How to Determine Norms for Investigating and Assessing Land Degradation in Vietnam

18:04, 10/07/2024

Below is the prominent content stipulated in Circular 33/2016/TT-BTNMT promulgating the economical and technical norms for land investigation and evaluation in Vietnam.

When calculating the level for a specific region based on the survey area, the number of administrative units, and the actual topography of the region in Vietnam, use the following formula:

M_v = M_vtb x K_dtv x K_hcv x K_đhv + M_lm + M_pt

In which:

- M_v is the level of investigation and assessment of land degradation for a region.

- M_vtb is the level of investigation and assessment of land degradation for an average region.

- M_pt is the soil sample analysis level = norm/sample soil x the number of soil samples analyzed in the region.

- K_dtv is the area scale coefficient, calculated by interpolation method.

- K_hcv is the administrative unit coefficient, calculated by interpolation method.

- K_đhv is the difficulty of topography coefficient, calculated by the weighted average method.

- M_lm is the soil sampling investigation level for the region = norm/sample soil x the number of soil samples in the region.

See the full text of the regulation at Circular 33/2016/TT-BTNMT effective from December 22, 2016.

- Thanh Lam -

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