swamp poplar
英
美
[网络] 异叶杨
双语例句
- Generally, soil organic matter in the valley is low. However, soil organic matters in swamp meadow and poplar forest are relatively higher than those of other soil types.
结果表明：拉萨河谷土壤有机质含量普遍较低，其中沼泽草甸、人工杨树林有机质含量相对较高。 - Soil organic carbon accumulated relatively in lower soil layer in swamp meadow, poplar forest and scrub-steppe, while soil organic carbon distributed evenly in arable soils such as farmland, wasteland and plant nursery.
沼泽草甸、杨树林和灌丛草原类型在浅层土壤积累了相对较多的有机碳，而耕作类土壤如农田、弃耕地和苗圃的有机碳垂直分布则相对较均匀。