| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Temporal changes of an alfalfa succession and related soil physical properties on the Loess Plateau, China
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| Autores: |
She,Dong Li
Shao,Ming An
Timm,Luis Carlos
Reichardt,Klaus
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| Data: |
2009-02-01
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| Ano: |
2009
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| Palavras-chave: |
Medicago sativa
Agropastoral transition zone
Community characteristics
Soil physical properties
Soil water restoration
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| Resumo: |
The objective of this work was to investigate the relationship between changes in the plant community and changes in soil physical properties and water availability, during a succession from alfalfa (Medicago sativa L.) to natural vegetation on the Loess Plateau, China. Data from a succession sere spanning 32 years were collated, and vegetative indexes were compared to changes related to soil bulk density and soil water storage. The alfalfa yield increased for approximately 7 years, then it declined and the alfalfa was replaced by a natural community dominated by Stipa bungeana that began to thrive about 10 years after alfalfa seeding. Soil bulk density increased over time, but the deterioration of the alfalfa was mainly ascribed to a severe reduction in soil water storage, which was lowest around the time when degradation commenced. The results indicated that water consumption by alfalfa could be reduced by reducing plant density. The analysis of the data also suggested that soil water recharge could be facilitated by rotating the alfalfa with other crops, natural vegetation, or bare soil.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000200011
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/S0100-204X2009000200011
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.44 n.2 2009
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| Direitos: |
info:eu-repo/semantics/openAccess
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