《中非地下水资源可持续利用(英文版)》主要内容简介："In the sustainable utilization of groundwater resources（English version）"（authorMa Teng、Zhai Mingzhe、Oteng Lekgowe、Tan Ting）included:"Hydrogeology and Groundwater Management in Botswana"、"Groundwater Resources Distribution and Vulnerability in Botswana"、"Improving Water Availability through Watershed Management in Africa"And other essays.
"In the sustainable utilization of groundwater resources（English version）"（authorMa Teng、Zhai Mingzhe、Oteng Lekgowe、Tan Ting）included："Hydrogeology and Groundwater Management in Botswana"、"Groundwater Resources Distribution and Vulnerability in Botswana"、"Improving Water Availability through Watershed Management in Africa"And other essays.
1. Hydrogeology and Groundwater Management in Botswana
2. Groundwater Resources Distribution and Vulnerability in Botswana
3. Economic Gains at the Expense of Health and the Environment? The Effects of Artisanal Diamond Mining on Groundwater Quality in Koidu， Sierra Leone， and the Need for Protection
4. Improving Water Availability through Watershed Management in Africa
5. Rainwater Harvesting and Artificial Recharge in Africa
6. The Application of a New Stable Isotope Tracer（81Br）in Groundwater Research
7. Modified Diatomite as Adsorbent for Removal of Heptachlor from Water
8. Geological Filtration Technology Applied to Remove Arsenic from Groundwater of Hangjinhouqi Area， China
9. Heavy Metals in Shallow Groundwater from Some Sites in Daye City of China
10. Spatial Distribution Characteristics of Heavy Metal Elements in Unsaturated Zone of Xiaodian Sewage Irrigation Area in Taiyuan
11. Experimental Study on Quantitative Assessment of Cr（VI） Reducibility Using δ53Cr
12. Study on Arsenic in Groundwater under the Influence of Irrigated Agriculture In Hetao Plain， Inner Mongolia
POSTSCRIPT
In order to know vertical distribution of heavy metal elements in unsaturated zone after long-term irrigation and the lateral leakage of wastewater irrigation on the heavy metal elements accumulation in unsaturated zone,we used Luoyang shovel to get soil samples.According to the trend of the sewage channels,we chose places perpendicular to the irrigation channels and took the soil samples in the irrigation channels and in the farms which distance the channels 3m,7m,18m.In addition,we chose an old dilapidated house in Liujian village which has never been irrigated by sewage as a background.The house is about 100m away from the Beizhang waste canal.It is influenced less by the lateral infiltration of waste canal,so this place can reflect the soil composition without sewage irriga-tion.From the surface to 2m down,we took a soil sample every 0.3m,and each of them was not less than 2kg,then mixed and used quartering method to take 0.Skg.At last,33 soil samples were collected（Fig.1）.
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