Changes in the Contents of N,P, K, pH and Organic Matter of the Soil Which Experienced the Hydro-Fluctuation in the Three Gorges Reservoir | 三峡库区消落带土壤氮磷钾、pH值和有机质变化
2012
Guo Quanshui, CAF,Beijing (China),Research Institute of Forest Ecology, Environment and Protection | Kang Yi, Saihanba Mechanized Forest Farm of Hebei, Wechang (China) | Zhao Yujuan, CAF,Beijing (China),Research Institute of Forest Ecology, Environment and Protection
chinois. 在三峡库区消落带设置固定监测样地,研究消落带首次经历水库水位涨落后土壤氮磷钾含量、pH值和有机质含量的变化特征。结果表明：受三峡水库水位涨落影响,消落带0～10,10～20和20～30cm土层的速效氮含量下降41.53%～59.87%,速效磷含量下降5.26%～36.76%,速效钾含量下降3.55%～45.56%,全氮含量下降9.52%～40.00%,土壤有机质含量下降7.62%～37.83%,全磷和全钾含量基本上没有变化,土壤pH值略有变化,变幅为1.73%～9.58%。
Afficher plus [+] Moins [-]anglais. Setting monitoring transect in the middle and shallow water area （altitude 156 - 172 m） in Three Gorges reservoir hydro-fluctuation belt to research the changing characteristics of the contents of N, P, K, pH and organic matter of the soil which experienced the influence of fluctuation the first time. The results showed that by the influence of water level fluctuating, contents of soil N, P, K, pH and organic matter had reduced in different soil layers in hydro-fluctuation belt. The available N decreased by 41.53%-59.87%, available P decreased by 5.26%-36.76%, available K decreased by 3.55% -45.56% , total N decreased by 9.52% -40. 00% , total P had no change generally, total K had decreased a little, content of organic material decreased by 7.62% -37.83% % , pH value turned to neutral, changed by 1.73% - 9.58%.
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par Institute of Agricultural Information, Chinese Academy of Agricultural Sciences
Découvrez la collection de ce fournisseur de données dans AGRIS