| 6. Discuss the rule of how to select the plants planted in the Hydro-fluctuation Belt of Danjiangkou Reservoir Area. Some other ligneous plants And herbaceous plants are used for reference. Some plants are respectively chosen to be planted in th the upper, middle and bottom of the Hydro-fluctuation Belt.7. Discuss the comprehensive reasons why the vegetation in the Hydro-fluctuation Belt of Reservoir Area is difficult to survive. It is not only because of submergence, but also the drought. So drought should be as a factor into consideration when studing the plant in the Hydro-fluctuation Belt of Reservoir Area, which has important reference value when chosing suitable plants for Hydro-fluctuation Belt of Reservoir Area.8. Discuss how to set the time when plants should be in water logging condition. The water level in Reservoir Area won’t be sharply higher until September or October. So plants should be in submergence condition in September or October when studying, In view of this, it is not wise to use any submerge-fast plants for reference. |
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