SGS-LTER Historical LTER Soil water - neutron probe: field data (1984-1992) in Section 15, Sandy 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

本数据包由科罗拉多州立大学负责管理的短草草原长期生态研究（Shortgrass Steppe Long Term Ecological Research，简称SGS-LTER）项目研究人员编制。该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）的综合项目馆藏中，访问链接为：http://digitool.library.colostate.edu/R/?func=collections&collection_id=3429。以生态元数据语言（Ecological Metadata Language）生成的数据表及配套元数据文档，可通过服务于生态研究共同体的其他仓储获取，同时亦是完整SGS-LTER项目馆藏的组成部分。本研究针对降水稀少且波动显著的短草草原生态系统，分析了1985年至1992年期间蒸发带下方土壤水分的长期动态变化与空间异质性。砂壤土、黏壤土以及两处砂黏壤土样地均各自包含高地、中坡与低地三种坡位的地形序列（toposequence）。研究以15厘米为间隔对土壤水分进行监测，监测深度覆盖22.5至97.5厘米。整个土壤剖面的土壤含水量以黏壤土样地最高，砂壤土样地最低；但坡位间的土壤储水量并未呈现系统性变化规律。更多相关信息及参考资料可通过以下链接获取：http://hdl.handle.net/10217/82912