| 1. | Thoughts on the natural regeneration of larix gmelinii rupr 对兴安落叶松天然更新的思考 |
| 2. | Natural regeneration condition in pinus koraiensis broad - leaved mixed forest 长白山红松阔叶混交林森林天然更新条件的研究 |
| 3. | Characteristics of canopy patches related to natural regeneration of broad - leaved korean pine forest 阔叶红松林林冠斑块特征及其与林木更新的关系 |
| 4. | The developers are currently looking into the possibility of adding a higher rate of natural regeneration to the druid ' s forms 当前我们的程序开发员们正在考虑是否需要提升德鲁依变身状态后的自然回复速度(血、魔法) 。 |
| 5. | The results show that the main foctor that affects the natural regeneration is elevation , and the coverages of litter and brushwood were next 结果表明,影响该区森林天然更新的主要因素是海拔高度,其次是灌木层盖度和枯落物层的盖度。 |
| 6. | The actual reproduction and artificial restoration density were the biggest with the treatment of irrigation ? soil preparation + natural regeneration , and the average numerical value was 13 . 04 clumpes / m ^ 2 ranging from 3 clumpes / m ^ 2 to 28 clumpes / m ^ 2 . the others were as follows : 1 . 66 clumpes / m ^ 2 occurred in the treatment of unirrigation + soil preparation + artificial regeneration , ranging from 1 clumpe / m ^ 2 to 20 clumpes / m ^ 2 1 . 11 clumpes / m ^ 2 occurred in the treatment of unirrigation + soil preparation + natural regeneration , ranging from 0 . 5 clumpe / m ^ 2 to 17 clumpes / m ^ 2 0 . 25 5 clumpe / m ^ 2 occurred in the treatment of unirrigation + break ground + natural regeneration , ranging from 0 . 1 clumpe / m ^ 2 to 3 . 0 clumpes / m ^ 2 , and 0 . 012 clumpe / m ^ 2 occurred in the treatment without disturbance 以更新密度作为参数,其数值依次为:灌溉+整地十自然更新最大,平均为13 . 04丛/平方公尺,变化在3 28丛平方公尺之间;无灌溉+整地十人工种植恢复平均为1 . 66丛平方公尺,变化在1 20丛平方公尺之间;无灌溉十整地+自然更新恢复平均为1 . 11丛平方公尺,变化在0 . 5 17丛平方公尺之间;无灌溉+破土+自然更新平均为0 . 255丛平方公尺,变化在0 . 1 3 . 0丛平方公尺之间;无干扰自然更新平均为0 . 012丛平方公尺。 |
| 7. | The self - poisoning effects of chinese fir plantation are studied through the seed germination experiment with the extracts of organs , bulk soils and rhizosphere soil of different rotation plantations . the results are as follows : there are some poisonous substances inhibiting germination of chinese fir seeds in soils of chinese fir plantations . the inhibiting effect becomes stronger and stronger with increase of planting generations . extracts from the organs of chinese fir trees also have some inhibiting effects on seed ' s germination , but the effect of leaf is the strongest . lower concentration extracts of underground vegetation may be favorable to the seed ' s germination whereas the higher concentration will reverse the results . it indicates that the “ self - poisoning ” effects of chinese fir plantations might be one of the reasons for poor natural regeneration and soil degradation of chinese fir plantation 利用不同栽植代数杉木人工林根际土、非根际土及杉木各器官浸提液进行杉木种子发芽试验,研究杉木人工林自毒作用,研究结果表明:杉木林根际土及非根际土中均存在抑制杉木种子萌发的物质,随栽植代数增加抑制作用更趋明显;杉木各器官浸提液对杉木种子萌发也有抑制作用,其中以杉木叶的抑制作用最为明显,杉木林下常见植物对杉木种子发芽则表现为低促高抑效应,说明杉木人工林存在自毒作用,这可能是杉木连栽障碍的原因之一。 |
| 8. | The spectral analysis of the population showed that there was a marked regularity of periodic in the process of natural regeneration of taxus chinensis var . mairei , and it availed to the stabilazation of form . taxus chinensis var . mairei population . this paper presents the spatial distribution pattern and dynamics of form 南方红豆杉种群固有的生态生理特征决定了其生命表和存活曲线的类型,从种群发展的角度来看,早期较高的死亡率严重限制了南方红豆杉种群的扩展,是南方红豆杉濒危的重要原因。 |
| 9. | Based on the investigation on the structure and niches of secondary forests in jiulongkeng , guangze , fujian province , the distribution law was studied and natural succession tendency was worked out for primary arbors and shrubs in different slope direction , which provides scientific fundamental for artificial stimulating natural regeneration 摘要通过对福建光泽九龙坑不同坡向天然次生林的林分组成和生境的调查,研究主要乔灌木树种在不同坡向林分中的分布规律,分析出不同坡向林分的天然演替趋势,为人工促进天然更新提供科学依据。 |