MALAYSIAN TECHNICAL COOPERATION PROGRAMME(MTCP)

COUNTRY REPORT

CHINA

PAN XIAO LING

The Survey to Fisheries Ecological Environment in Mass Freshwaters

of Fujian Province during 2002 and 2003

Pan Xiao Ling

(The Fresh water Fisheries Research Institute of Fujian Province, Fuzhou 350002,

China)

1 Inspection items and methods

1.1 Dates and times of inspection

1.2 Waters inspected and stations located

Waters inspected are: Shuikou reservoir in

Mingqing district, Mianhua Tan reservoir of

Yongding county, Dajin lake of Taining county,

Shaxikou area, Shaowufutun Brook, Longyan

area of Jiulong river.

1.3 Inspection items

1.3.1 Water quality inspection items ：Water temperature, transparency, pH, dissolve oxygen,

permanganate index, total phosphorus, nitrite nitrogen,

nitrate nitrogen, ammoniacal nitrogen, mercury,

copper, cadmium, lead, arsenic, petroleum, suspended

substance, total bacteria count, total large intestines

colony.

1.3.2 Sediment inspection items ： Sulphide, organic contaminant.

1.3.3 Organism quality inspection items:

Lead, copper, cadmium, arsenic, mercury,

DDT ， PCBs.

1.4 Inspection methods

《 Water and waste inspection analysis methods 》 .

1.5 Evaluation standard

《 Standards for fisheries water quality 》 （ GB11607-1989 ）

《 Standards for environment quality of surface water 》 （ GHZB1-1999） section Ⅲ relevant international and domestic standard A16, which are

about bottom material pollutant .

《 The limitation about harmful and poisonous materials

contained in free polluted foods ---water products 》 (NY5073-2001) .

2 Results and discussion

2.1 Water quality inspection

Inspection results refer to table 1, table 2 and ta

ble 3.

Table 1 The results of water quality inspection of fisheries environment

during 2002-2003 （ Unit ： all are mg/L except pH and which marks ） waters

Items

Shuikou

Minqing

district

Yongding

Mianhuatan

reservoir

Taining

Dajin lake Shaxikou area

Shaowu

Futun brook

Longyan area

of Jiulong river

T(℃) 21.0~26.0 22.5~27.0 21.0~25.0 21.0~26.0 21.0~23.0 19.5~26.0

Transparency (m) 0.25~3.40 2.00~4.25 0.60~2.50 0.90~1.30 0.40~2.50 0.50~0.90

pH 6.80~7.07 7.11~8.67 6.65~8.15 6.14~7.13 6.30~7.12 6.95~7.68

Do 2.32~12.15 6.98~10.56 4.12~12.26 4.70~9.52 6.02~7.66 8.02~10.80

CODMn 2.49~3.97 2.63~4.20 1.70~3.95 3.01~4.20 3.12~3.76 3.67~8.16

TP 0.018~0.051 0.002~0.006 0.002~0.016 0.008~0.060 0.004~0.035 0.220~0.699

NO2-—N 0.002~0.050 None~0.012 0.001~0.033 0.044~0.764 0.004~0.052 0.066~0.630

NO3-—N 0.12~0.89 0.15~1.52 0.10~0.67 0.27~0.74 0.24~1.22 0.20~0.83

(NH4++ NH3)--N none~1.060 none~0.128 none~0.899 0.405~1.404 0.072~0.353 none~82.6

NH3 0.000~0.007 0.000~0.011 0.000~0.004 0.0003~0.008 0.0003~0.0008 0.000~2.36

Hg ﹤0.0005 ﹤0.0005 ﹤0.0005 ﹤0.0005 ﹤0.0005 ﹤0.0005

Cu ﹤0.01 ﹤0.01 ﹤0.01 ﹤0.01 ﹤0.01 ≤ 0.01

Cd ﹤0.001 ﹤0.001 ﹤0.001 ﹤0.001 ﹤0.001 ≤ 0.001

Pb ﹤0.01 ﹤0.01~0.02 ﹤0.01 ﹤0.01~0.03 ≤ 0.01 ﹤0.01~0.05

As ﹤0.005~0.11 ﹤0.005~0.13 ﹤0.005~0.08 ﹤0.005~0.08 ﹤0.005~0.08 ﹤0.005~0.11

petroleum 0.01~0.039 0.01~0.088 0.004~0.03 0.02~0.04 0.02~0.05 0.02~0.086

Suspended

substance 0.4~5.4 0.2~10.0 0.4~6.0 2.0~5.4 0.3~3.7 5.0~20.0

Total bacteria

count (CFU/L)

4.78× 103~

1.44× 106

5.00× 102~

3.53× 105

3.50× 103~

8.50× 107

5.70× 104~

6.90× 106

1.55× 105~

4.05× 106

1.50× 103~

3.33× 107

Total l arge

i ntesti nes

col ony (个/L)

7~440 0~150 7~630 80~950 130~230 9~1500

Table 2 Items of average value and evaluation standard of water quality inspection

（ Unit ： mg/L ）（ Note ： values with “*” in table indicate that they went beyond

standard, the same meaning in following tables ） waters

Items

Shuikou

Minqing

district

Yongding

Mianhuatan

reservoir

Taining

Dajin lake

Shaxikou

area

Shaowu

Futun brook

Longyan

area of

Jiulong river

Standard

values

T(℃) 23.6 25.0 22.7 24.1 22.0 22.8

Transparency (m) 1.99 2.97 1.29 1.01 1.40 0.64

pH 6.94 7.64 7.32 6.82 6.71 7.23 6.5~8.5

Do 6.74 8.77 10.18 7.05 6.84 9.41 ≥ 3

CODMn 3.20 3.37 2.92 3.44 3.36 4.77 ≤ 8

TP 0.032 0.004 0.010 0.032 0.020 *0.330 ≤ 0.1

NO2-—N 0.011 0.005 0.015 *0.175 0.020 *0.479 ≤ 0.15

NO3-—N 0.48 0.36 0.30 0.50 0.66 0.58 ≤ 20

(NH4++ NH3)--N 0.145 0.017 0.172 0.860 0.221 12.89

NH3 0.001 0.001 0.001 0.004 0.0005 *0.313 ≤ 0.02

Hg ﹤0.0005 ﹤0.0005 ﹤0.0005 ﹤0.0005 ﹤0.0005 ﹤0.0005 ≤ 0.0005

Cu ﹤0.01 ﹤0.01 ﹤0.01 ﹤0.01 ﹤0.01 ﹤0.01 ≤ 0.01

Cd ﹤0.001 ﹤0.001 ﹤0.001 ﹤0.001 ﹤0.001 ﹤0.001 ≤ 0.005

Pb ﹤0.01 ﹤0.011 ﹤0.01 ﹤0.014 ﹤0.01 ﹤0.02 ≤ 0.05

As ﹤0.027 *﹤0.051 ﹤0.033 ﹤0.031 ﹤0.042 ﹤0.044 ≤ 0.05

petroleum 0.019 0.033 0.02 0.027 0.029 *0.056 ≤ 0.05

Suspended

substance 2.2 2.9 2.3 3.4 2.2 *11.2 ≤ 10

Total bacteria

count(CFU/L) 3.25× 105 1.38× 105 8.91× 106 1.34× 106 1.65× 106 5.68× 106

Total l arge

i ntesti nes

col ony (个/L)

155 79 263 248 190 575 ≤ 5000

Table 3 The ratio of excess standard of items (During 2002 and 2003)（ Unit ： % ）

Shuikou

Minqing

district

Yongding

Mianhuatan

reservoir

Taining

Dajin lake Shaxikou area

Shaowu

Futun brook

Longyan area

of Jiulong river waters

Items

2002 2003 2002 2003 2002 2003 2002 2003 2002 2003 2002 2003

pH 0 0 0 16.7 0 0 0 25.0 25.0 0 0

Do 0 12.5 0 0 0 0 0 0 0 0 0

CODMn 0 0 0 0 0 0 0 0 0 25.0 0

TP 0 0 0 0 0 0 0 0 0 100 100

NO2-—N 0 0 0 0 0 0 0 25.0 0 75.0 75.0

NO3-—N 0 0 0 0 0 0 0 0 0 0 0

NH3 0 0 0 0 0 0 0 0 0 25.0 50.0

Hg 0 0 0 0 0 0 0 0 0 0 0

Cu 0 0 0 0 0 0 0 0 0 0 0

Cd 0 0 0 0 0 0 0 0 0 0 0

Pb 0 0 0 0 0 0 0 0 0 0 0

As 0 25.0 50.0 50.0 0 50.0 0 50.0 50.0 50.0 50.0

petroleum 0 0 16.7 16.7 0 0 0 0 0 50.0 75.0

Suspended

substance 0 0 0 0 0 0 0 0 0 50.0 50.0

Total l arge i ntesti nes

col ony (个/L)

0 0 0 0 0 0 0 0 0 0 0

2.2 Sediment inspection

The inspection results in table4 .

Table 4 Sediment inspection results, evaluation standard and

the ratio of excess standard

Waters Items

Shuikou

Minqing

district

Yongding

Mianhuatan

reservoir

Taining

Dajin lake

Shaxikou

area

Shaowu

Futun

brook

Longyan

area of

Jiulong

river

Standard

values

ratio of

excess

standard (%)

Sulphid

(S2 -mg/kg) 11.8 6.8 18.2 38.1 17.3 27.4 ≤ 300 0

Organic

contaminant(%) *4.75 2.54 *3.76 *4.26 *6.90 2.80 ≤ 3.4 66.7

2.3 Organism quality inspection

Results showed in table 5. Table 5 Organism quality inspection results, evaluation standard, ratio

of excess standard （ Unit ： mg/kg ） Items

Place Kind

Pb Cu Cd As Hg DDT PCBS

Snail *0.66 *60 0.17 0.70 0.060 <0.01 <0.01 Minqing Freshwater

mussel 0.42 2.4 0.31 0.73 0.007 <0.01 <0.01

Snail *0.78 39 0.09 0.37 0.013 <0.01 <0.01

蚬子 *0.55 8.4 0.49 0.009 Sha

county

Small Clam *0.85 3.2 *0.61 0.28 0.006 <0.01 <0.01

Snail *0.9 25 0.19 0.26 0.084 <0.01 <0.01 Shaowu

蚬子 0.2 5.4 0.33 0.84 0.054 <0.01 <0.01

Snail 0.40 19.5 0.06 0.12 0.041 <0.01 <0.01 Taining

Big Clam *0.57 1.9 0.17 0.006

Snail *0.57 12.8 0.05 <0.1 0.008 0.016 <0.01 Longyan

蚬子 0.3 7.5 *0.84 *1.1 0.017 <0.01 <0.01

Standard value ≤ 0.5 ≤ 50 ≤ 0.5 ≤ 1.0 ≤ 1.0 ≤ 1 ≤ 0.2

ratio of excess

standard(%) 63.6 9.1 18.2 11.1 0 0 0