Effects of Wetland Reclamation on Soil Nutrient Losses and Reserves in Sanjiang Plain, Northeast China
The carbon (C), nitrogen (N) and phosphorus (P) variations of a temperate wetland soil under continuous cultivation for 40 yr were determined and evaluated in the Sanjiang Plain, Northeast China. The results showed that the soil organic carbon (SOC) and total nitrogen (TN) contents in each soil laye...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2012-03-01
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| Series: | Journal of Integrative Agriculture |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311912600379 |
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| author | Yang WANG Jing-shuang LIU Jin-da WANG Chong-yu SUN |
| author_facet | Yang WANG Jing-shuang LIU Jin-da WANG Chong-yu SUN |
| author_sort | Yang WANG |
| collection | DOAJ |
| description | The carbon (C), nitrogen (N) and phosphorus (P) variations of a temperate wetland soil under continuous cultivation for 40 yr were determined and evaluated in the Sanjiang Plain, Northeast China. The results showed that the soil organic carbon (SOC) and total nitrogen (TN) contents in each soil layer decreased sharply after cultivation for 2-3 yr, and exhibited minor differences after cultivation for 11 yr, which showed an exponential decline curve with the increase of cultivation years. The reduction rates of carbon and nitrogen reserves were 14.79% and 28.53% yr−1 at the initial reclamation stages of 2-3 yr and then decreased to 2.02-3.08% yr−1 and 1.98-2.93% yr−1 after cultivation for 20 yr, respectively. Soil total phosphorus (TP) reserves decreased within cultivation for 5 yr, and then gradually restored to the initial level after cultivation for 17 yr. Both SOC and TN could be restored slightly when the farmland was left fallow for 8 yr after reclamation for 11 yr, whereas TP had no significant difference. These results demonstrated that wetland cultivation was one of the most important factors influencing on the nutrient fate and reserves in soil, which could lead to the rapid nutrient release and slow restoration through abandon cultivation, therefore protective cultivation techniques preventing nutrients from loss should be immediately established after wetland reclamation. |
| format | Article |
| id | doaj-art-9fdf43f582f74c5abbeec8d03b4123af |
| institution | Kabale University |
| issn | 2095-3119 |
| language | English |
| publishDate | 2012-03-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj-art-9fdf43f582f74c5abbeec8d03b4123af2025-08-20T03:57:03ZengKeAi Communications Co., Ltd.Journal of Integrative Agriculture2095-31192012-03-0111351252010.1016/S2095-3119(12)60037-9Effects of Wetland Reclamation on Soil Nutrient Losses and Reserves in Sanjiang Plain, Northeast ChinaYang WANG0Jing-shuang LIU1Jin-da WANG2Chong-yu SUN3Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, P.R. ChinaCorrespondence LIU Jing-shuang, Tel: +86-431-85542232, Fax: +86-431-85542298; Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, P.R. ChinaKey Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, P.R. ChinaKey Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, P.R. ChinaThe carbon (C), nitrogen (N) and phosphorus (P) variations of a temperate wetland soil under continuous cultivation for 40 yr were determined and evaluated in the Sanjiang Plain, Northeast China. The results showed that the soil organic carbon (SOC) and total nitrogen (TN) contents in each soil layer decreased sharply after cultivation for 2-3 yr, and exhibited minor differences after cultivation for 11 yr, which showed an exponential decline curve with the increase of cultivation years. The reduction rates of carbon and nitrogen reserves were 14.79% and 28.53% yr−1 at the initial reclamation stages of 2-3 yr and then decreased to 2.02-3.08% yr−1 and 1.98-2.93% yr−1 after cultivation for 20 yr, respectively. Soil total phosphorus (TP) reserves decreased within cultivation for 5 yr, and then gradually restored to the initial level after cultivation for 17 yr. Both SOC and TN could be restored slightly when the farmland was left fallow for 8 yr after reclamation for 11 yr, whereas TP had no significant difference. These results demonstrated that wetland cultivation was one of the most important factors influencing on the nutrient fate and reserves in soil, which could lead to the rapid nutrient release and slow restoration through abandon cultivation, therefore protective cultivation techniques preventing nutrients from loss should be immediately established after wetland reclamation.http://www.sciencedirect.com/science/article/pii/S2095311912600379wetland reclamationSanjiang Plainorganic carbontotal nitrogentotal phosphorus |
| spellingShingle | Yang WANG Jing-shuang LIU Jin-da WANG Chong-yu SUN Effects of Wetland Reclamation on Soil Nutrient Losses and Reserves in Sanjiang Plain, Northeast China Journal of Integrative Agriculture wetland reclamation Sanjiang Plain organic carbon total nitrogen total phosphorus |
| title | Effects of Wetland Reclamation on Soil Nutrient Losses and Reserves in Sanjiang Plain, Northeast China |
| title_full | Effects of Wetland Reclamation on Soil Nutrient Losses and Reserves in Sanjiang Plain, Northeast China |
| title_fullStr | Effects of Wetland Reclamation on Soil Nutrient Losses and Reserves in Sanjiang Plain, Northeast China |
| title_full_unstemmed | Effects of Wetland Reclamation on Soil Nutrient Losses and Reserves in Sanjiang Plain, Northeast China |
| title_short | Effects of Wetland Reclamation on Soil Nutrient Losses and Reserves in Sanjiang Plain, Northeast China |
| title_sort | effects of wetland reclamation on soil nutrient losses and reserves in sanjiang plain northeast china |
| topic | wetland reclamation Sanjiang Plain organic carbon total nitrogen total phosphorus |
| url | http://www.sciencedirect.com/science/article/pii/S2095311912600379 |
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