深圳福田自然保护区红树林土壤的化学特征

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Abstract

The results from the investigations on the mangrove soils in the Futian Nature Reserve, Shenzhen show that the chemical characteristics of the soils vary widely along the transect approximately parallel to the coastline, while the variations in soil chemical parameters along the transect approximately perpendicular to the coastline are relatively insignificant. As a result of contamination by wastewaters discharging into the mangrove wetland from the surrounding urbanized areas, the bio-available concentrations of many heavy metals are much higher, compared to those in the mangrove soils occurring in the front part of the Pearl River Delta. Concentrations of total and available P were higher in the soils affected by wastewater than those not directly affected by wastewater. It appears that the accumulation of pyrite in the mangrove soils in Futian is not related the abundance of organic matter, indicating that organic matter has not been a limiting factor for pyrite accumulation in this site. Inorganic reduced S is somewhat related to EC and the HCl-extractable Fe, suggesting that increases in soluble sulfate and reactive iron may favor the accumulation of pyrite in the soils. However, because the correlation coefficients are not sufficiently great(R²<0.2), the controls of soluble sulfate and reactive iron on pyrite accumulation may be limited.

Key words： Mangrove soils Heavy metals Inorganic reduced S

Received: 25 April 2004

PACS:

S153

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	Articles by authors
	LIN Chu-xia
	CHU Cheng-xing
	LU Wen-zhou
	LONG Jie
	LIU Yong
	XU Songjun

Cite this article:

LIN Chu-xia,CHU Cheng-xing,LU Wen-zhou, et al. Chemical characteristics of mangrove soils in the Futian Nature Reserve, Shenzhen[J]. , 2004, 23(2): 118-123.

URL:

http://journal15.magtechjournal.com/Jwk_stkx/EN/ OR http://journal15.magtechjournal.com/Jwk_stkx/EN/Y2004/V23/I2/118

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