亚洲人成网站18禁止中文字幕,国产毛片视频在线看,韩国18禁无码免费网站,国产一级无码视频,偷拍精品视频一区二区三区,国产亚洲成年网址在线观看,国产一区av在线

Home / Environment / News Tools: Save | Print | E-mail | Most Read
Forest Area Damaged by Pests Expands
Adjust font size:

Pests like moths, wireworms and hares damaged 10.72 million hectares of forest across China in 2006, up 20 percent year-on-year and more than the new forest areas last year, the State Forestry Administration (SFA) said on Wednesday.

 

China recorded 292 major species of forest pests last year, an increase of 98 over the figure provided by the country's first nationwide investigation into forest pests that lasted from 1979 to 1983.

 

Of the total, 32 species were exotic and 16 had been introduced into the country since 1980.

 

Figures for economic losses caused by the pests in 2006 are not yet available, said SFA spokesman Cao Qingyao.

 

Pest control covered 6.03 million hectares in 2006, bringing major plant diseases under control, said Cao.

 

The number of forest rats declined from four to eight per mu (0.067 hectare) to just 0.4 per mu in northwest China's Shaanxi Province.

 

Meanwhile, four people died in seven cases of wasp attacks in the province last year while 36 died in 715 cases in 2005.

 

Cao said the SFA had listed the "extremely dangerous" American white moth, pine wireworm and forest rats and hares as the main targets of its efforts to control pests over the next five years.

 

American white moths were identified in 224,000 hectares of forest in Beijing, Tianjin and north China's provinces of Hebei and Liaoning last year, but control measures stifled disasters in the cradle.

 

(Xinhua News Agency January 11, 2007)

Tools: Save | Print | E-mail | Most Read

Related Stories
Invasive Forest Pests Cause Billions Losses
New Natural Enemy of Forest Pest Found in China
SiteMap | About Us | RSS | Newsletter | Feedback
SEARCH THIS SITE
Copyright ? China.org.cn. All Rights Reserved ????E-mail: webmaster@china.org.cn Tel: 86-10-88828000 京ICP證 040089號(hào)
    1. <ul id="556nl"><kbd id="556nl"><form id="556nl"></form></kbd></ul>
      <thead id="556nl"></thead>

      1. <em id="556nl"><tt id="556nl"></tt></em>
        <ul id="556nl"><kbd id="556nl"><form id="556nl"></form></kbd></ul>

        <ul id="556nl"><small id="556nl"></small></ul>
        1. <thead id="556nl"></thead>

          亚洲人成网站18禁止中文字幕,国产毛片视频在线看,韩国18禁无码免费网站,国产一级无码视频,偷拍精品视频一区二区三区,国产亚洲成年网址在线观看,国产一区av在线 人妻无码久久影视 日韩久久久久久久久久久久 精品国产香蕉伊思人在线 无码国产手机在线a√片无灬 91在线视频无码