College of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China;
College of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China;
College of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China;
College of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China;
College of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China;
College of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China;
Platycladus orientalis; gas exchange; net photosynthesis rate; water use efficiency; diurnal course;