热带雨林气候条件下澜沧江景洪至勐罕段微藻多样性研究

Study on Microalgae Diversity in Jinghong Menghan Section of Lancang River under Tropical Rain Forest Climate

摘要: 本文为在热带雨林气候条件下研究澜沧江景洪至勐罕段水域的微藻多样性，并且有针对性地调查了该区域内有毒微藻的种类情况。通过对研究区进行分段选择，在该段水域的景洪告庄(起点)、橄榄坝农场三分场(中点)以及勐罕码头(终点)三个地点于春夏秋冬四季分别进行采样，而后经过直接镜检以及水样富集后镜检的方式观察并记录水样中的微藻种类、数量及形态。综合数据得出，共发现3门5纲14目21科30属34种的微藻。研究发现该水域中存在丰富的小球藻资源，并且在该水域中发现了有毒微藻微囊藻，这一发现有利于更好地开发和利用当地的微藻资源，同时也为研究区内微藻防治打下坚实的基础。

Abstract: The purpose of this paper is to study the microalgae diversity in the Jinghong Menghan section of Lancang River under the tropical rain forest climate, and to investigate the species of toxic microalgae in this area. Through the sectional selection of the study area, samples were taken in the four seasons of spring, summer, autumn and winter at the three sites of Jinghong Gaozhuang (starting point), olive dam farm (middle point) and Menghan Wharf (end point) in the water area, and then the species, quantity and morphology of microalgae in the water samples were observed and recorded through direct microscopic inspection and microscopic inspection after water sample enrich-ment. According to the comprehensive data, 34 species of microalgae belonging to 3 phyla, 5 classes, 14 orders, 21 families, 30 genera were found. It is found that there are abundant Chlorella resources in the water area, and toxic microalgae Microcystis are found in the water area. This discovery is conducive to the better development and utilization of local microalgae resources, and also lays a solid foundation for microalgae control in the study area.