Arid
NEEDLEFALL RETURNS AND RESORPTION RATES OF NUTRIENTS IN YOUNG INTENSIVELY MANAGED SLASH AND LOBLOLLY-PINE STANDS
DALLATEA, F; JOKELA, EJ
通讯作者DALLATEA, F
来源期刊FOREST SCIENCE
ISSN0015-749X
出版年1994
卷号40期号:4页码:650-662
英文摘要

Annual needlefall (NF) returns and resorption rates of nutrients in 6-yr-old slash (Pinus elliottii Engelm. var. elliottii) and loblolly (P. taeda L.) pine stands were investigated using a 2 x 2 x 2 factorial experiment (species, annual fertilization, sustained competition control) in north central Florida. Compared with the reference (untreated), the combination treatment (annual fertilizer plus competition control) increased NF N returns about 6.3-fold (from 2.5 to 15.8 kg ha(-1)) for slash pine and 13.3-fold (from 1.5 to 19.9 kg ha(-1)) for loblolly pine. Similar treatment effects were found for P, with recycling rates for loblolly pine greater than for slash pine. Absolute resorption rates of N (from 4.7 to 19.9 kg ha(-1) for slash pine; 2.5 to 21.1 kg ha(-1) for loblolly pine) and P (from 0.5 to 1.9 kg ha(-1) for slash pine; 0.2 to 2.4 kg ha(-1) for loblolly pine) increased for both species as management intensity increased (i.e., cultural treatments; reference vs. fertilizer plus competition control). However, specific resorption rates of N and P were lowest for fertilizer treatments. When averaged over all cultural treatments, slash pine resorbed more N (62 vs. 57%) and P (62 vs. 51%) than loblolly pine; approximately 26% of the annual P requirements for slash pine were met by reabsorption compared with 13% for loblolly pine. Nutrient pool size within the plant (uptake) and annual nutrient demands for growth were dominant factors influencing the nature and extent of N and P resorption for both pine species.


英文关键词FERTILIZATION NITROGEN NUTRIENT RETRANSLOCATION PHOSPHORUS PINUS ELLIOTTII P-TAEDA COMPETITION CONTROL
类型Article
语种英语
收录类别SCI-E
WOS记录号WOS:A1994PT41800005
WOS关键词DESERT EVERGREEN SHRUB ; LARREA-TRIDENTATA ; ORGANIC-MATTER ; USE EFFICIENCY ; NITROGEN ; PHOSPHORUS ; RETRANSLOCATION ; PLANTATIONS ; ECOSYSTEMS ; FRACTIONS
WOS类目Forestry
WOS研究方向Forestry
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/130020
推荐引用方式
GB/T 7714
DALLATEA, F,JOKELA, EJ. NEEDLEFALL RETURNS AND RESORPTION RATES OF NUTRIENTS IN YOUNG INTENSIVELY MANAGED SLASH AND LOBLOLLY-PINE STANDS[J],1994,40(4):650-662.
APA DALLATEA, F,&JOKELA, EJ.(1994).NEEDLEFALL RETURNS AND RESORPTION RATES OF NUTRIENTS IN YOUNG INTENSIVELY MANAGED SLASH AND LOBLOLLY-PINE STANDS.FOREST SCIENCE,40(4),650-662.
MLA DALLATEA, F,et al."NEEDLEFALL RETURNS AND RESORPTION RATES OF NUTRIENTS IN YOUNG INTENSIVELY MANAGED SLASH AND LOBLOLLY-PINE STANDS".FOREST SCIENCE 40.4(1994):650-662.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[DALLATEA, F]的文章
[JOKELA, EJ]的文章
百度学术
百度学术中相似的文章
[DALLATEA, F]的文章
[JOKELA, EJ]的文章
必应学术
必应学术中相似的文章
[DALLATEA, F]的文章
[JOKELA, EJ]的文章
相关权益政策
暂无数据
收藏/分享

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。