Geochemical environment, geographical landscape and climate conditions are major factors deciding the distribution and quality of famous and special local products.

地球化学环境同地理景观、气候条件等是决定名优特产分布及其品质的主要因素。

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In addition to the petroleum geologic conditions, the main causes are also related with the properties of near surface sediments and the geographical and geomorphologic landscape conditions.

其主要原因除与油气地质条件相关外，还取决于近地表沉积物的性质，以及地理、地貌的景观条件。

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