Guo Zhang

3 Questions 13 Answers 0 Followers

Questions related from Guo Zhang

How to fix a relationship between predator and prey in SEM model?

Dear Experts, Currently I am designing a structural equation modeling (SEM) of soil food web. I am wondering how to fix a relationship between predator and prey in R language: predator → prey,...

15 May 2025 4,096 6 View

How to calculate economic cost of farming practices during crop production?

Currently I want to calculate economic cost of crop production from soil preparation to crop harvest according to life cycle assessment (LCA), but I am puzzled by: (1) Is there a term "economic...

21 July 2016 4,240 4 View

How can I estimate the integrated effects of no tillage, fertilization, and crop residue return on soil carbon sequestration in croplands?

The fertilization, no tillage and crop residue return can increase soil carbon sequestration in croplands. I want to estimate the integrated effects of these practices on C sequestration. I...

19 June 2015 8,765 15 View