泉州湾互花米草入侵滩涂中人工种植秋茄幼苗的叶片营养元素动态特征
摘要: 于福建泉州湾洛阳江河口湿地保护区内互花米草入侵红树林生态修复滩涂内,采集并测定了种植后第2年的红树植物秋茄(Kandelia obovata)生长周期内(2017年6月—2018年3月)的叶片C、N、P含量及地上生物量,以阐明2年生秋茄的C、N、P营养元素含量与化学计量比随时间动态特征及其控制因子,了解红树植物秋茄在互花米草入侵地区生长第2年的养分利用与元素限制条件。结果显示:2年生秋茄叶片全碳含量为363.12~425.75 g·kg-1;叶全氮含量为17.37~18.22 g·kg-1;叶全磷含量为1.33~4.06 g·kg-1。秋茄叶片C∶N、C∶P、N∶P随季节时间变化均呈现先下降后上升的趋势。研究表明,泉州湾滨海湿地秋茄在第2年生长周期内对营养元素的利用效率较好,氮元素可能是泉州湾河口湿地2年生秋茄的主要限制元素。研究结果为利用秋茄替代互花米草的生态入侵综合治理及红树林的人工种植养护提供了科学依据。
关键词: 尖孢镰刀菌苦瓜专化型, 遗传多样性, 瓜类枯萎病菌, SRAP
Abstract: This study aimed to clarify the dynamic characteristics of and control factors on major nutrient element (C, N, P) contents and stoichiometric ratio in leaves of two-yearold mangroveKandelia obovata, and to understand nutrient use characteristics and nutrient limitation status of K. obovata in the second year after planting in Sporobolus alterniflorus invaded Luoyang River Estuary Wetland Reserve in Quanzhou Bay, Fujian Province. The C, N, P contents in leaves and aboveground biomass ofK. obovata during the growing season (June 2017-March 2018) in the second year after planting were measured. Results showed that total carbon content in leaves of two-year-old K. obovata ranged from 363.12 to 425.75 g·kg-1. The range of total nitrogen content was 17.37-18.22 g·kg-1, and the range of total phosphorus content was 1.33-4.06 g·kg-1. The C∶N, C∶P, N∶P ratios of K. obovata leaves changed seasonally, showing a downward and then an upward trend. These results indicated high nutrient use efficiency in the two-year-oldK. obovata in coastal wetlands of Quanzhou Bay, and that nitrogen was the major limiting element of the two-year-oldK. obovata. Our results provided scientific guidance for comprehensive management of the replacement of invasive species S. alterniflorus with K. obovata, as well as the artificial planting and maintenance of mangroves.
Key words: Fusarium oxysporum of cucurbitaceae, SRAP, genetic diversity, Fusarium oxysporum f. sp. momordicae.
相关知识
泉州湾互花米草入侵滩涂中人工种植秋茄幼苗的叶片营养元素动态特征
入侵植物互花米草防治:理念、技术与实践
湿地、入侵互花米草及生态系统服务功能货币化
上世纪80年代泉州湾部分滩涂引进的互花米草,很快挤占了红树林的生存空间。互花米草种群中具有高株和矮株两种株型,在增氮(增加土壤氮元素)环境中,互花米草不同株型间
外来植物互花米草入侵对土壤生态系统的影响研究进展
互花米草生物量年动态及其与滩涂生境的关系
互花米草除治攻坚,福建这么干
互花米草入侵对漳江口红树林湿地土壤有机碳官能团特征的影响
“海岸卫士”互花米草:想再爱你不容易
互花米草对潮滩生态服务功能的影响.docx
网址: 泉州湾互花米草入侵滩涂中人工种植秋茄幼苗的叶片营养元素动态特征 https://www.huajiangbk.com/newsview105653.html
上一篇: 8种“漂亮花”,春天赶紧种,俩月 |
下一篇: 花月鲜花app下载 |
推荐分享

- 1君子兰什么品种最名贵 十大名 4012
- 2世界上最名贵的10种兰花图片 3364
- 3花圈挽联怎么写? 3286
- 4迷信说家里不能放假花 家里摆 1878
- 5香山红叶什么时候红 1493
- 6花的意思,花的解释,花的拼音 1210
- 7教师节送什么花最合适 1167
- 8勿忘我花图片 1103
- 9橄榄枝的象征意义 1093
- 10洛阳的市花 1039