检索结果-南通市图书馆

Growth and competition among understory plants varies with reclamation soil and fertilization

Ecological Processes 2018年第1期7卷 116-123页

作者： jennifer buss Kyle Stratechuk Bradley D.Pinno Department of Renewable Resources University of AlbertaEdmontonAlbertaCanada

Introduction:Following oil sands mining in Alberta,Canada,the main land management goal is to establish a functioning boreal forest ecosystem,including the understory plant *** of the challenges with restoring the understory is the presence of non-native species that compete with desirable native species for *** a greenhouse experiment,we studied the growth of two native understory species(Galium boreale and Vicia americana)and a non-native invasive species(Matricaria perforata)grown with either intra-or interspecific neighbors across three common land reclamation soils and a nitrogen fertilizer ***:When grown by itself,*** aboveground biomass did not differ among soil or fertilizer treatments,likely due to its ability to fix *** of *** was directly related to soil nitrogen,and it had the greatest increase in biomass with *** and biomass of *** was less than the other species,and it had the highest mortality in the nitrogen-poor *** grown together,the proportional biomass of *** and *** varied with soil treatment such that *** was dominant in the high-nitrogen forest floormineral mix treatment while *** was dominant in the low-nitrogen peat-mineral ***:Operationally,care should be taken when applying fertilizer to reclamation areas,as it may have an unwanted positive effect on growth for undesirable non-native plants at the expense of native *** terms of seed mixtures,*** may be a good option for low inorganic nitrogen resource soils and *** for high nitrogen resource soils.

关键词： Matricaria perforata Galium boreale Vicia americana Forest floor-mineral mix Peat-mineral mix Oil sands reclamation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ecosystem service delivery in Karst landscapes： anthropogenic perturbation and recovery

引用

Acta Geochimica 2017年第3期36卷 416-420页

作者： Timothy Quine Dali Guo Sophie M.Green Chenglong Tu Iain Hartley Xinyu Zhang jennifer Dungait Xuefa Wen Zhaoliang Song Hongyan Liu Heather buss Timothy Barrows Richard Evershed Penny Johnes Jeroen Meersmans Geography College of Life and Environmental SciencesUniversity of Exeter Rennes Drive Exeter EX4 4RJ UK Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 People's Republic of China State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550081 Guizhou Province People's Republic of China Rothamsted Research - North Wyke Okehampton Devon EX20 2SB UK Institute of the Surface-Earth System Science Research Tianjin University Tianjin 300072 People's Republic of China College of Urban and Environmental Sciences Peking University Beijing 100871 People's Republic of China School of Earth Sciences Wills Memorial Building Queens Road Clifton BS8 1RJ UK School of Chemistry University of Bristol Cantock's Close Clifton Bristol BS8 1TS UK School of Geographical Sciences University of BristolUniversity Road Clifton Bristol BS8 1SS UK Cranfield Soil and Agrifood Institute Cranfield UniversityCranfield Bedfordshire MK43 0AL UK

Covering extensive parts of China, Karst landscapes are exceptional because rapid and intensive land use change has caused severe ecosystem degradation within only the last 50 years. The twentieth century intensification in food production through agriculture has led to a rapid deterioration of soil quality, evidenced in reduced crop production and rapid loss of soil. In many areas, a tipping point appears to have been passed as basement rock is exposed and 'rocky desertification' dominates. Through the establishment of the "Soil processes and ecological services in the karst critical zone of SW China"(SPECTRA)Critical Zone Observatory(CZO) we will endevaour to understand the fundmental processes involved in soil production and erosion, and investigate the integrated geophysical-geochemical-ecological responses of the CZ to perturbations. The CZ spans a gradient from undisturbed natural vegetation through human perturbed *** seek to understand the importance of heterogeneity insurface and below-ground morphology and flow pathways in determining the spatial distribution of key stocks(soil,C, vegetation, etc.) and their control on ecosystem service delivery. We will assess the extent to which the highly heterogeneous critical zone resources can be restored to enable sustainable delivery of ecosystem services. This paper presents the CZO design and initial assessment of soil and soil organic carbon stocks and evidence for their stability based on caesium-137(^(137) Cs) data.

关键词： Soil degradation Ecosystem services Caesium-137 Karst,China

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：