河北坝上的盐渍化草场及其演替规律

THE SALT GRASSLAND AND IT'S SUCCESSION LAW IN BA-SHANG REGION OF HEBEI

草场的盐渍化与地形、气候、水分、土壤有直接关系,而不合理利用和盲目开垦是导致其形成的主要原因。河北坝上的盐渍化草场主要分布在中部的波状高平原中,包括,丛生禾草盐生草甸、杂类草盐生草甸和一年生盐生植物群落。盐渍化草场不断发生变化,而土壤盐分的变化是造成其演替的主要原因。

The salinization of grassland is directly concerned with the topography,climate, water and soil. But the main forming reason is the abuse and blind reclaimation. The salt grassland of Ba shang Region of Hebei provence is mainly distributed over the mid undulate plateau。It contains the rosette grass saline medow, the forb saline medow and the annual saline plant community。The salt grassland changes continously。But the changing of the soil salinity is the main reason to the grassland succession。