SGS-LTER Earthwatch Project - Nitrogen and Carbon in Native, Abandoned and Cultivated Fields in eastern Colorado, USA 1991

This data package was produced by researchers working on the Shortgrass Steppe Long Term Ecological Research (SGS-LTER) Project, administered at Colorado State University. Long-term datasets and background information (proposals, reports, photographs, etc.) on the SGS-LTER project are contained in a comprehensive project collection within the Digital Collections of Colorado (http://digitool.library.colostate.edu/R/?func=collections&collection_id=3429). The data table and associated metadata document, which is generated in Ecological Metadata Language, may be available through other repositories serving the ecological research community and represent components of the larger SGS-LTER project collection.
Our objective in this study was to evaluate effects of land use on in situ net N mineralization in shortgrass steppe by comparing native and abandoned fields and cultivated fields, and by comparing soil under and between plants within native and abandoned fields. We also compared mineralization patterns between in situ and laboratory incubations to evaluate the role of environmental restrictions in determining N supply across management treatments and microsites. Additional information and referenced materials can be found: http://hdl.handle.net/10217/82140

Resources in this dataset:
Resource Title: Website Pointer to html file.
File Name: Web Page, url: https://portal.edirepository.org/nis/mapbrowse?scope=knb-lter-sgs&identifier=101
Webpage with information and links to data files for download

本数据包由开展短草草原长期生态研究（Shortgrass Steppe Long Term Ecological Research, SGS-LTER）项目的研究人员编制，该项目由科罗拉多州立大学统筹管理。SGS-LTER项目的长期数据集及相关背景资料（含研究方案、报告、影像资料等）均收录于科罗拉多数字馆藏（Digital Collections of Colorado）的完整项目馆藏中，访问地址为：http://digitool.library.colostate.edu/R/?func=collections&collection_id=3429。本数据集包含的数据表与以生态元数据语言（Ecological Metadata Language, EML）生成的关联元数据文档，亦可通过其他服务于生态研究共同体的仓储平台获取，属于SGS-LTER项目整体馆藏的组成部分。

本研究的核心目标为：通过对比原生草原、撂荒地与耕地的土壤情况，以及原生草原和撂荒地内植株下方与植株间的微生境土壤，评估土地利用方式对短草草原原位净氮矿化作用的影响；同时对比原位培养与实验室培养的矿化模式，探究环境限制因子在不同管理措施与微生境下对氮素供应的调控机制。更多相关信息及参考资料可通过以下链接获取：http://hdl.handle.net/10217/82140

本数据集包含的资源如下：
资源标题：指向HTML文件的网站指针
文件名：网页，访问地址：https://portal.edirepository.org/nis/mapbrowse?scope=knb-lter-sgs&identifier=101
该网页包含数据集相关信息与数据文件下载链接。