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This study assessed the potential impacts of climate and land‐use change on soil fungal diversity across four North American biomes. We found that climate change typically caused both diversity losses and gains, particularly in coniferous forests and among arbuscular mycorrhizal fungi, whereas land‐use change mainly reduced diversity, especially in ...
Wenqi Luo +5 more
wiley +1 more source
The Concentration and Carbon Isotope Characteristics of Dissolved Inorganic Carbon in Jiulong River Tributaries and Estuary [PDF]
碳是重要的生源要素,以各种形态贯穿生命全过程;碳循环是生态系统最重要的物质循环之一。本研究应用稳定同位素技术,以九龙江干流西溪、北溪和河口区域为研究对象,对西溪、北溪及九龙江河口区进行了一个水文年的季节性采样调查,分析了表层水体中溶解无机碳含量及其碳稳定同位素组成(δ13CDIC)、悬浮颗粒物有机碳氮含量及稳定同位素组成(δ13CPOC、δ15NPON),并结合其它相关的水体理化参数对九龙江干流至河口区水体溶解无机碳和颗粒有机碳及其碳稳定同位素的时空变化规律及环境控制因素进行了初步探讨,得出以下结论 ...
梁翠翠
core
Read the free Plain Language Summary for this article on the Journal blog. Abstract In the Southwest Australian Biodiversity Hotspot, the greatest plant species diversity tends to occur on the most phosphorus (P)‐impoverished soils. Many plant species in this P‐impoverished environment release root carboxylates that mobilise soil P which is a more ...
Xue Meng Zhou +5 more
wiley +1 more source
Preliminary Studies on Status Evaluation and Suggestions of Persistent Organic Pollutants (POPs) Monitoring in Offshore China: Based on the Case Analysis of Typical Watershed-Bays in China and US [PDF]
本论文以典型半封闭海湾持久性有机污染物(POPs)等陆源污染监测与管理问题为切入点,首先开展了美国Narragansett湾流域-近海水体中POPs(包括PAHs、PBDEs、PCBs、OCPs)监测工作和源解析研究,据此完成了基于GIS的POPs与土地利用相关性及逐步多元线性回归分析。其次,以泉州湾陆源污染调查与控制研究为切入点,并通过较系统的监测方案调研,评估了我国近海POPs监测的主要问题。最后,通过开展各级海洋管理及一线监测人员及专家的问卷调查与分析 ...
赵雯璐
core
Background – Skin disease is a common complaint in veterinary medicine. Current models often use live animals. Epidermal organoids (keratinocytoids) are 3D miniature organs created in culture from single epidermal keratinocytes. These keratinocytoids can be used as an alternative to live animal studies to investigate epidermal structures and skin ...
Clinson C. Lui +5 more
wiley +1 more source
Gradient distributions of nitrogen and organic carbon in the soils from inland to tidal flat in the Yellow River Delta [PDF]
黄河三角洲是我国典型的通过黄河冲积泥沙填海造陆形成的近代沉积区。区域受到黄河冲积、沉积等自然过程和农业耕种熟化等人类活动的双重影响。本研究通过在黄河三角洲地区内陆到河口海湾不同距离采集典型土壤类型剖面发生层样品,探讨土壤有机碳、总氮等生源要素的空间分布规律,为阐明我国典型海岸带地区陆源碳、氮的输送及循环特征提供基础依据。研究结果表明,黄河三角洲内陆与河口地区呈现出完全不同的土壤碳、氮分布规律。表层土壤碳、氮含量在黄河沿岸及三角洲南部均表现出由陆向海逐级递减的空间分布特征 ...
李远 +4 more
core +1 more source
Nerd Harder: A Typology of Techno‐Legal Solutionist Logics in Child Online Safety Laws
ABSTRACT As jurisdictions worldwide grapple with regulating social media's effects on youth, US state legislatures have emerged as important laboratories for “techno‐legal solutionism”—the belief that complex social problems can be solved through legally mandated technical fixes.
Amanda Reid, Lorcan Neill, Evan Ringel
wiley +1 more source
Optical Properties and Controlling Factors of Dissolved Organic Matter in the Basin of Northern South China Sea and the Adjacent Kuroshio Region [PDF]
有色溶解有机物(CDOM)是海洋碳库的重要组成部分,在海洋真光层内发生的光化学、光生物学过程中扮演着重要的角色,同时也可用来示踪深海生物地球化学循环过程。南海是典型的大洋主控型边缘海,其北部海盆区通过吕宋海峡与邻近的西太平洋黑潮区进行着活跃的物质和能量交换,对整个南海及西太平洋碳的生物地球化学过程有着重要影响。但是,利用CDOM的光谱指纹特征来示踪两个海区碳循环过程的研究还未见报道。本文在搭建海水低浓度CDOM吸收光谱测试系统的基础上,结合三维荧光光谱测定与平行因子分析、主成分分析等手段 ...
王超
core
Read the free Plain Language Summary for this article on the Journal blog. Abstract While elevational patterns of soil bacterial and fungal communities in mountain ecosystems have been well documented, the assembly processes of soil archaeal and protistan communities, and their linkage with ecosystem multifunctionality (EMF), remain poorly understood ...
Bao‐Min Yao +14 more
wiley +1 more source
为了探讨塔克拉玛干沙漠腹地风沙流结构特征及尼龙网方格沙障对风沙流颗粒的分异作用,于2015年4月—2015年6月,选取裸沙地和沙障2种下垫面,利用集沙仪对地表风沙流进行观测,分析了尼龙网沙障对风沙流结构和沙粒粒径分布的分异过程。结果表明:(1)风沙流结构在裸沙地符合指数分布(y=321.025e-10.16x,R2=0.94),在沙障前部和中部分别表现出“象鼻”效应特征和近似于倒置的“象鼻”;沙障的设置,明显减少了近地面(0~42 cm)的输沙量。(2)在裸沙地 ...
黎小娟, 李, 丁新原
doaj

