Author :
Xia, Jiangbao ; Lu, Zhaohua ; Li, Chuanrong ; Gao, Peng
Author_Institution :
Shandong Provincial Key Lab. of Eco-Environ. Sci. for Yellow River Delta, Binzhou Univ., Binzhou, China
Abstract :
To study the eco-hydrological characteristics of typical vegetation community (Robinia pseudoacacia, Populus euramericana, Fraxinus chinensis) in lowlands of the Yellow River Delta, taking bare area as the control. Soil hydro-physical properties, soil water infiltration and soil water-storage capacity of three kinds of vegetation community were determined in field and laboratory. The results were showed that:1) Compared with bare area, soil hydro-physical properties, such as: soil density, porosity and void ratio, were much better than bare area, the improvement effect showed this order: R. pseudoacacia >; P. euramericana >; F. chinensis, and these indexes of 0~20 cm were better than that of 20~50 cm. 2) Exponentiation model could better reflect the soil infiltration course of different vegetation community in research area. Soil infiltration capacity in typical vegetation community was better than that in bare area, and the average penetration rate of R. pseudoacacia, P. euramericana, F. chinensis was 2.22, 1.78, 1.59 times, respectively, larger than that of bare area. 3) Characteristics of soil capillary, non-capillary porosity water-holding capacity, soil total absorption precipitation and effective precipitation showed this order: R. pseudoacacia >; P. euramericana >; F. chinensis >; bare area, and soil water-holding capacity in 0~20 cm was better than that of 20~50 cm. Accordingly, we concluded that: Judging from soil hydro-physical properties, soil infiltration and water-holding capacity, R. pseudoacacia was better than P. euramericana, and F. chinensis was poor. Therefore, based on eco-hydrological characteristics and water conservation function, R. pseudoacacia and P. euramericana had better be planted in similar soil condition in lowlands of the Yellow River Delta.
Keywords :
ecology; environmental factors; hydrology; porosity; rivers; soil; vegetation; Fraxinus chinensis; Populus euramericana; Robinia pseudoacacia; Yellow River delta; average penetration rate; effective precipitation; exponential model; soil capillary porosity; soil density; soil ecohydrological characteristics; soil hydrophysical properties; soil infiltration capacity; soil infiltration course; soil noncapillary porosity; soil porosity; soil total absorption precipitation; soil void ratio; soil water holding capacity; soil water infiltration; soil water storage capacity; vegetation community; Communities; Indexes; Rivers; Soil; Vegetation; Water; Water conservation; Yellow River Delta; eco-hydrological function; soil water infiltration; vegetation community; water holding capacity;
