Study on the afforestation of Poplus and the species diversity of herb in beach of Dongting Lake;

Study on the hydrographic situation of the Dongting Lake beach and the selection methods of poplar afforestation area;

The final cutting age of different density poplar plantation in beach;

Studies on multi-storied mixed forest types on beach land and its benefit;

Dynamic analysis on soil respiration of Populus plantation on beach land in Dongting Lake

The result shows that the size of the stand crown cover performs negative correlation with the density of Oncomelania hupensis on the beach land.

Test results show that the roughness of floodplain and turbulence of flow increase after flexible vegetation is planted in the floodplain of the waterway with a compound section,and that turbulence intensity peak is transferred to the floodplain from the intersection between the floodplain and the main channel.

This paper analyzes the mechanism of momentum transfer of the flows between main channel and floodplain.

Measurement and Evaluation on Ecosystem Services of Populus Ecological Protective Forests in Lowland of the Yellow River

In order to investigate the effect of different vegetation types on soil amelioration in lowlands of the Yellow River Delta,soil physics-chemistry property,microbial biomass of tree soil,shrub soil and grass soil in Hekou County,Dongying,Shandong province were studied by taking farmland as the control.

Compared with bare land,characteristics of soil hydrologic-physical properties,soil infiltration and water-holding of three kinds of forest vegetation are researched in lowlands of the Yellow River delta.

The ecology meaning of the wash and it's protection;

Analysis on simulation results of secondary migration and accumulation in beach area of Shengli petroliferous province.;

According to characteristics and request of reservoir evaluation, as well as the limitation of information in beach area, the method and workflow of integrated reservoir evaluation driven by seismic data is put forward in this paper.

In this paper,some questions appeared during the excavation of earthwork of pipe-pile foundation in the beach area have been discussed and researched.