Sustainable Agriculture and Food: Four volume set (Earthscan Reference Collections)

Integrated Farming Systems at Different Scales 437

infrastructure were implemented. As per this plan, 524 dwelling houses were
built with per capita living space of 72m^2. Investment was provided to expand
teaching facilities and improve living conditions of the village’s teachers. The
total area of buildings for middle schools was expanded by 1500m^2 , a primary
school was set up with an area of 300m^2. The highways in GSES were expanded
by 5000m.
7 Promoting capacity building. A series of eco-educational activities were con-
ducted through broadcasting, a blackboard newspaper and meetings. In addi-
tion, the authorities of the villages organized a series of training courses to
disseminate useful techniques and knowledge to improve working skills of the
farmers.

Table 18.9 Status of waste water from heavy-pollution enterprises

Year

pH

Indicator pollutants (mg/l)

CN– Cr6+ Cu2+ Zn2+ Ni2+

1988 3.50 0.50 21.90 0.78 1.69 10.65

1991 6.94 0.38 0.23 0.23 0.30 0.81

Table 18.10 Improvement in water quality through specific pollution treatments from

1988 to 1991

Sampling place Concentration of pollutants (mg/l)

Year COD Cr6+ NH 3 -N Volatile phenol Hg Cu2+

Shando Bay 1988 4.59 0.023 0.20 0.002 0.05 0.007

1991 2.07 0.004 0.20 0.002 0.05 0.007

Jiangjunyan 1988 3.20 0.004 0.66 0.002 0.05 0.007

1991 2.74 0.004 0.91 0.002 0.05 0.007

Lanjiangkou 1988 3.32 0.004 0.71 0.002 0.05 0.007

1991 2.46 0.004 0.45 0.002 0.05 0.007

Table 18.11 Improvement in soil quality from 1988 to 1991

Year Concentration of pollutants (ppm)

Total Cr Cd Zn Cu Ni Fe Pb Mn BHC DDT

1988 10.61 0.18 73.46 14.16 12.85 31,158.5 29.48 434.09 0.06 0.21

1991 4.50 0.11 61.13 13.64 10.01 34,257.7 14.00 335.38 0.04 0.19

Increase

relative

to 1998

–57.59 (%) –37.93 –16.73 –3.60 –22.10 995 –18.46 –22.74 –39.57 –11.35