海南岛位于北纬18°10′—20°10′,东经108°37′—110°03′,面积33907.7平方公里,仅次于台湾,是中国的第二大岛。海南岛的气候特点是全年高温,夏秋季多雨,台风频繁,雨季旱季分明。地形起伏中等,低地和丘陵地占大部分。海拔500米以下的面积占全岛的74.6％,分布于山地周围。土壤发育深厚,红色。河流短促,但其有效流量达 Hainan Island is located at latitude 18o 10’-20o 10’N and longitude 108o 37’-110o 03’and covers an area of ​​33,909.7 km 2, second only to Taiwan. It is the second largest island in China. The climate in Hainan Island is characterized by year-round high temperatures, rainy summer and autumn, frequent typhoons and distinct dry seasons during the rainy season. Undulating terrain medium, lowlands and hills account for the majority. The area below 500 meters above sea level accounts for 74.6% of the island, distributed around the mountains. Deep soil development, red. The river is short, but its effective flow rate is up