遮荫对刈割互花米草生物量及渗透调节物质的影响
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摘要
以闽东滨海湿地分布的互花米草为研究对象,在野外开展为期3个月的刈割加不同遮荫率试验,测定互花米草生物量、游离脯氨酸、可溶性糖和可溶性蛋白含量等指标,分析不同遮荫率互花米草生物量和渗透调节物质的变化规律。结果表明:不同遮荫率对互花米草生物量、渗透调节物质有显著的影响,随着遮荫强度的加大,其生物量、可溶性糖、可溶性蛋白含量在不断减少,游离脯氨酸表现出增加的趋势。不同遮荫率互花米草叶生物量、茎生物量、样方内生物量、可溶性糖及可溶性蛋白含量均在90%遮荫处理达到最小值,分别为2.12、3.64、474.83 g、9.89、15.48 mg/g,分别占同期CK的43.35%、39.95%、45.16%、33.83%、33.04%,而游离脯氨酸含量在30%遮荫处理达到最小值58.42μg/g,在90%遮荫处理达到最大值241.59μg/g,说明高强度遮荫对互花米草生物量和渗透调节物质的影响更为显著,可以极大程度抑制互花米草的快速生长。各遮荫处理除了30%遮荫处理外,其他遮荫处理互花米草生物量、可溶性糖、可溶性蛋白以及游离脯氨酸含量与同期CK相比均存在显著差异。
Taking Spartina alterniflora distributed in Eastern Fujian coastal wetlands as the research object.In the field, a 3-month castration plus different shading tests were conducted to determine the biomass, free proline, soluble sugar and soluble protein content of S. alterniflora. The variation of biomass and osmotic adjustment substances of different shades of S. alterniflora was analyzed. The results show that Different shading rates have a significant effect on the biomass and osmotic adjustment substances of S. alterniflora. With the increase of shading intensity, the biomass, soluble sugar and soluble protein content of S. alterniflora are decreasing, and free proline shows an increasing trend. The leaf shading biomass, stem biomass, sample biomass, soluble sugar and soluble protein content of different shading rates reach the minimum at 90% shading treatment, which are 2.12, 3.64,474.83 g, 9.89 mg/g and 15.48 mg/g respectively, accounting for 43.35%, 39.95%, 45.16%, 33.83%, 33.04% of CK, respectively. The free proline content reaches a minimum of 58.42 μg/g at 30% shading and a maximum of241.59 μg/g at 90% shading, indicating high-intensity shading on S. alterniflora biomass and osmotic adjustment substances. The effect is more significant and can greatly inhibit the rapid growth of S. alterniflora. In addition to the 30% shading treatment, the shading treatment of S. alterniflora biomass, soluble sugar, soluble protein and free proline content ae significantly different from those of the same period.
Taking Spartina alterniflora distributed in Eastern Fujian coastal wetlands as the research object.In the field, a 3-month castration plus different shading tests were conducted to determine the biomass, free proline, soluble sugar and soluble protein content of S. alterniflora. The variation of biomass and osmotic adjustment substances of different shades of S. alterniflora was analyzed. The results show that Different shading rates have a significant effect on the biomass and osmotic adjustment substances of S. alterniflora. With the increase of shading intensity, the biomass, soluble sugar and soluble protein content of S. alterniflora are decreasing, and free proline shows an increasing trend. The leaf shading biomass, stem biomass, sample biomass, soluble sugar and soluble protein content of different shading rates reach the minimum at 90% shading treatment, which are 2.12, 3.64,474.83 g, 9.89 mg/g and 15.48 mg/g respectively, accounting for 43.35%, 39.95%, 45.16%, 33.83%, 33.04% of CK, respectively. The free proline content reaches a minimum of 58.42 μg/g at 30% shading and a maximum of241.59 μg/g at 90% shading, indicating high-intensity shading on S. alterniflora biomass and osmotic adjustment substances. The effect is more significant and can greatly inhibit the rapid growth of S. alterniflora. In addition to the 30% shading treatment, the shading treatment of S. alterniflora biomass, soluble sugar, soluble protein and free proline content ae significantly different from those of the same period.
引文
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[22]袁琳,张利权,肖德荣,等.刈割与水位调节集成技术控制互花米草(Spartina alterniflora)[J].生态学报,2008,28(11):5723-5730.
[23]Tang L,Gao Y,Wang J Q,et al.Designing an effective clipping regime for controlling the invasive plant Spartina alterniflora in an estuarine salt marsh[J].Ecological Engineering,2009,35(5):874-881.
[2]徐伟伟,王国祥,刘金娥,等.苏北海滨湿地互花米草种群繁殖方式[J].生态学报,2014,34(14):3839-3847.
[3]Liu W W,Maung-Douglass K,Strong D R,et al.Geographical variation in vegetative growth and sexual reproduction of the invasive Spartina alterniflora in China[J].Journal of Ecology,2016,104(1):173-181.
[4]苏少川,何东进,王韧,等.闽东滨海湿地生态系统服务功能价值评估[J].湿地科学与管理,2012,8(3):14-18.
[5]何东进,郑开基,王韧,等.闽东湿地重金属污染特征与生态风险评价[J].武夷科学,2009,25(1):44-49.
[6]谷兴华,廖宝文,朱宁华,等.遮荫对互花米草生长影响的初步研究[J].中国森林病虫,2010,29(3):34-36.
[7]赵相健,李俊生,柳晓燕,等.刈割加遮荫对互花米草生长和存活的影响[J].广西植物,2017,37(3):303-307.
[8]和春雷.刈割防治对互花米草的影响[D].福州:福建农林大学,2010.
[9]李威威,何东进,严思晓,等.互花米草入侵对闽东滨海湿地红树林土壤物理性质的影响分析[J].林业资源管理,2018(2):151-156.
[10]张嘉诚,何东进,游巍斌,等.互花米草入侵对霞浦滨海湿地景观的影响[J].森林与环境学报,2018,38(3):302-308.
[11]赵紫檀,郑洁,吴则焰,等.互花米草入侵下红树林土壤微生物群落特征[J].森林与环境学报,2017,37(2):169-173.
[12]袁连奇,张利权.调控淹水对互花米草生理影响的研究[J].海洋与湖沼,2010,41(2):175-179.
[13]谭勇,何东进,游巍斌,等.闽东滨海湿地入侵种互花米草表型可塑性及生物量分配对潮位梯度的响应[J].应用与环境生物学报,2014,20(5):863-868.
[14]Zhao L L,You W B,Hu H Q,et al.Spatial distribution of heavy metals(Cu,Pb,Zn,and Cd)in sediments of a coastal wetlands in eastern Fujian,China[J].Journal of Forestry Research,2015,26(3):703-710.
[15]侯栋梁,何东进,游巍斌,等.互花米草幼苗对NaCl和CdCl2交互胁迫的生理响应研究[J].西南林业大学学报,2016,36(6):15-21.
[16]熊贤荣,欧静,龙海燕,等.干旱胁迫对桃叶杜鹃菌根苗生长的影响[J].西南林业大学学报(自然科学),2018,38(1):34-40.
[17]戴文君,陆海燕,杨梅,等.稀土元素镧、铈对擎天树幼苗生长量的影响[J].西南林业大学学报(自然科学),2018,38(1):10-15.
[18]岳海涛,孙大成,许俊萍,等.基于叶片性状间相关性分析的石斛属植物的水分适应策略[J].西部林业科学,2017,46(4):113-120.
[19]张炯森.覆盖对互花米草生理特性和生长的影响[J].福建林业科技,2016,43(3):72-75.
[20]利容千,王建波.植物逆境细胞及生理学[M].武汉:武汉大学出版社,2002.
[21]王凯.遮荫对百子莲生物量的影响[J].农业科技与信息(现代园林),2012,9(2):77-80.
[22]袁琳,张利权,肖德荣,等.刈割与水位调节集成技术控制互花米草(Spartina alterniflora)[J].生态学报,2008,28(11):5723-5730.
[23]Tang L,Gao Y,Wang J Q,et al.Designing an effective clipping regime for controlling the invasive plant Spartina alterniflora in an estuarine salt marsh[J].Ecological Engineering,2009,35(5):874-881.