Some of the respondents were not convinced
that ants and earthworms were useful indicators
of soil sustainability, or the evidence was conclusive.
Nevertheless, Andersen (1990, 1993) has conducted
various studies in mine-site rehabilitation
using ant communities as indicators of successful
habitat restoration. Wylie (1994) saw earthworm
abundance as a poor indicator of sustainability
and noted that earthworm numbers can be low in
what is considered a 'healthy', well-structured
soil. This observation is not unique and soil
macrofauna indicators would need to be tailored
to particular soil types, land use types and climatic
regions. There would be little point in using
national or regional soil macrofauna indicator of
soil health because of their patchy distributions,
but if combined with other soil measurements,
they could be useful indicators at the farm scale.
Some of the respondents were not convinced
that ants and earthworms were useful indicators
of soil sustainability, or the evidence was conclusive.
Nevertheless, Andersen (1990, 1993) has conducted
various studies in mine-site rehabilitation
using ant communities as indicators of successful
habitat restoration. Wylie (1994) saw earthworm
abundance as a poor indicator of sustainability
and noted that earthworm numbers can be low in
what is considered a 'healthy', well-structured
soil. This observation is not unique and soil
macrofauna indicators would need to be tailored
to particular soil types, land use types and climatic
regions. There would be little point in using
national or regional soil macrofauna indicator of
soil health because of their patchy distributions,
but if combined with other soil measurements,
they could be useful indicators at the farm scale.
การแปล กรุณารอสักครู่..
