[1]曾锋,张金池*,朱丽珺.下蜀栎林土壤空间变异性及其样本容量的确定[J].南京林业大学学报(自然科学版),2005,29(02):051-53.[doi:10.3969/j.jssn.1000-2006.2005.02.012]
 ZENG Feng,ZHANG Jin-chi*,ZHU Li-jun.Research on Spatial Variability of Quercus variabilis Forest Soil on Xiashu Loess and Determining Number of Sample[J].Journal of Nanjing Forestry University(Natural Science Edition),2005,29(02):051-53.[doi:10.3969/j.jssn.1000-2006.2005.02.012]
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下蜀栎林土壤空间变异性及其样本容量的确定
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
29
期数:
2005年02期
页码:
051-53
栏目:
研究论文
出版日期:
2005-02-20

文章信息/Info

Title:
Research on Spatial Variability of Quercus variabilis Forest Soil on Xiashu Loess and Determining Number of Sample
文章编号:
1000-2006(2005)02-0051-03
作者:
曾锋1张金池2*朱丽珺3
1. 广东省林业局, 广东 广州 510173; 2. 南京林业大学森林资源与环境学院, 江苏 南京 210037; 3. 南京林业大学信息科学与技术学院, 江苏 南京 210037
Author(s):
ZENG Feng1 ZHANG Jin-chi2* ZHU Li-jun3
1. Forestry Bureau of Guangdong Province, Guangzhou 510173, China; 2. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China; 3. College of Information Science and Technology Nanjing Forestry University, Nanjing 210037, China
关键词:
下蜀系黄土 栎林土壤 空间变异性 样本容量
Keywords:
Xiashu loess Quercus variabilis forest soil Soil roomage variability Sampling number
分类号:
S718
DOI:
10.3969/j.jssn.1000-2006.2005.02.012
文献标志码:
A
摘要:
<正>比较了不同Z-艺、参数条件下合成改性脲醛树脂性能指标的变化趋势,以及不同工艺参数对改性树脂胶合性能的影响。结果表明:加成反应阶段,pH的降低对改性脲醛树脂各项性能的提高有利;升高反应温度可以改善改性脲醛树脂的综合性能,适中的加成反应时间有助于改性脲醛树脂的各项性能的改善;缩聚反应阶段,pH的降『氐不利y-储存期的延长,但对改性脲醛树脂其他性能的提高均有较好影响,缩聚反应的温度过_高或过低均不利于改性脲醛树脂综合性能的提高;初摩尔比明显地影响储存期,初摩尔比高则储存期长;甲醛释放量随初摩尔比降低呈升高趋势。
Abstract:
By means ot" analyzing many soil sample’s physical and chemical characteristic such as soil bulk density, non-capillary porosity,infiltration capability, soil organic matter, soil pH value and so on in different Quercus variabitis forest soil profiles, the results showed that they have obvious roomage variability. And this roomage variability in vertical is more than that in horizontal. Therefore, we must base on the deviation theory to confirm the soil sample in different soil depth. And this is the only way to ensure the results to be correct and comparability. The results also showed it is needed to sampling decades samples even more than 100 when analyzing infiltration capability, but less than 20 samples when analyzing other soil characteristic.
更新日期/Last Update: 2013-05-20