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| Responses of Soil Nutrients to Land Use Changes from Rice Production to Vegetable Cultivation or Viticulture：A Case Study in Fuyang City, Zhejiang Province |
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| KeyWord:land use change; cultivation years; soil nutrients |
| Author Name | Affiliation | | PAN Xia | Key Laboratory of Soil Environment and Pollution Remediation, Chinese Academy of Sciences, Nanjing 210008, China
University of Chinese Academy of Sciences, Beijing 100049, China | | CHEN Li-ke | Key Laboratory of Soil Environment and Pollution Remediation, Chinese Academy of Sciences, Nanjing 210008, China | | WU Long-hua | Key Laboratory of Soil Environment and Pollution Remediation, Chinese Academy of Sciences, Nanjing 210008, China | | TENG Ying | Key Laboratory of Soil Environment and Pollution Remediation, Chinese Academy of Sciences, Nanjing 210008, China | | LUO Yong-ming | Key Laboratory of Soil Environment and Pollution Remediation, Chinese Academy of Sciences, Nanjing 210008, China
Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China |
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| Abstract: |
| Changes in land use may alter soil microbial, chemical and physical properties, thus influencing soil nutrients. Soil nutrient changes were investigated after changing paddy rice to asparagus production, to vineyards, or to field mustard cultivation in Fuyang city, Zhejiang province. Changing from paddy rice to asparagus production increased total organic C, total N, total P, total K, NO-3-N, Bray-P, and NH4OAc-K） in surface soils（P<0.05）, with an exception of NH+4-N. Total N, total K, and NO-3-N were also found to increase in subsurface soil layer. Similar nutrient changes were observed in other two types of land use changes, but with greater changes found in extractable than in total nutrients. Nutrient responses to land use changes were different among different use types. The greatest increases in total N and total K was found in asparagus production, NH4OAc extractable K in viticulture and NO-3-N in field mustard. The results suggest that land use changes from paddy rice to cash crops might cause agricultural pollution via nutrient leaching, and suitable planning is necessary to maintain agricultural sustainability. |
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