Publications by authors named "Wei-Ning Tan"
Understanding the spatial heterogeneity of soil available medium- and micro-elements in karst area can provide a valuable theoretical guideline for soil nutrient management of karst ecosystem. We collected soil samples at a soil depth of 0-10 cm using grid sampling (20 m×20 m) in a 25 hm (500 m×500 m) dynamic monitoring plot. We further analyzed the spatial variability of soil medium- and micro-elements and their drivers, with classic statistics analysis and geo-statistics analysis.
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- Tree mortality plays a critical role in determining forest ecology by influencing spatial patterns and interspecific relationships among tree species.
- A study conducted in the Mulun National Natural Reserve analyzed spatial point patterns before and after tree mortality, revealing that most tree species remained clustered but that some random distributions emerged post-mortality.
- The findings suggest that tree mortality lessens competition among dominant species, leading to a more stabilized community structure as evidenced by increased positive associations among species after tree deaths.
[Spatial heterogeneity of soil nutrients in Karst area's Mulun National Nature Reserve].
Ying Yong Sheng Tai Xue Bao
July 2010
Soil samples were collected from the depression (200 m x 100 m) in Karst area's Mulun National Nature Reserve by grid sampling method (20 m x 20 m), with the spatial heterogeneity of soil nutrients analyzed by the methods of classic statistics and geo-statistics. The soil pH showed small variation, while the soil nutrients showed moderate variation, being in the order of available phosphorus (AP) > available potassium (AK) > available nitrogen (AN) > organic matter (OM) > total potassium (TK) > total phosphorus (TP) > total nitrogen (TN). Spherical model fitted best for soil pH, exponential model fitted best for soil TK and AK, and Gaussian model fitted best for other variables.
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