| 集约经营雷竹林土壤微生物的演变 |
| |
| 引用本文： | XU Qiu-Fang,JIANG Pei-Kun. 集约经营雷竹林土壤微生物的演变[J]. 土壤圈, 2005, 15(1): 33-40 |
| |
| 作者姓名： | XU Qiu-Fang JIANG Pei-Kun |
| |
| 作者单位： | Zhejiang Forestry College, Lin’an 311300, China. |
| |
| 基金项目： | *1Project supported by the National Natural Science Foundation of China (No.30271072) and the Natural Science Foundation of Zhejiang Province (No.301250). |
| |
| 摘 要： | Phyllostachys praecox C. D. Chu et C. S. Chao, a favored bamboo shoot species, has been widely planted in recent years. Four stands with different historical management practices were selected for this study to understand the evolution of soil microbial ecology by determining the effects of a new mulching and heavy fertilization practice on soil quality using microbiological parameters. Compared with the traditional practice (index 1), microbial biomass carbon (MBC) and soil microbial respiration carbon (MRC) with the new management practice significantly decreased (P < 0.01 and P < 0.05, respectively) with 1--2 years of mulching (index 2) and then for continued mulching significantly increased (P < 0.05). The ratios of MBC/TOC (total organic carbon) and MRC/TOC also significantly diminished (P < 0.05) with mulching. The average well color development (AWCD) and Shannon index decreased with mulching time, and the significant decrease (P < 0.05) in Shannon index occurred from index 2 to index 3. The results from a principal components analysis (PCA) showed that the scores of the first principal component for indexes 1 and 2 were significantly larger (P < 0.05) than soils mulched 3--4 years or 5--6 years. Also, the second principal component scores for index 1 were larger than those for index 2, suggesting that the ability of soil microorganisms to utilize soil carbon was decreasing with longer use of the new management practice and causing a deterioration of soil biological properties.
|
| 关 键 词： | 微生物 碳含量 功能差异 碳呼吸 土壤学 |
Microbial development in soils under intensively managed bamboo (Phyllostachys praecox) stands |
| |
| XU Qiu-Fang and JIANG Pei-Kun. Microbial development in soils under intensively managed bamboo (Phyllostachys praecox) stands[J]. Pedosphere, 2005, 15(1): 33-40 |
| |
| Authors: | XU Qiu-Fang and JIANG Pei-Kun |
| |
| Affiliation: | Zhejiang Forestry College, Lin'an 311300 (China). E-mail: xuqiufang@zjfc.edu.cn;Zhejiang Forestry College, Lin'an 311300 (China). E-mail: xuqiufang@zjfc.edu.cn |
| |
| Abstract: | Phyllostachys praecox C. D. Chu et C. S. Chao, a favored bamboo shoot species, has been widely planted in recent years. Four stands with different historical management practices were selected for this study to understand the evolution of soil microbial ecology by determining the effects of a new mulching and heavy fertilization practice on soil quality using microbiological parameters. Compared with the traditional practice (index 1), microbial biomass carbon (MBC) and soil microbial respiration carbon (MRC) with the new management practice significantly decreased (P < 0.01 and P < 0.05, respectively) with 1--2 years of mulching (index 2) and then for continued mulching significantly increased (P < 0.05). The ratios of MBC/TOC (total organic carbon) and MRC/TOC also significantly diminished (P < 0.05) with mulching. The average well color development (AWCD) and Shannon index decreased with mulching time, and the significant decrease (P < 0.05) in Shannon index occurred from index 2 to index 3. The results from a principal components analysis (PCA) showed that the scores of the first principal component for indexes 1 and 2 were significantly larger (P < 0.05) than soils mulched 3--4 years or 5--6 years. Also, the second principal component scores for index 1 were larger than those for index 2, suggesting that the ability of soil microorganisms to utilize soil carbon was decreasing with longer use of the new management practice and causing a deterioration of soil biological properties. |
| |
| Keywords: | microbial biomass carbon microbial functional diversity microbial respiration carbon Phyllostachys praecox soil |
|
| 点击此处可从《土壤圈》浏览原始摘要信息 |
|
点击此处可从《土壤圈》下载全文 |
