One spring i planted corn too early in a bottomland so flood - prone that neighbors laughed 有一年春天，我在一片容易被淹的低洼地过早地种下了玉米，邻居们都为此嘲笑我。
2.
As bottomland , soil depth and gavel content are not taken into account , altitude 800 m and slope = 5 are the criteria of unsuitable for cultivation temporarily 对滩涂类单元，不考虑单元的土层厚度与砾石含量，以海拔800米且坡度5判断其是否为当前不宜耕。
3.
The amount of cultivated land decreased , in - order , from the bottomlands to the hills with soft covers , the hills with hard covers and sand lands , while the amount of grassland is in an opposite direction 即由滩地、软梁地、硬梁地到沙地，耕地的出现频率依次减少，草地则依次增多。但此规律受人类活动等影响，差异变小。
4.
Except hydropower wash , another important cause of the difference is that shallow stratum soil mass bulk movement make local shallow surface sediment fill deep water bottomland , so slow up the deep rate of deep water bottomland 这种差异除水动力冲蚀外，另一个重要的原因是浅地层土体块体运动使局部浅水区表层沉积物向深水洼地填充，减缓了深水洼地加深速率。
