Studies on plant species diversity conservation in paddy field landscape in Laos

本研究描述了老挝水田植被与当地人民之间的关系，在老挝，农药和化肥施用很少。在稻田中，虽然记录到多种植物，包括稀有植物如籼稻，但与水稻植物生长竞争的杂草种类很少。在老挝市场出售的125种野生食用植物中，有20种是从稻田中采集的。爪哇草和仿射草被称为日本的“七春草”，分布于东喜马拉雅至日本的广大地区。这些发现对人类住区及其周边环境的保护具有重要意义。

This study described the relationship between paddy field vegetation and local people in Laos, where agricultural chemicals and fertilizer are little applied. Although a variety of plants including rare species such as Drosera indica were recorded, there were few weed species competing with the growth of rice plant in paddy fields. Among 125 wild edible plants sold at markets in Laos, 20 species were collected from paddy fields. Oenanthe javanica and Gnaphalium affine, known as "the seven spring herbs" in Japan, were distributed in wide region from Eastern Himalaya to Japan. These findings have much implication on the environmental conservation in and around human settlements.