Favorable soil conditions affect a plant's chances of survival beneath trees. 合适的土壤条件影响大树底下植物的成活率。
Dengue transmission is influenced by meteorologic conditions, including rainfall and humidity, and often exhibits strong seasonality. 登革热的传播也受气象条件影响,包括降雨量和湿度,而且经常展现强烈的季候性。