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- W2499299940 abstract "<title>Abstract</title> In the present study, the effects of continuous cropping on soil acidification were assessed by quantifying proton budgets in a soil-vegetation system including solute leaching, vegetation uptake and soil organic matter (SOM) decomposition in croplands and adjacent forests in Thailand and Indonesia. Also, the study tested whether SOM loss can neutralize acidity generated from nitrification under continuous cropping. Experimental plots consisted of one forest and one cropland plot in both Thailand and Indonesia. Results showed that under continuous cropping of the deforested land in northern Thailand, the enhanced SOM decomposition and crop removal result in a loss of SOM. The mineralization of soil organic nitrogen can enhance proton generation owing to nitrification. At the same time, SOM loss also enhanced proton consumption through mineralization of soil organic anions. Acidity contributed by nitrification can be neutralized by depletion of SOM at least during the initial stage of cropping after deforestation in tropical regions. However, it should be noted that the capacities of acid neutralization associated with SOM are reduced by continuous cropping in tropical regions, where the SOM stock is originally small compared to the temperate regions. In some regions of Asia, the conversion of traditional agricultural systems to intensive farming has accelerated soil acidification through nitrification of excessive fertilizer N within the past few decades. The impact of agriculture on soil acidification may be ameliorated by improving N fertilization strategies and maintaining SOM levels by assessing the effects of cropping on proton budgets. Under low-input tropical agriculture, SOM cycles have a strong influence on acidification processes. Soil acidification associated with intensive cropping after deforestation can be ameliorated by the build-up of SOM during forest fallow periods. Thus, case-by-case land-use strategies need to be developed by adjusting the length of forest fallow periods between cropping for maximizing the harvest or benefits to farmers through a fuller understanding of tropical soil chemical processes." @default.
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- W2499299940 date "2015-01-01" @default.
- W2499299940 modified "2023-09-25" @default.
- W2499299940 title "Acidification of tropical soils under forest and continuous cropping in Thailand and Indonesia." @default.
- W2499299940 doi "https://doi.org/10.1079/9781780642109.0055" @default.
- W2499299940 hasPublicationYear "2015" @default.
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