| Effects of soil moisture and soil depth on nitrogen mineralization process under Mongolian pine plantations in Zhanggutai sandy land, P. R. China |
| |
| 作者姓名： | 陈伏生 曾德慧 SINGH Anand Narain 陈广生 |
| |
| 作者单位： | 中国科学院沈阳应用生态研究所大青沟沙地生态实验站，中国科学院沈阳应用生态研究所大青沟沙地生态实验站，沈阳市110016，中国，中国科学院沈阳应用生态研究所大青沟沙地生态实验站，沈阳市110016，中国，中国科学院沈阳应用生态研究所大青沟沙地生态实验站 沈阳市110016，中国科学院研究生院，北京10003，中国，沈阳市110016，School of Forestry and Wild life Sciences，Auburn University，AL36830，USA. |
| |
| 基金项目： | This paper was supported by National Natural Science Foundation of China (30471377), the Chinese Academy of Sciences (Knowledge Innovation Project KZCX3-SW-418), and the Institute of Applied Ecology of Chinese Academy of Sciences (SLYQY0409). |
| |
| 摘 要： | 选择章古台地区三块典型樟子松(Pinussylvestrisvar.mongolica)人工固沙林为研究对象,采用实验室好氧培养法测定了不同土壤层次和在不同水分条件下的N矿化过程。结果表明:土壤0-60cm层N净矿化速率垂直变化范围为1.06–7.52mg·kg-1·month-1;土壤层次和含水量及其交互作用对土壤N净矿化速率的影响均达到差异显著(P<0.05);净矿化速率随着土壤层次的加深而明显下降,0-15cm层占总净矿化量的60.52%;半饱和与饱和含水量处理差异不显著,但均高于不加水处理。为此,在半干旱地区必须进一步加强开展调控生态系统N矿化、循环及其收支平衡影响因素的研究。图1表4参20。
|
| 关 键 词： | 樟子松 土壤层次 土壤水分 土壤氮矿化 半干旱地区 实验室好氧培养法 固沙林 |
| 收稿时间： | 4 March 2005 |
Effects of soil moisture and soil depth on nitrogen mineralization process under Mongolian pine plantations in Zhanggutai sandy land, P. R. China |
| |
| Chen Fu-sheng,Zeng De-hui,Singh Anand Narain,Chen Guang-sheng.Effects of soil moisture and soil depth on nitrogen mineralization process under Mongolian pine plantations in Zhanggutai sandy land, P. R. China[J].Journal of Forestry Research,2005,16(2):101-104. |
| |
| Authors: | Chen Fu-sheng Zeng De-hui Singh Anand Narain Chen Guang-sheng |
| |
| Institution: | (1) Daqinggou Ecological Station, Institute of Applied Ecology, Chinese Academy of Sciences, 110016 Shenyang, P. R. China;(2) Graduate School of Chinese Academy of Sciences, 100039 Beijing, P. R. China;(3) School of Forestry and Wildlife Sciences, Auburn University, 36830, AL, U.S.A. |
| |
| Abstract: | The rates of soil N mineralization at soil depths of 0–15, 15–30, 30–45 and 45–60 cm and moisture regimes were measured at
three sand-fixation plantations ofPinus sylvestris var.mongolica by laboratory aerobic incubation method. The results showed that average rates of soil net N-mineralization across soil depth
varied from 1.06 to 7.52 mg·kg−1·month−1 at soil depths from 0 to 60 cm. Statistical analyses indicated that the effects of different soil depths, moistures and their
interactions on net N-mineralization rates were significant (P<0.05). The net N-mineralization rates significantly decreased with increasing soil depths and at depth 0–15 cm accounted
for 60.52% of that at depth of 0–60 cm. There was no difference in soil net N-mineralization rates between half and fully-saturated
water treatments, however these rates were substantially higher than that without water treatment (P<0.05). The factors influencing N mineralization process have to be studied further in these semiarid pine ecosystems.
Foundation item: This paper was supported by National Natural Science Foundation of China (30471377), the Chinese Academy of Sciences (Knowledge
Innovation Project KZCX3-SW-418), and the Institute of Applied Ecology of Chinese Academy of Sciences (SLYQY0409).
Biography: CHEN Fu-Sheng (1973-), male, Ph.D. Candidate, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016,
P. R. China.
Responsible editor: Zhu Hong |
| |
| Keywords: | Laboratory aerobic incubation method Nitrogen mineralization Management practices Sand-fixation forest Semiarid region Pinus sylvestris var mongolica Soil depth |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
