论文部分内容阅读
研究了不同立地条件下落叶松树冠各个方向的净光合速率、呼吸速率、日进程及季节进程。利用落叶松净光合速率计算出固定能量和葡萄糖量，作为初级生产力（Ｐｎ）的指标，来评价不同地区落叶松生长的能力。结果表明：哈尔滨林场的长白落叶松纯林和老山生态站的针阀混交落叶松林的初级生产力最大为８．５９７ＭＪ／ｍ－２·ｈ－１，其次二龙山林场的针叶混交林的落叶松为７．６３２ＭＪ／ｍ－２·ｈ－１，再次长白落叶松（大树）为８．４１０ＭＪ／ｍ－２·ｈ－１，最次的是老山生态站的兴安落叶松和长白落叶松纯林各为，６．１７７、６．０２３ＭＪ／ｍ－２·ｈ－１。
The net photosynthetic rate, respiration rate, daily process and seasonal process of larch crown in different site conditions were studied. Using larch net photosynthetic rate to calculate the amount of fixed energy and glucose as an index of primary productivity (Pn) to evaluate the ability of larch growth in different areas. The results showed that the primary productivity of the Larix olgensis plantation in Lao Shan ecological station and the needle-valve mixed coniferous forest in Harbin Forest Farm was 8.597MJ / m-2 · h-1, followed by the deciduous coniferous forest in Erlongshan Forest Farm Pine was 7.632MJ / m-2 · h-1, again Larix olgensis (big tree) was 8.410MJ / m-2 · h-1, the most was the Laoshan ecological station of Larix gmelinii and Changbai deciduous Pure pine forest each, 6.177, 6.023MJ / m-2 · h-1.