Spatial Variability of Soil DNA in China Fir and Masson Pine Mixed Forest in Three Gorger Reservoir Areas

• Published in: Forest research (Beijing) Vol. 25; no. 5; pp. 664 - 669
• Main Authors: Lin, Y-H, Wang, L-F, Lu, P, Tian, X-K, Xiao, W-F
• Format: Journal Article
• Language: Chinese
• Published: 01.10.2012
• Subjects: Cunninghamia lanceolata; Pinus massoniana; China, People's Rep
• ISSN: 1001-1498

Soil samples were collected to a depth of 20 cm using a 3.0 m x 3.0 m grid in 900 m super(2) (30.0 m x 30.0 m) plots for analysis of spatial patterns of soil in undisturbed area of China fir (Cunninghamia lanceolata) and Mas-son pine (Pinus massoniana) mixed forest in the Three Gorger Reservoir Areas. The investigation data showed that the average of soil DNA content was 922.71 mu g times g super(-1) water-free soil, the maximal value was 6761.30 mu g times g super(1) water-free soil, and the less value 58.52 mu g times g super(-1) water-free soil. The geostatistical analysis indicated that the spatial distribution characteristic was not obviously reflected by the liner graphs while samples were randomly distribution and independent each other. The separation distance among samples was related to precision of soil DNA content, the effects of non-structure factors (environment factors, disturbed factors) on spatial correlation structure would disappeared due to the separation distance in excess of 18.84 m, and