ISSN 10674136, Russian Journal of Ecology, 2011, Vol. 42, No. 2, pp. 133–137. © Pleiades Publishing, Ltd., 2011.
Alien invasive plants are species introduced to a
region either accidentally or intentionally, whose
establishment in the new environment causes harm to
local ecosystem and native habitats. Impacts of these
aliens on local environment include competition
against native organism, altering ecosystem processes,
extinction of native organism, in worst cases; they also
cause damage to local ecology, to local environment,
and even to local economy (Xu et al., 2004).
In recent years, the expansion of human settlement
has brought alien invasive species to places outside
populated and human disturbed areas, enabling them
to spread to remote areas and even to wildness. Fortu
nately, awareness about environmental protection has
led to the setting up of nature reserves in China to
maintain the wellbeing of ecology and to protect
endangered flora and fauna (Jiang et al., 2007). To a
certain extent, these preserved lands are the only hab
itat that is available to the protection of endangered
species, because of its intact wildness free from human
disturbance. If their soundness suffers, so does biodi
versity in this region.
Jiangsu Province locate in east China, covers an
area between 30
N and 35
N latitude an
E and 121
E longitude. Associated
with a distinct transitional climate, this region features
The article is published in the original.
This project is funded by the Environment Protection projects
of China and Jiangsu Province.
Dong, Hongyun, female, born in Zaozhuang, Shandong Province.
She holds a Master’s degree in Sciences, and focuses on Morphol
ogy. Li, Ya, Contact author at firstname.lastname@example.org.
temperate deciduous broadleaf forest, subtropical
evergreen deciduous forest, and subtropical evergreen
broadleaf forest. Its mild climate and developed acces
sibility, compounded by its dense population, have
provided naturally favorable conditions to the trans
portation and survival of nonnative species. As a
result, Jiangsu Province is one of the worst habitats in
China, in terms of biome structure, suffering from for
est segmentation and nonnative colonization. Con
servation efforts in this region include setting up pro
tected areas to restore ecosystem structure, protect
native vegetation, and preserve biodiversity. By the end
of the year 2007, 31 conservation projects and 21 nat
ural parks had been listed as national or provincial
level protected areas.
Survey was performed in 2007 and 2008 in three
ecosystems in Jiangsu Province which belong to three
climate zones. The aim of this survey was to identify
alien invasive species and assess their impacts on
native ecosystem. Information collected in this survey
is intended to facilitate policy making and forestry
decisions that are aimed at biodiversity restoration,
tourism use of nature, conservation, protection of nat
ural landscape, and preserve zoning.
SURVEY SITES AND METHODS
The survey is conducted in three ecosystems, Yun
tai and Longchi Mountain Natural Reserves and Pur
ple Mountain Natural Park. Yuntai Mountain Natural
Reserve was founded in 1981 in Liangyungang,
Jiangsu Province. It is located in northeast Jiangsu,
Impacts of Invasive Plants on Ecosystems in Natural Reserves
in Jiangsu of China
Hongyun Dong, Ya Li
, Qing Wang, Gan Yao
Botany Institute of Jiangsu province & Chinese Academy of Sciences, Dr. Sun Yatsen Memorial Botanical Garden, Nanjing
1435, Jiangsu Province, 210014, China
email: valicnbg@yahoo. com.cn
Received January 13, 2010
—To estimate the impacts of invasive plants on ecosystems, a survey has been conducted in three
sites including both buffer zones and core zones. 13, 19 species are found in the Yuntai Mountain and Long
chi Mountain natural reserve respectively, and 23 in the Purple Mountain Natural Park. Altogether 25 species
belonging to 12 families, the majority of which are native to North America, some of them have set up stable
reproducible populations. Among them,
is found in Longchi Mountain and Purple
Mountain. Communities of
pose a serious threat to local biodiversity.
Jiangsu Province, alien invasive species, natural ecosystem