Analysis of Canopy Structure of Plant Communities in Mongolian Grasslands
蒙古草原植物群落冠层结构分析
基本信息
- 批准号:09041142
- 负责人:
- 金额:$ 4.1万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B).
- 财政年份:1997
- 资助国家:日本
- 起止时间:1997 至 1999
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We studied the nitrogen use efficiency (NUE) and water use efficiency (WUE) of species growing in a humidity gradient in Mongolian grasslands to examine if there is a trade-off between the two efficiencies. Total 131 species were collected from 7 sites. WUE was evaluated by the compositional deviation of ィイD113ィエD1C(δィイD113ィエD1C). NUE was evaluated as a reciprocal of leaf nitrogen concentration (LNC). Species in drier habitats tended to have higher WUE, but there was no such trend in NUE. No trade-off was found between WUE and NUE across species distributed in different climates. However, when the values for WUE and NUE were standardized against their means for species found more than three sites, WUE increased and NUE decreased with increasing aridity, indicating the trade-off between NUE and WUE within species. Only two (Cleistogenes squarrosa and Salsola passerina) out of 131 species were found to have the C4 metabolism.Effects of climate and grazing intensities on the structure of grassland vegetation were studied. We have established three exclosures in different climates : Partizan (mesic steppe), Tumentsogt (typical steppe) and Bayan-Unjuul (dry steppe). First year vegetation survey gave 45 species (including 7 grasses) in Partizan, 46 species (8 grasses) in Tumentsogt and 18 species (4 grasses) in Bayan-Unjuul. Aboveground biomass was 122 g dw mィイD2-2ィエD2 at Parizan, 122 at Tumentsogt, and 53 at Bayan-Unjuul. Difference between exclosure and grazing plots was small, probably because of the short time since establishment of the exclosure and an unusually dry summer in 1999.
我们研究了生长在蒙古草原湿度梯度中的物种的氮素利用效率(NUE)和水分利用效率(WUE),以检验这两种效率之间是否存在权衡。共采集7个采样点131种。用ィイD113ィエD1C(δィイD113ィエD1C)的组成偏差来评价WUE。氮素利用效率是叶片氮素浓度(LNC)的倒数。干旱生境中的物种往往具有较高的WUE,而NUE则没有这种趋势。在不同气候分布的树种间,水分利用效率和氮素利用效率之间不存在权衡。然而,当WUE和NUE的值相对于其平均值进行标准化时,发现3个以上的物种,WUE随干旱程度的增加而增加,而NUE则随着干旱程度的增加而减少,这表明了物种内NUE和WUE之间的权衡。在131种植物中,只有2种具有C4代谢,研究了气候和放牧强度对草地植被结构的影响。我们在不同的气候条件下建立了三个封育区:Partizan(中生草原)、Tumentsogt(典型草原)和Bayan-Unjuul(干燥草原)。第一年的植被调查表明,游击队有45种(含7种草),图门索格特有46种(8种),巴彦翁珠有18种(4种)。地上生物量在帕里赞为122g dw mィイD2-2ィエD2,在图门索格特为122,在巴彦翁珠尔为53。围栏和放牧地之间的差异很小,可能是因为围栏建立以来时间很短,而且1999年夏季异常干燥。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Hikosaka, K., Murakami, A. and Hirose, T.: "Balancing carboxylation and regeneration of ribulose-1,5-bisphosphate in leaf photosynthesis : temperature acclimation of an evergreen tree, Quercus myrsinaefolia"Plant, Cell and Environment. 22. 841-849 (1999)
Hikosaka, K.、Murakami, A. 和 Hirose, T.:“叶子光合作用中核酮糖 1,5-二磷酸的平衡羧化和再生:常绿树 Quercus myrsinaefolia 的温度驯化”植物、细胞和环境。
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Hikosaka K.: "Modelling optimal temperature acclimation of the photosynthetic apparatus in C_3 plants with respect to nitrogen use." Annals of Botany. 80. 721-730 (1997)
Hikosaka K.:“模拟 C_3 植物光合装置在氮利用方面的最佳温度驯化。”
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Anten N.P.R.,Hikosaka K.and HiroseT.: "Nitrogen utilisation and the photosynthetic system"In : B.Marshall and J.A.Roberts(eds)Leaf Development and Canopy Growth, Sheffield Academic Press, UK. (2000)
Anten N.P.R.、Hikosaka K. 和 Hirose T.:“氮利用和光合系统”,载于:B.Marshall 和 J.A.Roberts(编)叶发育和冠层生长,谢菲尔德学术出版社,英国。
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Anten N.P.R.and HiroseT.: "Interspecific differences in above-ground growth patterns result in spatial and temporal partitioning of light among species in a tall-grass meadow"Journal of Ecology. 87. 583-597 (1999)
Anten N.P.R.和 Hirose T.:“地上生长模式的种间差异导致高草草甸中物种间光的空间和时间分配”《生态学杂志》。
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Hikosaka,K.,Hanba,Y.T.,Hirose,T.and Terashima,I.: "Photosynthetic nitrogen use efficiency in woody and herbaceous plants." Functional Ecology. 12. 896-905 (1998)
Hikosaka,K.、Hanba,Y.T.、Hirose,T. 和 Terashima,I.:“木本和草本植物的光合氮利用效率。”
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HIROSE Tadaki其他文献
HIROSE Tadaki的其他文献
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{{ truncateString('HIROSE Tadaki', 18)}}的其他基金
PLANT ARCHITECTURE : TRADE-OFF BETWEEN GROWTH AND MECHANICAL STABILITY
工厂架构:生长与机械稳定性之间的权衡
- 批准号:
20370015 - 财政年份:2008
- 资助金额:
$ 4.1万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Costs and benefits in branching and the mechanical stability of plants
植物分枝和机械稳定性的成本和效益
- 批准号:
17370008 - 财政年份:2005
- 资助金额:
$ 4.1万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Application of canopy photosythesis models to the analysis of leaf phenology
冠层光合作用模型在叶片物候分析中的应用
- 批准号:
14340241 - 财政年份:2002
- 资助金额:
$ 4.1万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Effects of climate and nomadic activities on the development of grassland vegetation in Mongolia
气候和游牧活动对蒙古草原植被发育的影响
- 批准号:
12575003 - 财政年份:2000
- 资助金额:
$ 4.1万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Determinants of the reproductive yield of competing plants in a stand
林分中竞争植物繁殖产量的决定因素
- 批准号:
11440225 - 财政年份:1999
- 资助金额:
$ 4.1万 - 项目类别:
Grant-in-Aid for Scientific Research (B).
Competition and coexistence in plant community in relation to strategy of resource us
植物群落竞争与共存与资源利用策略
- 批准号:
08454248 - 财政年份:1996
- 资助金额:
$ 4.1万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Response of plant communities to elevated CO_2
植物群落对 CO_2 升高的反应
- 批准号:
07044176 - 财政年份:1995
- 资助金额:
$ 4.1万 - 项目类别:
Grant-in-Aid for international Scientific Research
Analysis of canopy structure of multi-species plant communities
多物种植物群落冠层结构分析
- 批准号:
06454007 - 财政年份:1994
- 资助金额:
$ 4.1万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
Modelling of canopy structure and nitrogen use in plant communities
植物群落冠层结构和氮利用建模
- 批准号:
04454007 - 财政年份:1992
- 资助金额:
$ 4.1万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
Functional analysis of canopy structure of grasslands
草原冠层结构功能分析
- 批准号:
04044027 - 财政年份:1992
- 资助金额:
$ 4.1万 - 项目类别:
Grant-in-Aid for international Scientific Research
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