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Popular Abstract in Chinese 北极和亚北极地区对全球气候变化影响尤为重要。目前，北极地区正面临着变暖速度高于全球平均的现状。全球大约有50%的土壤碳储存在高纬度地区的土壤里，这些土壤碳主要分布于冻土层和泥炭层中。冻土层的解冻会使原先被冻结的土壤碳加速分解，产生温室气体，从而对全球变暖形成一个强烈的正反馈。与此同时，气温的增加可能会很大程度地影响植被在这些地区的生长和分布。动态生态系统模型是一种非常强大的工具，被用来研究气候变化对生态系统的影响，并且可以量化生态系统对大气的反馈信息。然而这些模型通常只关注大气、地表植被和土壤之间的水和碳的纵向转移，从而忽略了其在模型空间单元中的横向移动。这样可能会导致模型对于水和碳平衡的计算不够准确和全面，尤其在气候敏感的高纬度极地地区，这种偏差可能会更大。 本论文旨在解决动态生态系统模型中的这个局限性问题。基于目前最先进的动态生态The Arctic and Subarctic regions are of particular importance to the global climate change and are now experiencing a climate warming that is higher than the global average. Around 50% of the global soil carbon is stored in high latitude soils, especially in permafrost and peatland soils. Permafrost thawing, speeding up the decomposition of previously frozen soil carbon, is expected to result in s

This thesis investigates the role of migration in international trade within the framework of behind-the-border trade barriers and firm behavior. In addition to the introduction, which provides a context to the analysis, it consists of four essays. The first essay, titled ‘Migration as Trade Facilitation? Investigating the Links Between International Trade and Migration,’ examines the cross-countr

En av de vanligaste frågorna som brukar ställas till astronomer är om det finns liv någon annanstans i universum. Vi har ännu inget enkelt svar. Framsteg mot ett svar på denna fråga görs lite i taget. Den här avhandlingen är ett av dessa steg.Min forskning är inriktad på atmosfärerna hos så kallade "ultra-hot Jupiters": planeter i Jupiters storlek som kretsar så nära sina stjärnor att de hettas upOne of the biggest questions people ask astronomers is whether life exists elsewhere in the universe. Unfortunately, we don’t yet have an answer. Instead, progress towards an answer comes in small, careful steps. This thesis is one of those steps.My research has focused on the atmospheres of "ultra-hot Jupiters": planets the size of Jupiter that orbit so close to their stars they are heated to tho

Title: Success factors for market expansion of Western born global firms entering China Author: Albin Björck Industrial Engineering and Management Lund University Faculty of Engineering Supervisor - LTH: Bertil I Nilsson Department of Industrial Management & Logistics Lund University Faculty of Engineering Supervisor - XXXXX: Rickard Mårtensson Head of APAC Development XXXXX Background: We

Future studies are methodological tools that have affected policy design over the past decades. In Peru, these tools have developed hand in hand with a cycle of institutional volatility in a context of socioeconomic and political turmoil. While the context has improved, the relevance of future studies in relation with policy design is still questionable. New approaches developed and implemented by

The language policies of three Swedish universities are examined as instances of language planning in local contexts. Although Sweden has the national Language Act of 2009 as well as a general Higher Education Ordinance (SFS 1993:100; SFS 2014:1096), language planning for higher education is left to the purview of individual institutions. Since language planning in local contexts often involves th

Background. Over five billion people worldwide lack access to safe and affordable surgery and anesthesia care when required. There is a critical unmet need for surgical care, especially in low-income and middle-income countries (LMICs). The shortage of surgical providers is one of the most influential barriers to receiving surgical care, and the maldistribution is aggravated by doctors emigrating

A global rules-based order is in flux amid intensifying United States (US)-China geopolitical competition for economic and technological advantage. Concerns about the economic and security risks of dependency on China increasingly shape economic and political decision-making in the West. This paper looks at various national responses to the rise of China in the sphere of scientific collaboration a

Abstract in UndeterminedResults from free-air CO(2) enrichment (FACE) experiments in temperate climates indicate that the response of forest net primary productivity (NPP) to elevated CO(2) might be highly conserved across a broad range of productivities. In this study, we show that the LPJ-GUESS dynamic vegetation model reproduces the magnitude of the NPP enhancement at temperate forest FACE expe

Popular Abstract in Swedish Framtida klimatförändringar påverkas till stor del på människans utsläpp av CO2, samt av klimat- och CO2-relaterade återkopplingar genom kolcykeln i både landbaserade ekosystem och hav. Landbaserade ekosystem tar för tillfället upp omkring 25% av de antropogena utsläppen av CO2 från förbränning av fossila bränslen och markanvändning, men att tillskriva vilka mekanismer The nature of future climate change will depend on anthropogenic emissions of CO2, as well as climate- and CO2-mediated feedbacks through carbon (C) cycling in both terrestrial ecosystems and oceans. Terrestrial ecosystems remove presently about 25% of the anthropogenic CO2 fossil-fuel and land-use change emissions, but to attribute which mechanisms cause this uptake, and the key regions where it

The term “the value of the child” was coined by economists in the context of demographic transition and fertility, emphasizing economic and cultural aspects. However, the scope of the value of the child was confined to a cost-benefit analysis. The “social value of the child” is a comprehensive concept that encompasses the economic, psychological, social, and cultural value of the child. Contextual

Humanitarian organisations are central actors in the mediation of humanitarian disasters as objects of public, political and moral concern. Consequently, if we want to understand this key dynamic of world politics we have to understand how aid organisations use media. But whereas extant knowledge about media and global humanitarianism focuses primarily on issues related to discourses and images of

Title: The Impact of the Pandemic and War on the State of Global Supply Chains Purpose: The purpose of the thesis is to outline the current state of global supply chains and global energy supply as a result of the Covid-19 pandemic as well as Russia-Ukraine war. Current energy and supply chain issues are explored and discussed based on existing theory on the topic. When the overall issues are cla

Phytoplankton are ectotherms and are thus directly influenced by temperature. They experience temporal variation in temperature which results in a selection pressure. Using the Adaptive Dynamics theory and an optimization method, we study phytoplankton thermal adaptation (more particulary the evolution of the optimal growth temperature) to temperature fluctuations. We use this method at the scale

A widespread and persistent drought plagued much of northern Mexico during the 1950’s Abrupt and Persistent Declines in Regional Precipitation Patterns: Societal Implications and Geographic Patterns Rachel Licker 199 Babbitt Rd. #2B Bedford Hills, NY 10507 USA Rachel.Licker.393@students.lu.se + 001 (608) 852-6374 Lund University Centre for Sustainability Studies in collaboration with Center for Su

https://www.lumes.lu.se/sites/lumes.lu.se/files/rachel_licker.pdf - 2026-09-02