02387naa a2200277 a 450000100080000000500110000800800410001910000180006024501470007826000090022552014950023465000190172965000200174865000150176865000250178365300270180865300270183565300210186265300230188365300180190665300150192465300190193965300230195870000190198177301090200017876491996-03-01       1971    bl ---       0--  u    #d1 aMILLER, L. D.  aAreal mapping program of the IPB Grassland BiomebRemote sensing of the productivity of the shortgrass prairie as input into biosystem models.  c1971  aThe IBP Grassland Biome Program is a major ecosystem analysis involving 88 principal investigatigators systematically describing the functioning of natural grasslands. A compre- hensive remote sensing research program has been undertaken in the context of this ove- rall experiment to determine the utility of various sensor devices in supplying input data into this biosystem model. The initial objective of this effort has been to design and test a multi- faceted approach to measure and map percent cover of areas ranging from small grass- land plots to much larger landscapes. These maps provide the basic data from which to interpret standing crop or above ground biomass and in turn, the primary productivity of a grassland. The amount of vegetation on a prairie can be measured by its characteristics spectroradiance or spectroreflectance. A variety of approaches to exploiting this relation- ship are covered in the report, including the use of airborne and satellite multispectral sca- nner imagery, aerial and ground photography, and ground spectrometry. Each of these approaches is explained in detail and preliminary results are presented. A description of the design, construction, and testing of the trailer-mounted, field spectrophotometer is also included. A landscape model is described which has been designed to interface the data taken by mapping remote sensors to the biosystem or hydrologic models which statistica- lly describe the functioning of a natural grassland.  aremote sensing  aPastagem Nativa  aProdução  aSensoriamento Remoto  aAereal mapping program  aAnalise do ecossistema  aBiosystem models  aEcosystem analysis  aGrama pequena  aMapa aereo  aNative pasture  aShortgrass prairie1 aPEARSON, R. L.  tIn: INTERNATIONAL SYMPOSIUM REMOTE SENSING, 7., 1971, [S.l.]. Proceedings. [S.l.: s.n.] 1971. p.165-205.