CAJ | 학술논문

当前地表水体环境问题日益突出,磷素作为水体富营养化的关键控制因子而备受关注.本研究通过实地采样分析,研究了武汉市郊区典型利用方式下土壤磷素形态剂含量特征,并分析了其流失风险.结果表明:不同利用方式下的土壤磷素水平差异较大,各形态磷水平排序是蔬菜地＞稻田＞常规旱地＞苗圃地;武汉城郊0～20cm表层土壤全磷(TP)含量为255.4～1763.1mg/kg,平均值为975.4mg/kg;土壤有效磷(Olsen-P)为13～164.2mg/kg,平均值为56.4mg/kg;藻类有效磷(NaOH-P)含量为33.4～910.7 mg/kg,平均值为204.0mg/kg; 土壤Olsen-P为56.0mg/kg可作为武汉市郊区土壤磷素流失的临界值,且超过该临界值的土样有34.9%,其中有93.3%采自蔬菜地,表明各利用方式下蔬菜地土壤磷素流失风险最高.
당전지표수체배경문제일익돌출,린소작위수체부영양화적관건공제인자이비수관주.본연구통과실지채양분석,연구료무한시교구전형이용방식하토양린소형태제함량특정,병분석료기류실풍험.결과표명:불동이용방식하적토양린소수평차이교대,각형태린수평배서시소채지＞도전＞상규한지＞묘포지;무한성교0～20cm표층토양전린(TP)함량위255.4～1763.1mg/kg,평균치위975.4mg/kg;토양유효린(Olsen-P)위13～164.2mg/kg,평균치위56.4mg/kg;조류유효린(NaOH-P)함량위33.4～910.7 mg/kg,평균치위204.0mg/kg; 토양Olsen-P위56.0mg/kg가작위무한시교구토양린소류실적림계치,차초과해림계치적토양유34.9%,기중유93.3%채자소채지,표명각이용방식하소채지토양린소류실풍험최고.
Phosphorus (P) as the restricting factor that leads to water eutrophication is always given to attention with the surface waters environmental problem getting obvious in China. Based on the field survey the soil phosphorus contents in the suburbs of Wuhan, the soil phosphorus characteristics under different land utilizations were studied and the loss risk was analyzed. Results showed that there was significant difference in the content of soil phosphorus under different land utilizations. As to various lands use type, the order of different soil phosphorus content is as vegetable soil＞ paddy field＞ the other dry lands＞ nursery. In the upper soil layer of 0～20cm under different land use type, the content of total phosphorus was 255.4～1763.1mg/kg, and the mean was 975.4mg/kg. The content of Olsen-P was 1.3～164.2mg/kg, and the mean was 56.4mg/kg and the content of NaOH-P was 33.4～910.Trng/kg, and the mean was 204.1mg/kg. The content of Olsen-P was 56.0mg/kg was critical value that could be used to evaluate the loss risk of soil phosphorus. There were 34.9% in all soil samples that exceeded 56.0mg/kg and 93.3% of them were vegetable soil.