Study On Bamboo Landscape Planning Based On Bamboo Expansion Characteristics

Bamboo forest is widely distributed in the southern part of China.It is not only important in climate regulation,regional ecological balance maintenance,ecological aesthetics,but also a unique landscape resource.Due to the rapid growth and strong invasiveness of bamboo forests,the area of bamboo forests has undergone tremendous changes,showing a clear expansion trend.The main environmental factors affecting the expansion of bamboo forests and how to control the speed of bamboo forest expansion in a long-term and sustainable manner have attracted the attention of scholars at home and abroad.The Ki Kungshan Nature Reserve in Henan Province,Gaoyang Township in Fujian Province,Xiaofeng Township in Zhejiang Province and Xitianmu Nature Reserve in Zhejiang Province are selected as research objects.Based on the bamboo forest extraction,the temperature,precipitation,population and economy are analyzed.The influence of expansion,and the Ki Kungshan Nature Reserve as a typical area,the landscape planning of the bamboo forest in the region,in order to achieve macroscopic control of bamboo forest expansion and sustainable development of landscape ecology.The main findings are as follows:(1)Using 12 remote sensing images of the research area in the past 30 years(1986-2017),the bamboo forest thematic information is extracted with the support of software platforms such as ENVI and ERDAS IMAGE.In the Ki Kungshan Nature Reserve,the bamboo forests are scattered from 1990 to 2017,mainly distributed in the six districts and nine districts of the protected area,with a growth rate of 7.8 hm~2/a;In the Gaoyang Township,the bamboo forest was concentrated from the northwest,northeast and south to the central part from 1988 to 2015,with a growth rate of 93.3hm~2/a;In the Xiaofeng Town,the bamboo forest expanded from the west to the east between 1986 and 2015,with a growth rate of 227.10 hm~2/a;In the Xitianmu Nature Reserve,the bamboo forest expanded from the central to the north and south,with a growth rate of 1.66 hm~2/a from1986 to 2015.(2)Using SPSS18.0 software,the natural factors such as temperature,precipitation and other human factors,population and economy were selected to analysis the Correlation with bamboo forest expansion.Principal component analysis showed that the first principal component was natural factor and the second principal component was human factor.The temperature factor was negatively correlated with the change rate of bamboo forest area,and the correlation with extreme minimum temperature was the strongest,and the correlation coefficient was-0.587.The correlation with the calculation of the highest temperature change is the lowest,the correlation coefficient is-0.346;the precipitation factor was positively correlated with the change rate of bamboo forest area,and the correlation of the maximum daily precipitation change was the largest,the correlation coefficient was 0.449;the population density change and the bamboo forest area in the population factor was negatively correlated,but the correlation was weak.The GDP change in economic factors was positively correlated with the rate of change of bamboo forest,and the correlation coefficient was 0.340.When discussing the influence factors in different regions,the correlation between temperature of bamboo in the Ki Kungshan Nature Reserve,Henan and Gaoyang Township,Fujian is negatively correlated with the change rate of bamboo forest area.The temperature and bamboo forest area change rate in Xiaofeng Town and Xitianmu Mountain Nature Reserve,Zhejiang are positively correlated.The precipitation rate of the Ki Kungshan Nature Reserve,Henan was negatively correlated with the change rate of bamboo forest area,and the other three research areas were positively correlated.The nighttime lighting data is used to characterize the impact of regional human social activities on the rate of change of bamboo forest area.The results show that the human social activities of the Ki Kungshan Nature Reserve and Gaoyang Township of Shunchang,Fujian were negatively correlated with the change rate of bamboo forest area.The human interaction between Xiaofeng Town and Xitianmu Mountain Nature Reserve,Zhejiang was positively correlated with the change rate of bamboo forest area.(3)The Ki Kungshan Nature Reserve was selected as a typical area.Based on the previous research,the regional bamboo forest is landscaped.The core landscape area and the bamboo forest growth control zone were delineated,and the bamboo forest expansion boundary is controlled by manual intervention such as ditches and landscape roads.Based on the results of the bamboo forest special information extraction,and taking the correlation analysis as a reference,relying on the existing attractions of Ki Kungshan,the bamboo forest landscape area will be added to increase new vitality to the scenic spot and realize the control of the disorderly expansion of the bamboo forest.