滇池流域农田生态沟渠杂草氮磷富集效应的研究

何明珠; 夏体渊; 李立池; 达良俊

滇池流域农田生态沟渠杂草氮磷富集效应的研究

1.
华东师范大学环境科学系,上海 200062;
2.
云南省农业科学院国际合作处,昆明 650205

详细信息

中图分类号: Q948
计量
- 文章访问数: 2664
- HTML全文浏览量: 19
- PDF下载量: 2056
- 被引次数: 0
出版历程
- 收稿日期: 2011-06-01
- 修回日期: 2011-09-01
- 刊出日期: 2012-07-25

Research on the effects of weed nitrogen and phosphorus enrichment in natural approximating ecological agro-ditches of Dianchi Lake basin

1.
Department of Environment Science, East China Normal University, Shanghai 200062, China;
2.
International Cooperation Division, Yunnan Academy of Agricultural Sciences, Kunming 650205, China

摘要

摘要: 通过研究滇池柴河流域不同时期农田近自然生态沟渠杂草对农田径流水及土壤有效氮磷的富集效应和测算杂草生物量及植株氮磷比值等，进行杂草去除氮、磷效果测算及物种去除氮、磷效果量化，以期为滇池水体富营养化的综合治理提供依据.结果表明：①同一物种或不同物种在不同时期，各杂草种间氮磷富集差异较大；②近自然杂草植株体对氮磷的富集主要表现为氮限制类型（N〖DK〗∶P14）；③农田生态沟渠近自然杂草生物量与氮磷养分吸收呈正相关关系，全年流域氮、磷富集总量为（37.869.9） kg/hm2和（4.271.19） kg/hm2，远远小于滇池流域氮最大流失量113.16 kg/hm2和磷最大流失量10.14 kg/hm2.
- 滇池流域 /
- 近自然杂草 /
- 生态沟渠 /
- 氮磷富集
Abstract: This paper quantified the weed and species removal effect of NP respectively, and definite the yearly absorption and removal effect of NP in farmland soil and runoff by weed in the natural approximating ecological agro-ditches in Dianchi Lake basin, to provide the evidence of water eutrophication comprehensive treatment in agro-diffused pollution by cutting NP effectively and source control. The result proved: ① There is a great difference of NP enrichment among different weeds, in the same or different species of different periods; ② the main phenomenon of NP enrichment of natural approximating weed plant is N limitation (N〖DK〗∶P14); ③ there is positive relationship between NP nutrient absorption and the weed biomass in natural approximating ecological agro-ditch of farmland, and the whole year total amount of NP in the basin were N (37.869.9) kg/hm2, P (271.19) kg/ha, which were much lower than the maximum of N 113.16 kg/ha, P 10.14 kg/hm2.
- Dianchi Lake basin /
- near nature weeds /
- eco-ditch system /
- N,P enrichment

HTML全文

参考文献(1)

[1]

［1］金相灿，屠清瑛. 湖泊营养化调查规范［M］.北京:中国环境科学出版社，1992.

［2］郭红岩,王晓蓉,朱建国.太湖一级保护区非点源磷污染的定量化研究［J］.应用生态学报，2004,15(1):136-140.

［3］高超，张桃林，吴蔚东.农田土壤中的磷向水体释放的风险评价［J］.环境科学学报,2001(3): 344-348.

［4］ CARPENTER S R,CARACO N,CORRELL D L,et al.Nonpoint pollution of surface waters with phosphorus and nitrogen［J］. Ecol Appl, 1998(8): 559-568.

［5］ SHARPLEY A N. Identifying sites vulnerable to phosphorus loss in agriculture runoff ［J］.Environ Qual, 1995, 24: 947-951.

［6］ FOY R H, WHITHERS P J A.The contribution of agricultural phosphors to eutrophication［C］. Peterborough, UK: Fertilizer Society, 1995: 211-223.

［7］ HE Y, HAMZA A B, KRIM H. A generalized divergence measure forrobust image registration［J］. Ieee Transactions on Signal Processing, 2003, 51(5): 1211-1220.

［8］ BYRNE G F, CRAPPER P F, MAYO K. K. Monitoring Land cover by principal component analysis of multitemporal landsat data［J］. Remote Sensing of Environment, 1980(10): 175-184.

［9］夏立忠，杨林章.太湖流域非点源污染研究与控制［J］.长江流域资源与环境，2003,12(1): 45-49.

［10］黄满湘，章申，唐以剑，等．模拟降雨条件下农田径流中氮的流失过程［J］.土壤与环境 2001, 10(1): 6-10．

［11］吴忠红，张乃明,邓玉龙.北方日光温室土壤有机质积累特征研究［J］.中国农学通报, 2005, 21(10):226-228.

［12］曾从盛, 张林海, 仝川. 闽江河口湿地芦苇和互花米草氮、磷养分季节动态［J］.湿地科学，2009，7(1)：16-24.

［13］ GUSEWELL S, KOERSELMAN W, VERHOEVEN J T A.Biomass N-P ratios as indicators of nutrient limitation for plant populations in wetlands［J］. Ecological Applications, 2003, 13: 372-384.

［14］ TESSIER J T, RAYNAL D J.Use of nitrogen to phosphorus ratios in plant tissue as an indicator of nutrient limitation and nitrogen saturation［J］. Journal of Applied Ecology, 2003, 40: 523-534.

［15］王绍强,于贵瑞.生态系统碳氮磷元素的生态化学计量学特征［J］.生态学报，2008,28(8):3937-3947.

［16］ MORETTOA S, DISTELR A. Decomposition of and nutrient dynamics in leaf litter and roots of Poa ligularis and Stipa gyneriodes ［J］. Journal of Arid Environments, 2003, 55(3): 503-514.

［17］段晓男，王效科，欧阳志云.乌梁素海野生芦苇群落生物量及影响因子分析［J］.植物生态学报,2004,28(2): 246-251.

［18］ GSEWELL S.High nitrogen:phosphorus ratios reduce nutrient retention and second-year growth of wetland sedges［J］. New Phytologist, 2005, 166: 537-550.

［19］ GSEWELL S. N〖DK〗∶P ratios in terrestrial plants:variation and functional significance ［J］. New Phytologist, 2004, 164(2): 243-266.

［20］ DRENOVSKY R E, RICHARDS J H. Critical N〖DK〗∶P values:predicting nutrient deficiencies in desert shrublands［J］. Plant and Soil, 2004, 1259: 59-69.

［20］郭长城，王国祥，喻国华.利用水生植物净化水体中的悬浮泥沙［J］.环境工程, 2006,24(6):31-33.

［21］张智，王利利，曾晓岚，等.泥沙沉降对长江水体富营养化相关因素的影响初探［J］.生态环境，2006,15(3):457-460.

［22］ TANNER C C.Growth and nutrient dynamics of soft-stem bulrush in constructed wetlands treating nutrient-rich wastewaters ［J］. Wetlands Ecology and Management, 2001, 9(1): 49-73.

［23］ WANG P F, WANG C. Nutrients removing by arrowheads in different growing periods in the transition zone between lands and rivers ［J］. Water Resources, 2007, 34(4): 471-477.

施引文献

资源附件(0)

访问统计