Soil organic matter dynamics in paired rangeland and cropland toposequences in North Dakota (Record no. 48408)

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control field MX-MdCICY
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control field 20250625153937.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-14214
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
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245 10 - TITLE STATEMENT
Title Soil organic matter dynamics in paired rangeland and cropland toposequences in North Dakota
490 0# - SERIES STATEMENT
Volume/sequential designation Geoderma, 36(3-4), p.201-214, 1985
520 3# - SUMMARY, ETC.
Summary, etc. The effects of cultivation and erosion on organic matter transformations were studied by systematically sampling slope positions on three paired rangeland and cropland toposequences. The toposequences were on differing parent materials, sandstone, siltstone and shale in southwestern North Dakota. Soils weathered from the three parent materials were all Haploborolls or Argiborolls but differed in texture and solum depth. Carbon, nitrogen, phosphorus and soil loss have been previously measured. Microbial biomass C and N by chloroform fumigation, mineralizable C and N during 10, 20 and 60 day incubations, and organic C and N content were measured. Decreases in the above soil properties occurred in cropland soils, but the proportion of organic N mineralized increased. Biomass and mineralizable C and N concentrations were correlated with organic C and N concentrations, rather than with total accumulation in the profile. Total accumulation and proportion of N mineralized were correlated with clay content. Changes in respiration: mineralization, mineralization:biomass and microbial C:N ratios suggested differences in substrate and microbial population composition between rangeland and cropland. Microbial biomass and mineralization rates did not vary with slope position, but parent material had significant effects. The siltstone site which had the highest soil losses began with the highest microbial biomass and mineralizable C and N concentrations and had the highest losses. The sandstone site suffered high soil but low OM constituent losses whereas the shale site suffered low soil and OM constituent losses. The sites can be classified in terms of their response to perturbation using concepts of "resistance" and "resilience" from ecosystem theory. The sandstone and shale sites may both be considered "resistant" with respect to agricultural perturbation, whereas the sittstone site was not.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Schimel, D.S.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Coleman, D.C.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Horton, K.A.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1bOjAe0llXD7Dt0WnmoYkHrjKCaUAo-DL/view?usp=drivesdk">https://drive.google.com/file/d/1bOjAe0llXD7Dt0WnmoYkHrjKCaUAo-DL/view?usp=drivesdk</a>
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-14214 25.06.2025 25.06.2025 Documentos solicitados