second key approach uses high-resolution palynological data, combined with existing proxy data. This is applied to key time slices, along a gradient of human activity, from the Mesolithic to the Roman period, coinciding with rapid climatic transitions: the 8.2ka BP event, the 2.8 ka BP event, and the Roman warm period.