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27篇 您的检索式:作者名="Mats OLSSON"
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1运用卫星数据和来自国家森林清查的野外数据进行全国森林变量估计显示文摘瑞典约有55%的土地面积被森林所覆盖。目前,瑞典的森林覆盖没有统一的和地理学上明晰的描述。现存的独立性数据源是Landsat TM和SPOT HRV卫星数据、地图蒙片(map mask)和森林清查样地。它们在一起,使森林变量(如材积和林分年龄)的计算机估计成为可能。这些估计的精确度在像素水平上是低的,但在林分水平上较高。在规划木材资源应如何加以利用或出于监测目的时,这类基于栅格的森林数据对政府来说是有帮助的。本文描述了以有效成本建立森林变量估计全国数据库的生成流程。我们在林分水平上评价了瑞典西南部某地森林变量估计的精确度。结果表明,总材积估计的整体均方根误差为33%,年龄估计的整体均方根误差为23%。Heather Reese Mats Nilsson Tina Granqvist Pahlén Olle Hagner Steve Joyce Ulf Tingelf Mikael Egberth Hkan Olsson 王胜 2003AMBIO-人类环境杂志2003,32,8:4
2水生生态系统的富营养化和污染物显示文摘富营养化和长效污染物是欧洲海洋和淡水生态系统存在的主要环境问题。由于它们趋于共同产生,所以富营养化和污染物之间就有了相互作用,因而无法根据它们各自独立的作用过程来预测它们共同导致的环境影响。为了预测防治措施(改变有机质、营养物和污染物的输入)的效果,认识改变生物可利用性和污染物的迁移转化的机制是非常重要的。环境风险取决于污染物的种类形成和它们与媒介及其物质间的联系,并以此影响暴露程度。而且,风险也将取决于物质的流动性和它们在食物链中的路径。1995年,瑞典环境保护局发起了一项为期5年的研究项目'富营养化和污染物之间的相互作用(EUCON)'。前期准备的有关背景资料罗列了大量相关的问题和假设。在这些资料的基础上,项目开始启动,主要致力于海洋环境研究,重点集中在波罗的海及湖泊的富营养化和污染物(持续性有机化合物和微量金属)的相互作用上。本文总结了该项目研究的现状、前提和重点部分,强调了研究结果的应用及其意义。Jens Skei Per Larsson Rutger Rosenberg Per Jonsson Mats Olsson Dag Broman 鲁春霞 2000AMBIO-人类环境杂志2000,29,4:2
3Phosphatases; origin, characteristics and function in lakes显示文摘Mats Jansson H?kan Olsson Kurt Pettersson 1988Hydrobiologia1988,,1:1
4Emergency Voltage Control Using Search and Predictive Control 显示文摘Mats Larsson David J Hill Gustaf Olsson 2002Electrical Power and Energy Systems (S0142-0615)2002,24,2:1
5Total Contents and Sequential Extraction of Heavy Metals in Soils Irrigated with Wastewater, Akaki, Ethiopia显示文摘Daniel Fitamo Fisseha Itana Mats Olsson 2007Environmental Management2007,,2:1
6Emergency voltage control using search and predictive control 显示文摘Larsson Mats Hill David J Olsson Gustaf 2002International Journal of Electrical Power and Energy Systems2002,24,:1
7Emergency voltage control using search and predictive control显示文摘Mats Larsson David J. Hill Gustaf Olsson 2002International Journal of Electrical Power and Energy Systems2002,,2:1
8Emergency voltage control using search and predictive control显示文摘Mats Larsson David J Hill Gustaf Olsson 2002Electrical Power and Energy Systems2002,24,:1
9Dense single-phase β-sialon ceramics by glass-encapsulated hot isostatic pressing显示文摘Thommy Ekstr?m P. O. K?ll Mats Nygren P. O. Olsson 1989Journal of Materials Science1989,,5:1
10Emergency voltage control using search and predictive control 显示文摘Mats Larsson David J Hill Gustaf Olsson 2002E- lectrical Power and Energy Systems2002,24,2:1
11Activation of es- trogen receptor alpha disrupts differentiation of the reproductive or- gans in chicken embryos 显示文摘MAT/'SSON A OLSSON J A BRUNSTRt)M B 2011Gen Comp Endoerinol2011,172,2:1
12Specimen Banking a Planning in Advance显示文摘Mats Olsson Anders Bignert 1997Chemosphere1997,34,910:1
13Microsatellites in the Sand Lizard (Lacerta agilis): Description, Variation, Inheritance, and Applicability显示文摘Annica Gullberg H?kan Tegelstr?m Mats Olsson 1997Biochemical Genetics (-)1997,,7:1
14Is sperm really so cheap? Costs of reproduction in male adders, Vipera berus显示文摘Olsson Mats Madsen Thomas Shine Richard 1997Proceedings of the Royal Society B: Biological Sciences1997,,1380:1
15Low genetic diversity threatens imminent extinction for the Hungarian meadow viper ( Vipera ursinii rakosiensis )显示文摘Beáta újvári Thomas Madsen Tatiana Kotenko Mats Olsson Richard Shine H?kan Wittzell 2002Biological Conservation2002,,1:1
16Comparison of soil attributes under Cupressus lusitanica and Eucalyptus saligna established on abandoned farmlands with continuously cropped farmlands and natural forest in Ethiopia显示文摘Mulugeta Lemenih Mats Olsson Erik Karltun 2004Forest Ecology and Management2004,,1:1
17Phosphatases; origin, characteristics and function in lakes显示文摘Mats Jansson H?kan Olsson Kurt Pettersson 1988Hydrobiologia1988,,1:1
18Nutrient composition and short-term release from Croton macrostachyus Del. and Millettia ferruginea (Hochst.) Baker leaves显示文摘Jiregna Gindaba Mats Olsson Fisseha Itanna 2004Biology and Fertility of Soils2004,,6:1
19Phosphatases; origin, characteristics and function in lakes显示文摘Mats Jansson H?kan Olsson Kurt Pettersson 1988Hydrobiologia1988,,1:1
20Assessing soil chemical and physical property responses to deforestation and subsequent cultivation in smallholders farming system in Ethiopia显示文摘Mulugeta Lemenih Erik Karltun Mats Olsson 2004Agriculture, Ecosystems and Environment2004,,1:1
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