一、林区概况: 玛珂河林区位于青藏高原东部、大渡河上游,北纬32°39′—32°58′,东经100°38′—101°14′,在果洛藏族自治州班玛县境内。玛珂河贯通全林区,自西北向东南与泽永河会合流入四川境内。山脉最高海拔为4675米,河谷最低海拔为3200米,在海拔4200米以上无森林分布。平均坡度在35°以上。总的特点是山高、坡陡、谷深。 I. Overview of Forests: The Ma Kehe Forests are located in the eastern part of the Qinghai-Tibet Plateau and the upper reaches of the Dadu River, latitude 32 ° 39’-32 ° 58’N and longitude 100 ° 38’-101 ° 14’E. In the county of Banma of Guoluo Tibetan Autonomous Prefecture Territory. The Marco River runs through the whole forest and flows into the territory of Sichuan from the northwest to the southeast and the Ze Yong River. The highest mountain range of 4675 meters, the lowest elevation of 3200 meters in the valley, at an altitude of 4200 meters above the forest without distribution. The average slope is above 35 °. The general features are high mountains, steep slopes, deep valleys.