热带雨林转变为橡胶林和橡胶—砂仁复合林对土壤环境的影响

打开文本图片集

中图分类号：S714.2 文献标志码：A 文章编号：1004-390X（2025）05-0125-08

Abstract： [Purpose] To explore the efects of conversion of tropical rainforests to rubber and rubber-Amomum villosum plantations on the soil environments of the 0⋅90cm soil layers，andto evaluate the feasibility of large-scale promotion of rubber-A. villosum plantations. [Methods] Field sampling combined with laboratory analysis was employed to quantitatively assess soil moisture content， pH， total carbon， total nitrogen， total phosphorus， ammonium nitrogen， nitrate nitrogen，available phosphorus， exchangeable aluminum， available copper， and available manganese in the 0⋅90cm soil layers of tropical rainforests， rubber plantations，and rubber-A. villosum plantations. [Results] Conversion of tropical rainforests to rubber plantations reduced soil moisture content in the 0⋅90cm soil layers， and the establishment of rubber-A. villosum plantations further exacerbated soil moisture depletion. Both conversion types led to decreased soil total carbon and total nitrogen in the 0-30cm soil layers，as wellas reductions in total phosphorus， nitrate nitrogen， available copper，and available manganese in the 0⋅90cm soil layers. Exchangeable aluminum content in the 30⋅90cm soil layer of rubber plantations was significantly higher than that found in tropical rainforests and rubber-A. villosum plantations.The establishment of rubber-A. villosum plantations decreased soil exchangeable aluminum in the surface soils and increased available phosphorus. [Conclusion] The conversion of tropical rainforests to rubber plantations not only adversely affects the moisture and nutrient levels of the surface soils but also exacerbates the depletion of moisture and nutrients in deeper soil layers.The rubber-A. villosum plantations have some ameliorative effects on the soil environment; however， they continue to intensify the consumption of soil moisture.Therefore，the large-scale promotion of rubberA. villosum plantations must take into account their impact on regional water balance.

Keywords： rubber agroforestry systems; soil moisture; soil carbon and nitrogen; Xishuangbanna

橡胶（Heveabrasiliensis）是重要的工业原料，在工业和日常生活中发挥着重要作用。（剩余11063字）