Phosphorous fractions in soils of rubber-based agroforestry systems: Influence of season, management and stand age
文献类型：期刊论文
| 作者 | Liu, Chenggang; Jin, Yanqiang; Liu, Changan; Tang, Jianwei ; Wang, Qingwei; Xu, Mingxi
|
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2018 |
| 卷号 | 616期号:x页码:1576-1588 |
| 关键词 | Land-use Change Organic Phosphorus Agricultural Soils Enzyme-activities Tropical Forest Cover Crops Rain-forest p Pools Dynamics Availability |
| ISSN号 | 0048-9697 |
| 英文摘要 | Rubber-based agroforestry system is a vital management practice and its productivity is often controlled by soil phosphorus (P) nutrient, but little information is available on P fractions dynamics in such system. The aim of this study was to examine the seasonal, management and stand age effects on P fractions, acid phosphatase activity, microbial biomass P, other physical-chemical properties and litter and roots in four systems: 10-year-old rubber mono-(YM) and intercropping (YI) with N-fixing species (NFS), 22-year-old mono-(MM) and intercropping (MI) in Xishuangbanna, Southwestern China. Most P fractions varied seasonally at different depths, with highest values in the fog-cool season (i.e. labile P at 5-60 cm, non-labile P and total P at 30-60 cm). By contrast, moderately labile P varied little over time, except in MI that had lower values in the rainy season. Compared with their monoculture counterparts, YI doubled resin-Pi concentration but decreased NaHCO3-extractable P, HCl-P-i and residual-P-o at the 0-30 cm depth, whereas MI had hardly any changes in P species at the 60-cm depth. Surprisingly, residual-P-o was enriched down to the deepest soil (30-60 cm) in both YI and MI in the fog-cool season. All P fractions, except NaOH0.1-P-i, were greatly reduced with increasing stand age. In addition to plants uptake, these changes can be explained by seasonality in soil environments (e.g. moisture, temperature, pH and microbial activity) and decomposition of litter and roots. Moreover, YI decreased labile P-o stock, but MI increased moderately labile P-i at the 60-cm depth across seasons. The results imply that a large amount of residual-P-o exists in acidic Oxisol from China and that they can be reasonably exploited to reduce the application of P fertilizers, highlighting the importance of P-o pool. Taken together, intercropping mature rubber plantation with NFS appears to be an effective way to enhance productivity while maintaining adequate soil P concentration over the long run. (c) 2017 Elsevier B.V. All rights reserved. |
| 学科主题 | Environmental Sciences & Ecology |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 公开日期 | 2018-03-07 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/10789]  |
| 专题 | 西双版纳热带植物园_2012年后新成立研究组 中国科学院西双版纳热带植物园 |
| 推荐引用方式 GB/T 7714 | Liu, Chenggang,Jin, Yanqiang,Liu, Changan,et al. Phosphorous fractions in soils of rubber-based agroforestry systems: Influence of season, management and stand age[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,616(x):1576-1588. |
| APA | Liu, Chenggang,Jin, Yanqiang,Liu, Changan,Tang, Jianwei,Wang, Qingwei,&Xu, Mingxi.(2018).Phosphorous fractions in soils of rubber-based agroforestry systems: Influence of season, management and stand age.SCIENCE OF THE TOTAL ENVIRONMENT,616(x),1576-1588. |
| MLA | Liu, Chenggang,et al."Phosphorous fractions in soils of rubber-based agroforestry systems: Influence of season, management and stand age".SCIENCE OF THE TOTAL ENVIRONMENT 616.x(2018):1576-1588. |
入库方式： OAI收割
来源：西双版纳热带植物园
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。