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Expanded AI Model with Global Data Enhances Earth Science Applications（图）
Prithvi Geospatial foundation model Data set Model training
2024/12/6
NASA, IBM, and Forschungszentrum Jülich have released an expanded version of the open-source Prithvi Geospatial artificial intelligence (AI) foundation model to support a broader range of geographical...
中国科学院地理科学与资源研究所沈镭、李德龙等在Global Change Biology发表论文揭示植被响应干旱时间尺度的长期变化趋势（图）
沈镭 李德龙 植被响应 干旱时间 尺度 演变 气候
2024/2/26
干旱是造成植被死亡的主要驱动因素之一。在未来气候变化下干旱的强度、持续时间和频率会进一步增加，从而导致更高的森林死亡。目前的植被-干旱耦合研究很大程度上被忽视了植被响应干旱的最佳时间尺度（反映植被对干旱敏感性的一个关键指标），要么考虑了干旱时间尺度但忽略了干旱尺度的时间演变趋势，或考虑了植被-干旱敏感性的时间演变趋势而未能考虑干旱时间尺度的影响。在考虑到过去三十年植被对干旱的最佳响应时间后，植被对...
植被物候是生态系统响应气候变化的敏感指标。在全球气候变化背景下，植被物候变化会影响生态系统碳循环及水热平衡过程。作为世界上海拔最高的高原，寒冷干旱的青藏高原植被物候是受温度还是水分主导仍然存在争议。青藏高原有大面积的沼泽湿地分布，沼泽相对充裕的水分条件为进一步揭示这一问题提供了理想的条件。明确青藏高原沼泽植被物候时空变化及对气候变化响应机制，能为预测区域碳循环、揭示植被与气候变化关系提供科学依据。...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Global strong solutions to the two-dimensional radially symmetric compressible MHD
二维径向对称 可压缩 磁流体动力学 全局强解
2023/12/11
In this talk, I will present our recent result the 2D radially symmetric compressible MHD with density-dependent viscosity. Under the condition of beta>1, we prove the global existence of the radially...
由于气温升高和降水变化，干旱和半干旱生态系统的干旱加剧，给区域环境、水资源和农业都带来了巨大影响。近些年来，位于干旱和半干旱区的蒙古高原（MP）正在经历着严重的干旱，易发生荒漠化和土地退化等问题。
了解物种的种群趋势和分布范围动态对于全球物种保护至关重要。自人类世以来，随着人类活动强度的持续升级，全球物种遭受了栖息地的急剧丧失和分布范围的缩小。由于大部分原栖息地因人类活动出现各种方式的退化，动物会迁移到新的栖息地以获得更大的生存机会。这种动态的种群分布范围对于物种的生存至关重要，与种群灭绝的概率直接相关。因此，了解种群分布动态变化的机制并识别驱动因素对于预测和指导种群的保护至关重要。
浙江师范大学生命科学学院倪健课题组在Global Ecology and Conservation发表重要研究成果（图）
倪健 Global Ecology and Conservation 气候变化 生态系统
2023/12/28
2023年5月26日，生命科学学院倪健课题组在《Global Ecology and Conservation》在线发表了题为《Adjusting the protected areas on the Tibetan Plateau under changing climate》的研究论文。《Global Ecology and Conservation》是生态学与保护生物学领域的重要国际期刊之一...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Global stability of the Minkowski spacetime for the Einstein-Vlasov system
爱因斯坦-弗拉索夫系统 闵可夫斯基时空 全球稳定性
2023/4/21
In this talk, we discuss the global stability of the Minkowski spacetime in the wave coordinates system for the massive Einstein-Vlasov system. In particular, compared with previous results by Lindbla...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Global and Local Convergence-Rate Analysis of an Inexact Newton Augmented Lagrangian Method for Zero-One Composite Optimization
零一复合优化 不精确 牛顿增强拉格朗日方法 收敛率分析
2023/4/14
Zero-One Composite Optimization (0/1-COP) is a prototype of nonsmooth, non- convex optimization problems and it has attracted much attention recently. Augmented Lagrangian Method (ALM) has stood out a...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Global quasineutral Euler limit for the Vlasov-Poisson-Landau system with rarefaction waves
稀薄波 弗拉索夫-泊松-朗道系统 准中性 欧拉极限
2023/4/24
The formal limit of the one-dimensional Vlasov-Poisson-Landau (VPL) system in the combined small Knudsen and quasineutral regimes gives the compressible Euler system. In the talk I will present a rece...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Global unique solutions for the inhomogeneous Navier-Stokes equation with only bounded density, in critical regularity spaces
临界正则性空间 界密度 非齐次 纳维-斯托克斯方程 全局唯一解
2023/4/25
Our work is to prove the global existence and uniqueness of solutions to the inhomogeneous incompressible Navier-Stokes system in the case where the initial density $\rho_0$ is discontinuous and the i...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：On varieties of general type with many global forms
全局形式 一般类型 品种
2023/5/6
We expect that the study of pluricanonical systems of varieties of general type with many global forms can be reduced to the study of pluricanonical systems of varieties of lower dimensions. We show t...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Reevaluation of the carbon emissions embodied in global value chains based on an inter-country input-output model with multinational enterprises
跨国企业 国家间 投入产出模式 全球价值链 碳排放
2023/5/9
Multinational enterprises actively participate in global production networks. However, the current global value chain accounting framework fails to consider the emissions originating from the producti...
海南大学生态与环境学院胡中民教授在Global Change Biology发表研究论文（图）
海南大学生态与环境学院 胡中民 Global Change Biology 全球气候变化 陆地生态系统
2022/11/23
近日，海南大学生态与环境学院胡中民教授在全球变化领域顶级期刊 Global Change Biology 发表题为“The global decline in the sensitivity of vegetation productivity to precipitation from 2001-2018”的研究论文(https://doi.org/10.1111/gcb.16403)。该论文的...
2022年7月28号，浙江大学生命科学学院黄建国教授团队在生态学领域顶级期刊Global Change Biology上发表研究论文“Climate warming leads to advanced fruit development period of temperate woody species but divergent changes in its length”，该研究阐明温带木本植...