Wind
erosion is the first step to sandy desertification, and it is obvious that the accurate measurement and estimation of
Wind erosion rate is urgent and essential. Owing to the complexity, randomness and boundlessness of the processes, it is difficult to measure or estimate the wind erosion rate precisely at present. Current methods that include field observation, wind tunnel tests and wind erosion model have some limitations in their practicability, cost and accuracy. The world\|fallout of \{\{\}137Cs\} associated with the nuclear weapons tests during 1950s and 1960s has provided a valuable man\|made tracer for studing
soil erosion and sediment delivery. Since its first introduction in the 1970s, \{\{\}137Cs\} technique has received wide application in water erosion research, leading to profound accomplishments. But it was not applied to wind erosion until the 1990s and still remains insufficiency in this respect. Taking the
Gonghe Basin in Qinghai Province as the study area, the paper attempts to introduce the \{\{\}137Cs\} method to study soil wind erosion. Through specific
sampling strategy and methods, large number of \{\{\}137Cs\} samples with different soil
types or land uses are gathered and analyzed. From those \{\{\}137Cs\} data, some \{\{\}137Cs\} distribution characteristics over the whole
area are clarified. The 0～30 cm \{\{\}137Cs\} activity of different land types is found to be in the order of woodland>\%playa\%>cold grassland>dry farmland≈dry grassland>fixed dune>desertified grassland>shifted dune>eroded land, while the \{\{\}137Cs\} inventory of different land types is in the order of \%playa\%>woodland>shifting dune>cold grassland>dry farmland≈dry grassland>fixed dune>desertified grassland>eroded land. The \{\{\}137Cs\} distribution in the soil profile can be divided into four types of normal profile, aggrading profile, eroding profile and disturbed profile. The cold grassland that maintained the relatively perfect normal profile of original \{\{\}137Cs\} fallout can be regarded as ideal sampling site of \{\{\}137Cs\} reference.
More abstracts about the Application of Caesium-137 Technique on Wind Erosion in Gonghe Basin, Qinghai Province (Ⅰ)-~(137)Cs