N pollution sources and denitrification in waterbodies in Taihu Lake region

2001 ◽  
Vol 44 (3) ◽  
pp. 304-314 ◽  
Author(s):  
Guangxi Xing ◽  
Yacheng Cao ◽  
Shulian Shi ◽  
Guoqing Sun ◽  
Lijuan Du ◽  
...  
Keyword(s):  
Taihu Lake ◽  
Pollution Sources ◽  
Lake Region ◽  
N Pollution

scholarly journals Life-cycle evaluation of nitrogen-use in rice-farming systems: implications for economically-optimal nitrogen rates

2011 ◽  
Vol 8 (11) ◽  
pp. 3159-3168 ◽  
Author(s):  
Y. Xia ◽  
X. Yan
Keyword(s):  
Life Cycle ◽  
Environmental Impact ◽  
Taihu Lake ◽  
Oryza Sativa L ◽  
Growing Season ◽  
Economic Effects ◽  
N Fertilizer ◽  
Environmental Cost ◽  
N Losses ◽  
Lake Region

Abstract. Nitrogen (N) fertilizer plays an important role in agricultural systems in terms of food yield. However, N application rates (NARs) are often overestimated over the rice (Oryza sativa L.) growing season in the Taihu Lake region of China. This is largely because negative externalities are not entirely included when evaluating economically-optimal nitrogen rate (EONR), such as only individual N losses are taken into account, or the inventory flows of reactive N have been limited solely to the farming process when evaluating environmental and economic effects of N fertilizer. This study integrates important material and energy flows resulting from N use into a rice agricultural inventory that constitutes the hub of the life-cycle assessment (LCA) method. An economic evaluation is used to determine an environmental and economic NAR for the Taihu Lake region. The analysis reveals that production and exploitation processes consume the largest proportion of resources, accounting for 77.2 % and 22.3 % of total resources, respectively. Regarding environmental impact, global warming creates the highest cost with contributions stemming mostly from fertilizer production and farming processes. Farming process incurs the biggest environmental impact of the three environmental impact categories considered, whereas transportation has a much smaller effect. When taking account of resource consumption and environmental cost, the marginal benefit of 1 kg rice would decrease from 2.4 to only 1.05 yuan. Accordingly, our current EONR has been evaluated at 187 kg N ha−1 for a single rice-growing season. This could enhance profitability, as well as reduce the N losses associated with rice growing.

Effects of agricultural production on phosphorus losses from paddy soils: a case study in the Taihu Lake Region of China

2005 ◽  
Vol 13 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Huanchao Zhang ◽  
Fuliang Cao ◽  
Shengzuo Fang ◽  
Gaiping Wang ◽  
Hongai Zhang ◽  
...  
Keyword(s):  
Agricultural Production ◽  
Taihu Lake ◽  
Paddy Soils ◽  
Lake Region ◽  
Phosphorus Losses

Some Physical Properties of Paddy Profiles in Taihu Lake Region

1981 ◽  
pp. 311-315 ◽  
Author(s):  
Yu De-fen ◽  
Yao Xian-liang
Keyword(s):  
Physical Properties ◽  
Taihu Lake ◽  
Lake Region

Dry deposition of N has a major impact on surface water quality in the Taihu Lake region in southeast China

2018 ◽  
Vol 190 ◽  
pp. 1-9 ◽  
Author(s):  
Chaopu Ti ◽  
Bo Gao ◽  
Yongxia Luo ◽  
Shuwei Wang ◽  
Scott X. Chang ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Dry Deposition ◽  
Taihu Lake ◽  
Surface Water Quality ◽  
Southeast China ◽  
Lake Region

Nitrogen budget and surface water nitrogen load in Changshu: a case study in the Taihu Lake region of China

2011 ◽  
Vol 91 (1) ◽  
pp. 55-66 ◽  
Author(s):  
Chaopu Ti ◽  
Yongqiu Xia ◽  
Jianjun Pan ◽  
Genmao Gu ◽  
Xiaoyuan Yan
Keyword(s):  
Surface Water ◽  
Taihu Lake ◽  
Nitrogen Budget ◽  
Lake Region

Ecologically optimal nitrogen application rates for rice cropping in the Taihu Lake region of China

2011 ◽  
Vol 7 (1) ◽  
pp. 33-44 ◽  
Author(s):  
Yongqiu Xia ◽  
Xiaoyuan Yan
Keyword(s):  
Taihu Lake ◽  
Nitrogen Application ◽  
Lake Region ◽  
Application Rates

Discovery of Elite Alleles for Seed Vigor Traits in Two Populations of Japonica Rice in Taihu Lake Region

2010 ◽  
Vol 36 (5) ◽  
pp. 754-763 ◽  
Author(s):  
Yang WANG ◽  
Yuan GUO ◽  
De-Lin HONG
Keyword(s):  
Taihu Lake ◽  
Seed Vigor ◽  
Japonica Rice ◽  
Lake Region ◽  
Two Populations

Organo-chlorine pesticide (DDT and HCH) residues in the Taihu Lake Region and its movement in soil–water system

Chemosphere ◽  
2003 ◽  
Vol 50 (6) ◽  
pp. 683-687 ◽  
Author(s):  
K. Feng ◽  
B.Y. Yu ◽  
D.M. Ge ◽  
M.H. Wong ◽  
X.C. Wang ◽  
...  
Keyword(s):  
Soil Water ◽  
Taihu Lake ◽  
Water System ◽  
Lake Region
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