Stress Tolerance of Poplar Ⅰ-72 Plantation for Domestic Wastewater

BAI Bao-xun; FAN Wei; BIAN Xin-min; YANG Hai-qing

A field experiment was conducted in order to quantify the effect of domestic wastewater on the growth of poplar plantation and research the purification function of poplar trees for wastewater in Longhu Town of Zhengzhou during 2008 and 2009. Different hydraulic loading (0, 3, 6, 9, 12, 15 cm·week-1) were applied to the experimental plots. A series of indicators (growth of poplar plantation, leaf litter dry weight, one-year-old branch, leaf length, leaf fluctuating asymmetry; nitrogen, phosphorus and sodium contents of branch and leaf) were measured. The results showed that wastewater land treatment resulted in increasing the growth of poplar plantation and nitrogen, phosphorus, sodium contents of branch and leaf. Poplars can take up pollutants in wastewater. However, the chemicals in domestic wastewater caused poplar trees damage due to high NaCl. Leaf length appeared to be a useful stress diagnostic tool for use in situ.

1. College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China

2. Forestry Ecological Engineering Research Center, Henan Academy of Forestry, Zhengzhou 450008, Henan, China)

Abstract: A field experiment was conducted in order to quantify the effect of domestic wastewater on the growth of poplar plantation and research the purification function of poplar trees for wastewater in Longhu Town of Zhengzhou during 2008 and 2009. Different hydraulic loading (0, 3, 6, 9, 12, 15 cm·week-1) were applied to the experimental plots. A series of indicators (growth of poplar plantation, leaf litter dry weight, one-year-old branch, leaf length, leaf fluctuating asymmetry; nitrogen, phosphorus and sodium contents of branch and leaf) were measured. The results showed that wastewater land treatment resulted in increasing the growth of poplar plantation and nitrogen, phosphorus, sodium contents of branch and leaf. Poplars can take up pollutants in wastewater. However, the chemicals in domestic wastewater caused poplar trees damage due to high NaCl. Leaf length appeared to be a useful stress diagnostic tool for use in situ.

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Reference (15)

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Stress Tolerance of Poplar Ⅰ-72 Plantation for Domestic Wastewater

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