SGS-LTER Historical LTER Soil water - neutron probe: field data (1983-1992) across topography on the Central Plains Experimental Range, Nunn, Colorado, USA, ARS Study Number 10

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. Long-term (1985-1992) dynamics and spatial
variations in soil water below the evaporative
zone were evaluated for a shortgrass steppe with a
low and variable precipitation regime. Each of
sandy loam, clay loam, and two sandy clay loam
sites compromised a toposequence with upland,
midslope, and lowland positions. Soil water was
monitored at 15cm intervals providing estimates
covering 22.5 to 97.5 cm depths. Soil water
throughout the profile was highest in the clay
loam and lowest in the sandy loam. However, stored
soil water did not vary systematically among slope
positions. Additional information and referenced materials can be found:
http://hdl.handle.net/10217/82912

本数据包由参与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负责管理。SGS-LTER项目的长期数据集及相关背景资料（含项目建议书、研究报告、影像资料等）均收录于科罗拉多州数字馆藏（Digital Collections of Colorado）的综合项目馆藏中，馆藏访问链接为：http://digitool.library.colostate.edu/R/?func=collections&collection_id=3429。本数据集附带的元数据文档采用生态元数据语言（Ecological Metadata Language）编写，该数据表与元数据文档可通过服务于生态研究共同体的其他仓储平台获取，二者均属于SGS-LTER综合项目馆藏的组成部分。本研究针对降水稀少且波动较大的短草草原生态系统，分析了1985年至1992年期间蒸发带以下土壤水分的长期动态与空间变异特征。研究共设置砂质壤土、黏壤土及两种砂质黏壤土4类样地，每类样地均包含上坡、中坡与下坡三种坡位，形成完整的地形序列。以15cm为监测间隔，对22.5cm至97.5cm深度范围内的土壤水分进行了测定。剖面整体土壤含水量以黏壤土样地最高，砂质壤土样地最低；但土壤储水量并未随坡位呈现系统性变化规律。更多相关信息与参考资料可通过以下链接获取：http://hdl.handle.net/10217/82912