Zhang Kaoping

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Questions related from Zhang Kaoping

How much are the root exudation rates in temperate grassland?

Can anyone give me some clues about how much are the root exudation rates in temperate grassland? Thank you!

19 April 2017 7,905 3 View

R: use cophenetic() to calculate distance given a Error in double(nm * nm) : vector size cannot be NA?

I want to calculate the distance matrix of a phylogenetic tree which is stored in R as a class “large phylo”. This tree have 23197 tips. when I use cophenetic() to calculate the distance matrix, a...

05 April 2017 8,570 2 View

How to examine priority effects in rhizospheric microbial community?

Hello , everyone. I measured the rhizospheric fungal community by ITS2 sequencing and found greater within site dissimilarity in rhizospheric compartment than thoes in bulk soil. I wonder of...

27 February 2017 939 5 View

How to use t-distribution to evaluate the different between slops of curves?

For example, I had two group of samples, I calculated the distance decay-rates of the two groups of samples respectively, then I got two values DDRa and DDRb. How can I test the difference between...

25 May 2016 6,873 4 View

How to perform a partial distance-based redundancy analysis?

Hello everyone, I wonder anyone can give me some guidance about db-RDA analysis. Thank you! The following is my code. data(B) #B is the genetic distance matrix for bulk soil#data(env_B) # env_B is...

04 April 2016 6,329 2 View