苏北沿海防护林对土壤脱盐及脱盐稳定性的影响

INFLUENCES OF SEA-COAST PROTECTIVE FOREST ON SOIL DESALTING AND DESALTING STABILITY

以苏北沿海主要防护林树种刺槐（ＲｏｂｉｎｉａｐｓｅｕｄｏａｃａｃｉａＬ．）和水杉（ＭｅｔｅａｓｅｑｕｏｉａｇｌｙｐｔｏｓｔｒｏｂｏｉｄｅｓＨｕｅｔＣｈｅｎｇ）为研究对象，以农田和滩涂作对照，从土壤盐分含量、时空分布规律等方面，揭示了苏北沿海防护林对土壤脱盐及其脱盐稳定性的影响，表明在具备一定水利设施基础上，造林和农业耕作都能加速土壤脱盐过程，但在稳定脱盐效果，防止旱季“返盐”等方面，林业措施更为有效。

The soil salt content and distribution pattern with month and depth are studied in the seacoast protective forest.The results show that forestation and agriculture all can promote the soil desalting process,but the forestation seems more effective than that of agriculture in keeping desalting stability and preventing resalinization.