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| 影响沙地樟子松天然更新的主要生态气候因子的定量分析 | |
| 引用本文： | 韩广,张桂芳,杨文斌.影响沙地樟子松天然更新的主要生态气候因子的定量分析[J].林业科学,1999,35(5):22-27. |
| 作者姓名： | 韩广 张桂芳 杨文斌 |
| 作者单位： | 1. 湖南师范大学资源与环境系,长沙410081 2. 湖南大学土木工程系,长沙410082 3. 内蒙古林业科学院,呼和浩特010010 |
| 摘 要： | 利用呼伦贝尔草原 2个组 8个站点的 33个变量进行了逐步判别分析。结果表明 ,影响沙地樟子松天然更新的生态气候因子主要是极端最低气温、极端最高地温、1月蒸发量和多年平均积雪日数等 4个 ,它们主要是通过对种子萌发和幼苗的生长发育施加限制作用。因此 ,在造林生产实践中应选择适宜的立地克服其消极影响 ,必要时应采取人工措施促使其天然更新 ,保障其持续稳定发展。 |
| 关 键 词： | 沙地樟子松 天然更新 呼伦贝尔草原 生态气候 逐步判别分析 |
| 修稿时间： | 1998-04-13 |
QUANTITATIVE ANALYSIS ON PRINCIPLE ECO-CLIMATIC FACTORS OF LIMITING NATURAL REFORESTATION OF PINUS SYLVESTRIS VAR.MONGOLICA ON SANDY LAND |
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| Han Guang,Zhang Guifang,Yang Wenbin.QUANTITATIVE ANALYSIS ON PRINCIPLE ECO-CLIMATIC FACTORS OF LIMITING NATURAL REFORESTATION OF PINUS SYLVESTRIS VAR.MONGOLICA ON SANDY LAND[J].Scientia Silvae Sinicae,1999,35(5):22-27. | |
| Authors: | Han Guang Zhang Guifang Yang Wenbin |
| Abstract: | Stepwise discriminate analysis (SDA) was conducted using 33 variables from 8 meterological stations which are divided into 2 groups in this paper. Results show that principal limiting factors on natural forestation of \%P.sylvestris\% var. \%mongolica\% on sandy land include extremely lowest air temperature, extremely highest surface temperature, evaporation quantity in January and average days of accumulating snow for many years, which strongly influence the seed germination and the growth and development of shoots. Therefore, it is neccessary to choose suitable habitats or niches to overcome those adverse factors as mentioned above in aforestation pratice, and take effective artificial measures to promote its natural reforestation so as to guarantee their stable and sustainable development. |
| Keywords: | P sylvestris\% var \%mongolica\% on sandy land Natural reforestation Eco\|climate Hulun\|ber Steppe Stepwise discriminate analysis(SDA) |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |