几种收割策略下轮叶黑藻(Hydrilla verticillata)的生长恢复研究
The Vegetative Recovery of Hydrilla verticillata Under Several Harvesting Strategies
查看参考文献23篇
文摘
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2005年5月中旬至10月下旬,在水深为24cm的桶中,以水面下6、12、18cm等3个收割强度对轮叶黑藻(Hydrilla verticillata)分别进行了连续4次收割实验,研究收割强度、收割频次对其生长恢复的影响。结果表明,温度相近时,收割强度较高或收割频数增加将延长轮叶黑藻的恢复时间。以18cm强度收割第2次、第3次后,轮叶黑藻需近2个月的时间恢复;以12cm强度第3次收割后,需43d恢复;其余各次收割后,轮叶黑藻均在1个月内恢复。8月下旬,以18cm强度收割第3次后,普通枝条及匍匐枝的数目与总长明显减少,从而抑制了轮叶黑藻以匍匐枝和冬芽进行无性繁殖。其他各次收割均处于轮叶黑藻旺盛生长的季节,收割后,普通枝条和匍匐枝的数目和总长明显增加,将不会抑制植物的无性繁殖。各次收割后至少75%的新生枝条从基部萌生,这些枝条成为生长最为旺盛的部分。在各处理组中,轮叶黑藻干重的相对增长率随收割次数的增加呈现较明显的下降趋势,而根冠比随着收割次数的增多而增大。 |
其他语种文摘
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The effects of cutting intensity and frequency on the vegetative recovery of Hydrilla verticillata,grown in buckets with a water depth of 24 cm,were investigated in a series of 4 consecutive experiments with different cutting intensities at 6 cm,12 cm and 18 cm from the apex of the plants,respectively through mid-May to late October,2005.The results showed that both high cutting intensity and high cutting frequency prolonged the time of vegetative recovery of H.verticillata when the temperature variation was negligible.A period of 2 months was needed for the recovery of plants being cut off at 18 cm from the apex after the second and the third cut-offs,and 43 days for plants cut at 12 cm from the apex after the third cut-off,and less than a month for the rest cut-offs.In late August,the number and length of both the normal shoots and the stolons declined significantly after the third cut-off at 18 cm from the apex of the plants,so the asexual propagation in the form of stolons or winter buds would be inhibited.All the other cutting time were within the booming season for H.verticillata,the number and the total length of normal shoots and stolons increased significantly after each cut-off,therefore the asexual propagation would not be inhibited.More than 75% of the new shoots were generated from the basal part of the plants after every cut-off,and those shoots constituted the fastest growing parts of the plants.Along with the increase in the times of cut-offs in all experimental groups,the relative increase rate of dry weight in H.verticillata declined significantly,but the root-shoot ratio increased. |
来源
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农业环境科学学报
,2011,30(7):1391-1397 【核心库】
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关键词
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富营养化
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收割策略
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轮叶黑藻
;
生长恢复
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地址
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中国科学院水生生物研究所, 淡水生态与生物技术国家重点实验室, 武汉, 430072
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1672-2043 |
学科
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环境科学基础理论 |
基金
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国家“十一五”水专项
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国家自然科学基金
;
中国科学院天津专项
;
鲁东大学基金
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文献收藏号
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CSCD:4264964
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参考文献 共
23
共2页
|
1.
秦伯强. 长江中下游浅水湖泊富营养化发生机制与控制途径初探.
湖泊科学,2002,14(3):193-202
|
被引
221
次
|
|
|
|
2.
金相灿. 湖泊富营养化研究中的主要科学问题——代“湖泊富营养化研究”专栏序言.
环境科学学报,2008,28(1):21-23
|
被引
40
次
|
|
|
|
3.
Engel S.
Ecosystem responses to growth and control of submerged macrophytes:a literature review.Wisconsin Department of Natural Resources,Technical Bulletin Number 170:1-20
|
被引
1
次
|
|
|
|
4.
金相灿.
湖泊富营养化控制和管理技术,2001
|
被引
124
次
|
|
|
|
5.
Gumbricht T. Nutrient removal processes in freshwater submersed macrophyte systems.
Ecological Engineering,1993,2(1):1-30
|
被引
33
次
|
|
|
|
6.
吴振斌. 沉水植物重建对富营养水体氮磷营养水平的影响.
应用生态学报,2003,14(8):1351-1353
|
被引
114
次
|
|
|
|
7.
James W F. Sediment resuspension and light attenuation in Peoria Lake:Can macrophytes improve water quality in this shallow system.
Hydrobiologia,2004,515:193-201
|
被引
14
次
|
|
|
|
8.
郭怀成. 滇池水体富营养化特处分析及控制对策探讨.
地理科学进展,2002,21(5):500-506
|
被引
34
次
|
|
|
|
9.
陈开宁. 太湖五里湖生态重建示范工程——大型围隔试验.
湖泊科学,2006,18(2):139-149
|
被引
47
次
|
|
|
|
10.
马剑敏. 武汉月湖水生植被重建的实践与启示.
水生生物学报,2009,33(2):222-229
|
被引
20
次
|
|
|
|
11.
Carpenter S R. Effects of submersed macrophytes on ecosystem processes.
Aquatic Botany,1986,26:341-370
|
被引
77
次
|
|
|
|
12.
Pereira A. A model for decomposition of the down vegetation in an Amazonian Reservoir.
Ecological Modelling,1994,75/76:447-458
|
被引
4
次
|
|
|
|
13.
尚士友. 草型湖泊沉水植物收割工程对生态改善的试验.
农业工程学报,2003,19(6):95-100
|
被引
12
次
|
|
|
|
14.
李国新. 黑藻吸附Cd~(2+)和Cu~(2+)的拓展Langmuir模型研究.
农业环境科学学报,2010,29(1):145-151
|
被引
9
次
|
|
|
|
15.
颜昌宙. 不同浓度氨氮对轮叶黑藻的生理影响.
生态学报,2007,27(3):1050-1055
|
被引
54
次
|
|
|
|
16.
Altamirano M. Effects of UV radiation and temperature on growth of germlings of three species of Fucus(Phaeophyceae).
Aquatic Botany,2003,75(1):9-20
|
被引
7
次
|
|
|
|
17.
王静. 刈割强度对冷蒿可溶性碳水化合物的影响.
生态学报,2003,23(5):908-913
|
被引
16
次
|
|
|
|
18.
Fulkerson W J. Plant-soluble carbohydrate reserves and senescence-key criteria for developing an effective grazing management system for ryegrass-based pastures:A review.
Australian Journal of Experimental Agriculture,2001,41(2):261-275
|
被引
10
次
|
|
|
|
19.
鲍雅静. 不同频次刈割对羊草草原主要植物种群能量现存量的影响.
植物学通报,2005,22(2):153-162
|
被引
14
次
|
|
|
|
20.
原保忠. 苗期刈割伤害对春小麦生长及产量的影响.
应用生态学报,2002,13(4):413-416
|
被引
6
次
|
|
|
|
|