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这篇在犹他和怀俄明州对拟定预测公式进行的研究论文报告,阐述了美洲山杨胸径和生物量、林分内生物量分布以及不同的树木器官主要营养成份的相互关系。 方法 立地描述—树木试样来自美国西部两个相隔很远的多山立地上的3个无性系。这两个立地是进行美洲山杨经营和生态多学科研究的地方。一个立地是ChickenCreek 靠近犹他州的盐湖城东北24公里的Davis县试验性集水区,海拔2400米。这个立地上美洲山杨下层木由灌木、高杆阔叶草和草占优势。平均降水量大约是114
This report of the research paper prepared in Utah and Wyoming on the proposed prediction formula describes the relationship between the Young DBH and biomass of Populus deltoides, the distribution of biomass within stands, and the major nutrient components of different tree species. Methodology Site Description - The tree samples were from three clones in two remote mountains in the western United States. These two sites are the site for multi-disciplinary research on Populus euphratica and Ecology. One site is ChickenCreek Davis County Experimental Catchment, 24 kilometers northeast of Salt Lake City, Utah, at an altitude of 2,400 meters. The poplar understorey on this site is dominated by shrubs, broadleaf and grass. The average precipitation is about 114