Root growth dynamics during recovery of tropical mountain forest in North-east India
文献类型：期刊论文
| 作者 | Lalnunzira, Chalthleng; Brearley, Francis Q.; Tripathi, Shri Kant |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2019 |
| 卷号 | 16期号:10页码:2335-2347 |
| ISSN号 | 1672-6316 |
| 关键词 | Total root biomass Element return Regenerating forest Root production and turnover Anthropogenic disturbance |
| DOI | 10.1007/s11629-018-5303-9 |
| 文献子类 | Article |
| 英文摘要 | Ever increasing pressures on tropical forests worldwide due to anthropogenic disturbances have greatly affected both above- and belowground functioning of these forests. While fine roots play major ecological roles in forests through assisting in nutrient and water uptake and returning elements to the soil environment, coarse roots play an important role in C sequestration. We studied changes in fine and coarse root biomass, production, turnover and carbon and nitrogen return to the soil in two regenerating forest stands (RFs) following stone-mining that were 5 years (RF-5) and 15 years (RF-15) post-disturbance compared with a natural forest stand (NF) in Mizoram, North-east India. Fine (< 2 mm) and coarse root (2-10 mm) biomass differed significantly among the forest stands and ranged from 239 (RF-5) to 415 (NF) and 230 (RF-5) to 436 (NF) gm(-2), respectively. Total root (fine + coarse) biomass increased during stand development but the proportion of very fine root (< 0.5 mm) to total root production decreased. Fine root biomass decreased with increasing soil depth. Fine and total root biomass showed strong seasonal correlations with soil moisture, more so than for rainfall and temperature, whereas these relationships were less clear for the coarse root biomass. The amount of N (25-55 kg ha(-1)) and C (1.9-3.6 t ha(-1)) stored in root biomass increased with stand age with a corresponding increase in production and turnover of C and N to the soil. Disturbance to these tropical forests negatively affected root dynamics, influenced their spatio-temporal patterns, and reduced the production, amount and availability of nutrients returned to the soil along with a strong reduction in the root biomass carbon pool and sequestration in carbon residence time. We observed that root growth, especially fine roots, is dependent on abiotic variables, and plays a significant role in early stages of secondary succession by adding organic matter and nutrients through high turnover rates in these forests. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000489956000010 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46596]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.10 |
| 推荐引用方式 GB/T 7714 | Lalnunzira, Chalthleng,Brearley, Francis Q.,Tripathi, Shri Kant. Root growth dynamics during recovery of tropical mountain forest in North-east India[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(10):2335-2347. |
| APA | Lalnunzira, Chalthleng,Brearley, Francis Q.,&Tripathi, Shri Kant.(2019).Root growth dynamics during recovery of tropical mountain forest in North-east India.JOURNAL OF MOUNTAIN SCIENCE,16(10),2335-2347. |
| MLA | Lalnunzira, Chalthleng,et al."Root growth dynamics during recovery of tropical mountain forest in North-east India".JOURNAL OF MOUNTAIN SCIENCE 16.10(2019):2335-2347. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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。