深圳福田白骨壤红树林Cu,Pb,Zn,Cd的累积及分布   总被引：17，自引：0，他引：17  

郑文教  林鹏 《海洋与湖沼》1996,27(4):386-393

于1994年3月，采用样方法分析、探讨深圳福田自然保护区车公庙林区白骨壤红树林重金属Cu，Ph，Zn，Cd元素的累积及分布。结果表明：该林地表层土壤（0—3cm深），Cu，Ph，Zn，Cd的含量分别为383．28．7，1140，0136×10－6，储量分别为5285.40，3960.60,15732.00,18.77mg／m2、植物体各部位Cu，Pb,Zn，Cd含量范围分别为1.81-13.8，0.402－3．51，3．42－69.5，0.013－0295×10-6对表层土壤加权平均富集系数为Cd＞Zn＞Cu＞Pb.该群落Cu，Pb，Zn，Cd现存累积量分别为53．70,19．27，187.89,0.72mg／m2；年净存留累积量分别为4063.91，1318.14，16358.62，60．21μg／m2；林地残留物相应元素的储量分别为2091.18，1958.66,5046.60,19.30μg／m2。该林区不同群落叶层Cu，Pb,Zn，Cd现存累积量为白骨壤林＞桐花树林＞秋茄林。  相似文献   

香港米埔自然保护区保护与管理经验及启示     

何诗雨  胡涛  徐华林  史秀华 《湿地科学与管理》2016,(1):26-29

随着深圳市城市发展步伐的不断加快,福田红树林自然保护区受到水体污染、人为干扰、病虫害及外来物种等各方面影响,导致其生态系统出现不同程度的退化。通过赴香港米埔自然保护区考察与学习,分析了香港米埔自然保护区精细化管理、生态系统日趋稳定及教育宣传等经验,提出了深圳福田乃至全国红树林自然保护区保护与管理对策和建议。  相似文献   

Litter dynamics and forest structure of the introduced Sonneratia caseolaris mangrove forest in Shenzhen, China     

Luzhen Chen  Qijie Zan  Mingguang Li  Jinyu Shen  Wenbo Liao 《Estuarine, Coastal and Shelf Science》2009,85(2):241-246

For the purpose of mangrove restoration in China, Sonneratia caseolaris has been introduced and planted in Guangdong Province outside and north of its native habitat, Hainan Province. We monitored the litter fall and forest structure of this S. caseolaris forest in Shenzhen City, Guangdong Province, China, from 1996 to 2005. The annual fluctuation in litter fall increased with increases in air temperature from spring to early summer, and reached a maximum in autumn when the fruits matured. The total litter fall was significantly affected by air temperature, day length, and evaporation, rainfall in the previous month and by typhoons. In 1998, the sixth year after cultivation, the total litter production of the mature S. caseolaris forest significantly increased. The mean annual total litter production during 1998–2005 was 15.1 t ha⁻¹ yr⁻¹, among which, leaves and reproductive materials contributed more than 80% of the total. During the ten years of study, the DBH (diameter at 1.30 m from ground level) and tree height of S. caseolaris increased from 5.2 cm to 18.3 cm, and from 4.5 m to 13.4 m, respectively. The litter fall production was strongly correlated with forest structure parameters, such as DBH, tree height, and crown area. The R value (the ratio of the maximum total litter fall to the minimum in the same community during the investigation periods) of S. caseolaris in the present study was 1.98, indicating a low annual variation of litter fall during these ten years.  相似文献   

Contamination of polycyclic aromatic hydrocarbons (PAHs) in surface sediments and plants of mangrove swamps in Shenzhen,China     

Fenglan Li  Xiaokang Zeng  Junda Yang  Kai Zhou  Qijie Zan  Anping Lei  Nora F.Y. Tam 《Marine pollution bulletin》2014

The concentrations of 16 individual and total polycyclic aromatic hydrocarbons (∑PAHs) in sediments, roots and leaves of three mangrove swamps in Shenzhen, China, namely Futian, Baguang and Waterlands, were determined. The mean concentration of ∑PAHs in Futian (4480 ng g⁻¹) was significantly higher than that in Baguang (1262 ng g⁻¹) and Waterlands (2711 ng g⁻¹). Among the 16 PAHs, the concentration of naphthalene was the highest. Based on the ratios of phenanthrene/anthracene and fluoranthene/pyrene, PAHs in Futian and Waterlands came from petrogenic and pyrolytic sources, while Baguang was mainly from pyrolytic. More PAHs were accumulated in leaves, as reflected by its higher mean concentration of ∑PAHs (3697 ng g⁻¹) and bioconcentration factor of PAHs (BCF) (>1.5) than that in roots. The BCF values in plants collected from Futian were significantly higher than that from Waterlands. These results indicated that more attention should be paid to the PAH contamination in Futian.  相似文献