Data/hora: 09/06/2024 18:42:56

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 26/05/2009
Data da última atualização: | 29/05/2018
Autoria: | SHE, D. L.; SHAO, M. A.; TIMM, L. C.; REICHARDT, K.
Afiliação: | Dong Li She, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences & Ministry of Education, Institute of Soil and Water Conservation, Northw; Ming An Shao, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences & Ministry of Education, Institute of Soil and Water Conservation, Northw; Luis Carlos Timm, Universidade Federal de Pelotas, Faculdade de Agronomia, Departamento de Engenharia Rural; Klaus Reichardt, Universidade de São Paulo, Centro de Energia Nuclear na Agricultura, Laboratório de Física do Solo.
Título: | Temporal changes of an alfalfa succession and related soil physical properties on the Loess Plateau, China.
Ano de publicação: | 2009
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 2, p. 189-196, fev. 2009.
Idioma: | Inglês
Notas: | Título em português: Variações temporais de uma sucessão de alfafa e de propriedades físicas do solo a elas relacionadas no Loess Plateau, China.
Conteúdo: | 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.
Palavras-Chave: | agropastoral transition zone; community characteristics; comunidades características; propriedades físicas do solo; recuperação da água no solo; soil water restoration; zona de transição agropastoril.
Thesagro: | Medicago Sativa.
Thesaurus Nal: | soil physical properties.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/106121/1/Temporal-changes.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (45702-1) - UPE - AP - DD - 630.72081 - P474 -  - DIS