[Preliminary study on total sulfur in typical marsh wetland and arable soils in Sanjiang Plain].
Three primary marsh types including Calamagrostis angustifolia marsh, Carex lasiocarpa marsh and Carex meyeriana marsh and the arables land reclaimed in different years were selected as studying objects, and the total sulfur in these soils were analyzed. The results indicated that the mean total sulfur was 622.4 mg.kg-1 in Calamagrostis angustifolia marsh soils, 820.5 mg.kg-1 in Carex meyerianan marsh soils, and 1,022.4 mg.kg-1 in Carex lasiocarpa marsh soils. Naoli River, Bielahong River, Yalu River and Nongjiang River are the four typical rivers in Sanjiang Plain. The mean total sulfur was 925 mg.kg-1 in Naoli Valley soils, 708.6 mg.kg-1 in Bielahong Valley soils, 841.8 mg.kg-1 in Yalu Valley, and 636.5 mg.kg-1 in Nongjiang Valley. The total sulfur in both marshes and arable soils presented distinct regularity, namely it gradually decreased from surface soil to botteom. The average total sulfur in the arable land reclaimed between 1980 and 2000 was 180.5 mg.kg-1, and it was 735.8 mg.kg-1 in natural marsh soils. So the total sulfur in arable land was remarkably lower than that in the marshes, and the reclamation could result in sulfur loss.
Hao
Qingju
Q
Institute of Northeast Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012, China. haoqj1976@netease.com
Wang
Qichao
Q
Wang
Qicun
Q
Li
Zhibo
Z
D003247:Conservation of Natural Resources; D017753:Ecosystem; D012987:Soil / Q000032:analysis*; D013455:Sulfur / Q000032:analysis*
D012987:Soil; D013455:Sulfur