Long-Term Ecological Research (LTER)/CDR029: ARC/INFO GIS at Cedar Creek Natural History Area

LTER - Long-Term Ecological Research Program/Cedar Creek Natural
History Area (CDR)

LTER/CDR029 [Summary adapted from the LTER Core Data Set Catalog]:

Vegetation type, size, and density maps were produced by
photo-interpreting 1938 and 1977 aerial photography. These maps were
entered along with roads, section corner and boundary layers from USGS
7G minute quadrangles into the ARC/INFO GIS package. This information
will be combined with oak wilt, climate, soils, and prescribed burn
history to analyze vegetation change over time under different burn
treatments.

The Cedar Creek Natural History Area (CCNHA) is a 2200 hectare
experimental ecological reserve operated by the University of
Minnesota in cooperation with the Minnesota Academy of Sciences. CCNHA
is located in Anoka and Isanti Counties north of Minneapolis/St. Paul.
The site was established in 1940, was designated a National Natural
Landmark by the National Park Service in 1975. In 1977 it was included
as an Experimental Ecology Reserve in a proposed network, and in 1982
it was one of 11 sites in the U.S. selected by the National Science
Foundation for funding of LTER.

Information about LTER is also available at
'http://lternet.edu/'

长期生态研究计划（Long-Term Ecological Research Program）/锡达克里克自然历史区（CDR）

LTER/CDR029 [摘要改编自LTER核心数据集目录]：

通过对1938年与1977年的航空摄影照片进行目视解译，生成了植被类型、面积与密度分布图。上述分布图与美国地质调查局（United States Geological Survey，简称USGS）7G分幅地形图中的道路、分区界角及边界图层一同被导入至ARC/INFO地理信息系统（Geographic Information System，简称GIS）中。本数据集将与栎枯病、气候、土壤及计划性火烧历史数据相结合，用于分析不同火烧处理模式下的植被长期动态变化。

锡达克里克自然历史区（Cedar Creek Natural History Area，简称CCNHA）是一处面积达2200公顷的实验性生态保护区，由明尼苏达大学与明尼苏达科学院合作运营。该保护区坐落于明尼阿波利斯-圣保罗都会区以北的阿诺卡县与伊桑蒂县境内。该保护区始建于1940年，于1975年被美国国家公园管理局（National Park Service）评定为国家自然地标；1977年被纳入拟建的实验生态保护区网络；1982年成为美国国家科学基金会（National Science Foundation）资助的11个LTER站点之一。

有关LTER的更多信息可访问：http://lternet.edu/