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1概况测区位于云南景洪市南林山地区,属横断山系纵谷区南段,处于北回归线以南,属热带季风气候,经济作物主要有橡胶、茶叶及木材,是闻名中外的“普洱茶”原料生产地之一。测区大地构造位置属澜沧江南段云县—景洪晚古生代末—早中生代火山岛弧带,主要出露下元古界大勐龙群(Pt1DM)深变质岩系;二叠系
1 Overview The survey area is located in the South Lin Shan area of Jinghong City, Yunnan. It belongs to the southern section of the Rift Valley section of the Hengduanshan Mountains and is located in the south of the Tropic of Cancer. It is a tropical monsoon climate. Its cash crops are mainly rubber, tea and timber. "One of the raw material production. The geotectonic location of the survey area belongs to the late Paleozoic-early Mesozoic volcanic arc belt in Yunxian-Jinghong area of the southern Lancangjiang River, and mainly shows the deep metamorphic rocks of Lower Mongolian Longdian (Pt1DM) group; Permian