Figures & data
Fig. 1 Map of the Yellow River basin. The dotted line shows the Hekouzhen-Longmen drainage area.
Fig. 2 Temporal variation in annual green-water coefficient (C gw) and the amount of green water in the Hekouzhen-Longmen drainage area.
Fig. 3 Relationship between green water and annual precipitation: (a) annual amount of green water as a function of annual precipitation for different periods; and (b) slope of the equation fitted for five time periods.
Fig. 4 Comparison of temporal variation in green-water coefficient (C gw) with that in climate indices: (a) precipitation; (b) summer monsoon intensity, SMI; and (c) air temperature.
Fig. 5 Relationships between green-water coefficient (C gw) and 5-year averages of climate indices: (a) summer monsoon intensity, SMI; (b) precipitation; and (c) air temperature.
Fig. 6 Variation in time of the area of soil and water conservation measures: (a) four individual measures; and (b) total area of measures.
Fig. 7 Relationships between green-water coefficient (C gw) and the relative area of different soil and water conservation measures: (a) land terracing; (b) planting of trees; (c) planting of grass; and (d) the land created by the checkdam-trapped sediment.
