海南植胶区土壤有机质纬度分布特征及其气候影响因素

海南植胶区是中国热带森林的重要组成部分,土壤有机质的分布对海南橡胶产业的发展起到了重要作用,以海南植胶区土壤有机质为研究对象,在大区域尺度上研究跨纬度分布特征,以年累积温度、年均蒸发量和年均风速等气候为影响因素,研究其相关性。结果表明,土壤有机质含量随纬度上升而有升高的趋势,与年累积温度和年均蒸发量均呈显著负相关,与年均风速呈显著正相关。说明在大区域尺度上,海南植胶区土壤有机质含量具有北高南低的分布特征,年累积温度、年均蒸发量和年均风速等气候因素对土壤有机质的分布产生了重要影响。

Latitude distribution of soil organic matter and its influence of climate factors in rubber planting areas in Hainan Island

Rubber planting areas are an important part of tropical forests in Hainan island.The distribution of soil organic matter played an important role on the development of rubber industry.The soil organic matter in Hainan rubber planting areas were studied through a large regional scale in the cross-latitude distribution,the factors of annual accumulated temperature,average annual evaporation and average annual wind speed.The results showed that soil organic matter content increases with increase in latitude,the soil organic matter and annual accumulated temperature showed a significant negative correlation,the same as average annual evaporation.But the soil organic matter and average annual wind speed were significantly correlated.This means that in the large regional scale,the soil organic matter contents from north to south were gradually reduced in Hainan rubber planting areas,the factors of annual accumulated temperature,average annual evaporation and average annual wind speed on the distribution of soil organic matter had a significant impact.