After appling soil ecological control agents,the plant height increased 2.39～4.07cm,the number of leaf increased 1～2 pieces,the leaf length increased 3.10～3.52cm,leaf area increased 11.94%～33.81%.
After appling soil ecological control agents,the plant height increased 0.25～2.51cm,the number of leaf increased 1～2 pieces,the leaf length increased 2.04～3.84 cm,leaf area increased 4.22%～66.61%.
From the viewpoint of coordinated development of small towns and regional landscape, to ensure landscape ecological planning to be implemented, " eight lines control" system and spatial control policies should be adhered to, and relative measures and means of ecological control should be proposed and adopted.
The article bases in the ecology studay water and plants system, and then analyses principle of water restraining particles pollution, discusses benefit of ecological adjustment and control in greenbelt system.
In addition ,we analyzed the meteorological condition and hydrographic condition and obtained that the method of ecological adjustment and control of enlargement of greenbelt and water surface of city can reduce the concentration of PM10.
After briefly reviewing the evolutive history, developing background and features of the management strategy on forestry pests, the disaster outbreak and primary reasons caused by poplar longhorned beetles, and systematically synthesizing and commenting on the domestic & foreign research development of them, we expanded studies on theory and techniques of ecological management of poplar longhorned beetle disaster in Shelter-Forest in this paper.
Based on the existing ecological cybernetics methods,and applying the concepts of landscape ecological planning,landscape ecological engineering,and landscape ecological management,this paper built a conceptual framework for the landscape ecological control in the Wujin District of Changzhou City,a representative of southern Jiangsu Province,aimed to avoid the negative changes and to ecologically optimize its urban-rural landscapes.
Since the artificial Cathaya argyrophylla forest in Hongtan Spot in Guangxi Huaping natural reserve, has suffered severe pest disasters in recent years, causing cathaya argyrophylla’s growth decline and death, we decided to investigat the pest species, research them to find out their biological characteristics and ecological characteristics, and take ecological management according to their growth discipline to build an promoting environment for the growth of the cathaya argyrophylla, but against the pests’breeding and growth.
The detection limit of the proposed procedure (0.1 μg/L) ensures reliable ecological control of natural waters; the relative standard deviation was 1-4% at a concentration level of n × 10-5%.
Our data provide insight into the biogeochemistry of the Kara Sea and make it possible to specify the background values needed for ecological control during the future exploration operations and extraction of hydrocarbons in the Kara Sea.
In comparison with integrated pest management and chemical control, the authors put forward a new strategy of forest pest control, named ecological control of forest pest (ECFP).
The shared benefit nature of jointadaptation, however, will cause individuals tounderprovide joint adaptation in such areas as watercontrol, sea walls, and ecological management.
生态调控
ecological regulation
查询“生态调控”译词为其他词的双语例句
查询“生态调控”译词为用户自定义的双语例句
其他
相关查询:
2008 CNKI－中国知网