|
|||||
|
|
| 土壤温度和水分对长白山不同森林类型土壤呼吸的影响 | |
| 引用本文： | 王淼,姬兰柱,李秋荣,刘延秋.土壤温度和水分对长白山不同森林类型土壤呼吸的影响[J].应用生态学报,2003,14(8):1234-1238. |
| 作者姓名： | 王淼 姬兰柱 李秋荣 刘延秋 |
| 作者单位： | 1. 中国科学院沈阳应用生态研究所,沈阳,110016 2. 沈阳工业大学,沈阳,110023 3. 本溪市园林处,本溪,117000 |
| 基金项目： | 国家重点基础研究发展规划项目 (G19990 4 34 0 7)，中国科学院知识创新工程项目 (KZ CX SW 0 1 0 1B 10 )，国家自然科学基金资助项目 ( 30 2 710 6 8) |
| 摘 要： | 在实验室条件下，将不同含水量的3种森林类型的土柱分别置于0、5、15、25和35℃条件下，进行土壤呼吸测定．结果表明，在0～35℃范围内。土壤呼吸速率与温度呈正相关．在一定含水量范围内(0．21～0．37kg·kg^-1)，土壤呼吸随含水量的增加而升高，当含水量超出该范围，土壤呼吸速率则随含水量的变化而降低．土壤温度和水分对土壤呼吸作用存在明显的交互作用．不同森林类型土壤呼吸作用强弱存在显著差异，大小顺序为阔叶红松林>岳桦林>云冷杉暗针叶林．阔叶红松林土壤呼吸作用的最佳条件是土壤温度35℃、含水量0．37kg·kg^-1；云冷杉暗针叶林下的山地棕色针叶林土壤呼吸作用的最佳条件是25℃、0．21kg·kg^-1；岳桦林土壤呼吸作用的最佳条件是35℃、含水量0．37kg·kg^-1。但是．由于长白山阔叶红松林、云冷杉林和岳桦林处在不同的海拔带上，同期不同森林类型土壤温度各不相同，相差4～5℃，所以野外所测的同期山地棕色针叶林土呼吸速率应低于暗棕色森林土呼吸速率，山地生草森林土呼吸速率应高于山地棕色针叶林土的呼吸速率． |
| 关 键 词： | 土壤温度 土壤含水量 土壤呼吸速率 长白山森林生态系统 |
| 文章编号： | 1001-9332(2003)08-1234-05 |
| 修稿时间： | 2002年4月17日 |
Effects of soil temperature and moisture on soil respiration in different forest types in Changbai Mountain |
|
| WANG Miao ,JI Lanzhu ,LI Qiurong ,LIU Yanqiu.Effects of soil temperature and moisture on soil respiration in different forest types in Changbai Mountain[J].Chinese Journal of Applied Ecology,2003,14(8):1234-1238. | |
| Authors: | WANG Miao JI Lanzhu LI Qiurong LIU Yanqiu |
| Affiliation: | Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. wangmiao@iae.ac.cn |
| Abstract: | The effects of soil temperature (0, 5, 15, 25, 35 degrees C) and water content on soil respiration in three forest types in Changbai Mountain were evaluated in laboratory condition. The results indicated that the soil respiration rate was positively correlated to soil temperature from 0 to 35 degrees C and it increased with soil water content from 0.21 to 0.37 kg.kg-1. The soil respiration rate decreased with soil water content when water content was over the range. The result suggested the interactive effects of temperature and water content on soil respiration. There were significant differences in soil respiration among the various forest types and the highest was in broad leaf Korean pine forest, then in erman's birch forest, and it was the lowest in dark coniferous forest. The optimal condition for soil respiration in broad-leaved Korean pine forest was at 35 degrees C under 0.37 kg.kg-1 water content, and it was at 25 degrees C under 0.21 kg.kg-1 in dark coniferous forest and at 35 degrees C under 0.37 kg.kg-1 water content in erman's birch forest. Because the forests of broad leaf Korean pine, dark coniferous and erman's birch are located at various altitudes, the soil temperatures had 4-5 degrees C variation in different forest types during the same period. The soil respiration rates measured in brown pine mountain soil were lower than those in dark brown forest and they were higher in mountain grass forest soil than those in brown pine mountain soil. |
| Keywords: | Soil temperature Soil water content Soil respiration rate Forest ecosystems in Changbai Mountain |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《应用生态学报》浏览原始摘要信息 | |
| 点击此处可从《应用生态学报》下载全文 | |
