Affiliations: Laboratory of Regional Climate-Environment Research
for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of
Sciences, Beijing 100085, China | Nanjing Forestry University, Nanjing 210037,
China
Abstract: A new technique was introduced for sand stabilization and
re-vegetation by use of lignin sand stabilizing material (LSSM). LSSM is a
reconstructed organic compound with lignin as the most dominant component from
the extracts of black-liquor issued by straw pulp paper mills. Unlike the
polyvinyl acetate or foamed asphalt commonly used for dune stabilization, the
new material is plant-friendly and can be used with virescence actions
simultaneously. The field experimental study was conducted since 2001 in
China's Northwest Ningxia Hui Autonomous Region and has been proved that LSSM
is effective in stabilizing the fugitive dunes, making the arenaceous plants
survive and the bare dune vegetative. The advisable solution concentration is
2% and the optimal field spraying quantity is 2.5 L/m^2. The
soil nutrients of the stabilized and greened dune, such as organic matter,
available phosphorous and total nitrogen are all increased compared with the
control treatment, which is certainly helpful to the growth of arenaceous
plants. The technique is worthwhile to be popularized because it is provided
not only a new method for desertification control but also an outlet for
cleaning contaminants issued from the straw paper mills.
Keywords: experimental study, lignin sand stabilizing material (LSSM), black-liquid, straw pulp paper mills
