太湖水生植物氮磷与湖水和沉积物氮磷含量的关系

doi:10.3773/j.issn.1005-264x.2008.02.018

植物生态学报 ›› 2008, Vol. 32 ›› Issue (2): 402-407.DOI: 10.3773/j.issn.1005-264x.2008.02.018

太湖水生植物氮磷与湖水和沉积物氮磷含量的关系

雷泽湘¹^,², 徐德兰³, 谢贻发², 刘正文²^,⁴^,^*()

1 仲恺农业技术学院环境科学与工程系,广州 510225
2 暨南大学水生生物研究所,广州 510632
3 徐州工程学院环境工程系,江苏徐州 221008
4 中国科学院南京地理与湖泊研究所,南京 210008

收稿日期:2006-11-20 接受日期:2007-09-29 出版日期:2008-11-20 发布日期:2008-03-30
通讯作者: 刘正文
作者简介:* E-mail: zliu99@126.com
基金资助:
中国科学院知识创新重大项目(KZCX1-SW-12);国家863计划项目(2002AA601011)

RELATIONSHIP BETWEEN N AND P CONTENTS IN AQUATIC MACROPHYTES, WATER AND SEDIMENT IN TAIHU LAKE, CHINA

LEI Ze-Xiang¹^,², XU De-Lan³, XIE Yi-Fa², LIU Zheng-Wen²^,⁴^,^*()

¹Department of Environmental Science and Engineering, Zhongkai University of Agriculture and Technology, Guangzhou 510225, China
²Institute of Hydrobiology of Jinan University, Guangzhou 510632, China
³Department of Environmental Engineering, Xuzhou Institute of Technology, Xuzhou, Jiangsu 221008, China
⁴Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China

Received:2006-11-20 Accepted:2007-09-29 Online:2008-11-20 Published:2008-03-30
Contact: LIU Zheng-Wen

摘要/Abstract

摘要：

分析了太湖沉水植物、浮叶植物组织及生长环境中的N、P含量,结果表明:太湖沉水植物组织N、P含量一般要高于浮叶植物组织,5月的N、P含量(以干重计)一般高于9月。5月以沉水植物微齿眼子菜(Potamogeton maackianus)的N(28.452 mg·g^-1)、轮叶黑藻(Hydrilla verticillata)的P(4.552 mg·g^-1)含量最高,浮叶植物荇菜(Nymphoides peltatum)的N(14.363 mg·g^-1)、P(1.792 mg·g^-1)含量均为最低;9月以沉水植物苦草(Vallisneria natans)的N(25.206 mg·g^-1)、P(2.727 mg·g^-1)含量最高,浮叶植物荇菜的N(17.245 mg·g^-1)、P(1.519 mg·g^-1)含量均最低。沉水和浮叶植物的N、P含量与水体N、P浓度的相关性较为显著;与沉积物N、P的相关性不明显。此外,植物体内的N、P含量亦与植物物种的特性、生长发育阶段和生长状况等内在因素密切相关。

关键词: 太湖, 沉水植物, 浮叶植物, N、P含量, 相关性

Abstract:

Aims Our objectives were to 1) examine relationships between N and P contents in aquatic macrophytes, water and sediment in Taihu Lake, a eutrophic ecosystem, and 2) explore factors controlling N and P contents in plants in relation to plant characters, such as growth status and developmental stage.
Methods We selected 32 sampling sites in the emerging-plants-free water zone of Taihu Lake and collected plant samples twice with the quadrat method, sampled sediment with column-shaped samplers at different depths, and measured relevant parameters. Concentrations of total phosphorus and total nitrogen of sediment samples with and without macrophytes were measured with the Kjeldahl method and ICP-AES atomic absorption spectrometry, respectively, and those in tissues of aquatic plants were measured by Kjeldahl automatic N analyzer and molybdate-ascorbic colorimetric determination, respectively.
Important findings The N and P contents of tissues of submerged macrophytes were higher than floating-leaved macrophytes, and the nutrient contents were higher in May than in September. Significant correlations were found between the concentrations of N and P in plants and in water, but not in sediments. The N and P contents in plants were highly dependent on plant growth status and developmental stage. Our study provides the insight for the restoration of the eutrophic Taihu Lake ecosystem.

Key words: Taihu Lake, submerged macrophytes, floating-leaved macrophytes, contents of N and P, correlations

雷泽湘, 徐德兰, 谢贻发, 刘正文. 太湖水生植物氮磷与湖水和沉积物氮磷含量的关系. 植物生态学报, 2008, 32(2): 402-407. DOI: 10.3773/j.issn.1005-264x.2008.02.018

LEI Ze-Xiang, XU De-Lan, XIE Yi-Fa, LIU Zheng-Wen. RELATIONSHIP BETWEEN N AND P CONTENTS IN AQUATIC MACROPHYTES, WATER AND SEDIMENT IN TAIHU LAKE, CHINA. Chinese Journal of Plant Ecology, 2008, 32(2): 402-407. DOI: 10.3773/j.issn.1005-264x.2008.02.018

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链接本文: https://www.plant-ecology.com/CN/10.3773/j.issn.1005-264x.2008.02.018

https://www.plant-ecology.com/CN/Y2008/V32/I2/402

图/表 6

参考文献 24

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		5月 May					9月 September
		全太湖 Taihu Lake	有草区 The area with macrophytes		无草区 The area without macrophytes		全太湖 Taihu Lake	有草区 The area with macrophytes	无草区 The area without macrophytes
水样 Water sample	TN (mg·L^-1)	4.668±0.525^b		2.297±0.305^c		6.512±0.612^a	2.773±0.264^ab	1.993±0.329^b	3.380±0.320^a
	TP (mg·L^-1)	0.104±0.009^a		0.067±0.007^b		0.133±0.011^a	0.094±0.012^a	0.050±0.005^b	0.129±0.016^a
沉积物 Sediment	TN (mg·g^-1)	0.846±0.141		0.996±0.024		0.672±0.012	-	-	-
	TP1 (mg·g^-1)	0.460±0.052		0.399±0.09		0.513±0.058	0.566±0.05	0.576±0.089	0.553±0.021
	TP2 (mg·g^-1)	0.425±0.04		0.338±0.045		0.513±0.06	0.533±0.028	0.491±0.035	0.589±0.043

		5月 May					9月 September
		全太湖 Taihu Lake	有草区 The area with macrophytes		无草区 The area without macrophytes		全太湖 Taihu Lake	有草区 The area with macrophytes	无草区 The area without macrophytes
水样 Water sample	TN (mg·L^-1)	4.668±0.525^b		2.297±0.305^c		6.512±0.612^a	2.773±0.264^ab	1.993±0.329^b	3.380±0.320^a
	TP (mg·L^-1)	0.104±0.009^a		0.067±0.007^b		0.133±0.011^a	0.094±0.012^a	0.050±0.005^b	0.129±0.016^a
沉积物 Sediment	TN (mg·g^-1)	0.846±0.141		0.996±0.024		0.672±0.012	-	-	-
	TP1 (mg·g^-1)	0.460±0.052		0.399±0.09		0.513±0.058	0.566±0.05	0.576±0.089	0.553±0.021
	TP2 (mg·g^-1)	0.425±0.04		0.338±0.045		0.513±0.06	0.533±0.028	0.491±0.035	0.589±0.043

	1	2	3	4	5	6	7	8	9	10	11	均值 Mean
TN (5月 May)	0.818^*	0.870^**	0.372	0.860^**	0.526	-0.220	0.998^**	0.979^*	0.985^*	0.982^*	-	0.652^*
TN (9月 Sept.)	-0.770^*	-0.758^*	0.322	-0.472	0.458	0.746	0.647	-	0.989^*	0.077	0.907	-0.328
TP (5月 May)	0.203	0.267	0.310	0.710^*	0.732	0.950^**	0.682	0.981^*	0.964^*	0.894	-	0.213
TP (9月 Sept.)	0.239	0.213	0.314	0.915^**	0.454	0.763	-0.200	-	0.994^**	0.126	0.906	0.602^*

	1	2	3	4	5	6	7	8	9	10	11	均值 Mean
TN (5月 May)	0.818^*	0.870^**	0.372	0.860^**	0.526	-0.220	0.998^**	0.979^*	0.985^*	0.982^*	-	0.652^*
TN (9月 Sept.)	-0.770^*	-0.758^*	0.322	-0.472	0.458	0.746	0.647	-	0.989^*	0.077	0.907	-0.328
TP (5月 May)	0.203	0.267	0.310	0.710^*	0.732	0.950^**	0.682	0.981^*	0.964^*	0.894	-	0.213
TP (9月 Sept.)	0.239	0.213	0.314	0.915^**	0.454	0.763	-0.200	-	0.994^**	0.126	0.906	0.602^*

	1	2	3	4	5	6	7	8	9	10	11
TN (5月 May)	0.609	0.895^**	-0.569	0.761^*	0.606	0.189	0.421	0.913^*	-0.447	-0.461	-
TN (9月 Sept.)	-0.034	0.439	0.232	-0.867	0.362	-0.263	0.363	-	0.814	-0.591	0.778
TP1 (5月 May)	-0.354	-0.579	0.213	-0.720^*	-0.520	-0.412	-0.438	-0.694	0.804	0.882^*	-
TP2 (5月 May)	0.291	-0.253	-0.084	-0.467	-0.769^*	-0.420	-0.627	-0.293	-0.383	-0.999^**	-
TP1 (9月 Sept.)	-0.034	-0.978^**	0.019	-0.024	0.275	0.058	-0.341	-	-0.369	-0.943^**	0.995^**
TP2 (9月 Sept.)	0.599	-0.980^**	0.241	-0.067	-0.073	-0.099	0.482	-	0.853	0.685	-0.051

太湖水生植物氮磷与湖水和沉积物氮磷含量的关系

RELATIONSHIP BETWEEN N AND P CONTENTS IN AQUATIC MACROPHYTES, WATER AND SEDIMENT IN TAIHU LAKE, CHINA

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