| 查看: 534 | 回复: 1 | |||
upzl铁杆木虫 (著名写手)
|
[交流]
贫瘠的森林，高效的生产！ 已有1人参与
|
|
题目就很有意思，和我们平时想象的很不一样。 Fertile forests produce biomass more efficiently S. Vicca1,*, S. Luyssaert2, J. Peñuelas3, M. Campioli1, F. S. Chapin III4, P. Ciais2, A. Heinemeyer5, P. Högberg6, W. L. Kutsch7, B. E. Law8, Y. Malhi9, D. Papale10, S. L. Piao11, M. Reichstein12, E. D. Schulze12, I. A. Janssens1 Ecology Letters (2012) Article first published online: 4 APR 2012 DOI: 10.1111/j.1461-0248.2012.01775.x Abstract Trees with sufficient nutrition are known to allocate carbon preferentially to aboveground plant parts. Our global study of 49 forests revealed an even more fundamental carbon allocation response to nutrient availability: forests with high-nutrient availability use 58 ± 3% (mean ± SE; 17 forests) of their photosynthates for plant biomass production (BP), while forests with low-nutrient availability only convert 42 ± 2% (mean ± SE; 19 forests) of annual photosynthates to biomass. This nutrient effect largely overshadows previously observed differences in carbon allocation patterns among climate zones, forest types and age classes. If forests with low-nutrient availability use 16 ± 4% less of their photosynthates for plant growth, what are these used for? Current knowledge suggests that lower BP per unit photosynthesis in forests with low- versus forests with high-nutrient availability reflects not merely an increase in plant respiration, but likely results from reduced carbon allocation to unaccounted components of net primary production, particularly root symbionts. |
回复此楼» 猜你喜欢
282求调剂
已经有0人回复
-
地质学复试调剂
已经有1人回复
-
地质学论文润色/翻译怎么收费?
已经有267人回复
» 本主题相关价值贴推荐，对您同样有帮助:
- 药品生产企业的高效液相色谱仪需要计量局等权威部门进行计量才可使用吗？
已经有14人回复
- 生产染料敏化太阳能电池的厂家
已经有4人回复
- 请各位大侠帮忙：氨曲南的生产能否在青霉素车间？？？谢谢！~
已经有8人回复
- 三种植物分别是什么名字？属于什么科？
已经有14人回复
- 求资料：半导体LED发光材料的应用及生产工艺
已经有7人回复
- 【求助】改行了学分析，公司是生产生物柴油;C10-16-脂肪酸甲基酯等产品的，要知道哪些
已经有13人回复
- 【讨论】职业发展中最悲哀的两个状况一是拼命的在贫瘠的土地上耕耘
已经有3人回复
- 亚氯酸钠工业生产工艺及主要污染物
已经有4人回复
goodlucky8
木虫 (正式写手)
- 应助: 1 (幼儿园)
- 金币: 1822.7
- 散金: 1
- 红花: 1
- 帖子: 452
- 在线: 82.7小时
- 虫号: 817236
- 注册: 2009-07-28
- 专业: 保护生物学与恢复生态学
2楼2012-04-15 11:28:39
