国内精品一区二区三区最新_不卡一区二区在线_另类重口100页在线播放_精品中文字幕一区在线

Home
Letters to Editor
Domestic
World
Business & Trade
Culture & Science
Travel
Society
Government
Opinions
Policy Making in Depth
People
Investment
Life
Books/Reviews
News of This Week
Learning Chinese
Crack Squad to Aid Earth's Surface

About 800 experts and scholars from 70 countries and regions will gather in Beijing next week to seek an effective solution to control water loss and soil erosion in a bid to rehabilitate the world's ecosystem.

They will attend the 12th International Soil Conservation Conference scheduled to be held in Beijing from Monday to May 31, the first such event to be hosted by China, an official announced Thursday.

The biennial event has been treated as "an Olympic gathering of the world's elite working for controlling water loss and soil erosion as it will fully reflect regional and worldwide achievements in the field," said the official.

Liu Zhen, director of the conference's organizing committee, said the meeting will focus on "the protection of global water and soil resources and their sustainability."

Experts and scholars will also discuss measures to tackle six other issues plaguing the world's water and soil conservation, including the exploitation of rivers' valleys, the monitoring and assessment of water and soil conservation, related policies and actions and the control of extending desertification.

To date, more than 700 thesis have been submitted to the organizing committee.

Land degradation has affected 65 percent of the world's land due to soil erosion, land salinization and desertification, Jiao said.

From 1957 to 1990, farmland destroyed by land degradation in the world was equivalent to the total cultivated lands of Denmark, France, Germany and the Netherlands, statistics indicated.

Soil erosion has plagued about 12 percent of Europe's land mass (115 million hectares), with 4 percent of the continent's land (42 million hectares) suffering from wind erosion.

In North America, land degradation, caused mainly by eroded soil, has affected some 95 million hectares of land.

And in Africa, land degradation since 1950 has affected 500 million hectares of land - more than 65 percent of its farmland.

To date, damage resulting from water and wind erosion, and land salinization, has reportedly cost South Asia US$5.4 billion, US$1.8 billion and US$1.5 billion respectively.

International communities have attached great importance to the problem, which has led to environmental deterioration, regional poverty and lagging economies in many areas.

(China Daily May 24, 2002)

Soil Erosion Control Stepped Up in Tibet
Water Saving A Hot Topic in China
Major Projects to Reduce Yangtze Soil Erosion
Spring Drought Looms for China
Xinjiang Battles Soil Erosion
Severe Water Shortage in 110 Cities
Water Resources Become Urgent Issue for China
Water Crisis Predicted for China by 2030
New Technology to Help Curb Black Earth Erosion
Funds Increased to Fight Soil Erosion
Copyright ? China Internet Information Center. All Rights Reserved
E-mail: webmaster@china.org.cn Tel: 86-10-68996214/15/16
国内精品一区二区三区最新_不卡一区二区在线_另类重口100页在线播放_精品中文字幕一区在线
国产成人啪午夜精品网站男同| 成人黄色在线看| 国产精品久久777777| 欧洲精品中文字幕| 激情综合网天天干| 亚洲精品国产无天堂网2021| 欧美丰满少妇xxxxx高潮对白| 国产在线精品一区二区三区不卡| 国产精品久久久久久久岛一牛影视| 5566中文字幕一区二区电影| 99精品视频一区| 国产一区二区三区最好精华液| 香蕉久久一区二区不卡无毒影院 | 精品区一区二区| 91精品国产综合久久久久久久| 菠萝蜜视频在线观看一区| 黑人巨大精品欧美黑白配亚洲| 日韩电影在线观看网站| 日韩精品午夜视频| 丝袜国产日韩另类美女| 亚洲午夜激情av| 亚洲成av人片一区二区| 亚洲国产综合人成综合网站| 亚洲黄色性网站| 亚洲最色的网站| 亚洲福利国产精品| 精品影视av免费| 国产一区二区三区久久久| 精品一区二区在线观看| 国产+成+人+亚洲欧洲自线| 国产精品一二三四| 一本久久精品一区二区| 欧美日韩国产色站一区二区三区| 欧美中文字幕一区| 精品久久久久久亚洲综合网 | 亚洲欧美色综合| 麻豆91精品91久久久的内涵| 国产美女精品一区二区三区| 成人h精品动漫一区二区三区| 99久久精品一区| 91精品国产乱码| 亚洲欧洲在线观看av| 麻豆一区二区99久久久久| 欧美xfplay| ●精品国产综合乱码久久久久 | 亚洲色欲色欲www在线观看| 亚洲一区二区av在线| 九一久久久久久| 日本道免费精品一区二区三区| 91精品国模一区二区三区| 亚洲三级电影网站| 国产成人亚洲综合a∨婷婷图片| 日本大香伊一区二区三区| 国产亚洲精品中文字幕| 精品一区二区三区免费视频| 欧美亚洲国产一区二区三区| 中文欧美字幕免费| 国产一区二区0| 欧美大黄免费观看| 日本sm残虐另类| 欧美一区三区二区| 日韩高清在线不卡| 在线播放国产精品二区一二区四区 | 久久免费的精品国产v∧| 国产一区在线观看视频| 久久久亚洲国产美女国产盗摄| 美女视频黄 久久| 日韩精品一区二区三区在线| 久久精品国产一区二区| 久久精品亚洲精品国产欧美 | 久久99国产精品尤物| 国产亚洲精久久久久久| 成人sese在线| 亚洲不卡在线观看| 精品国产3级a| 91免费在线视频观看| 亚洲成人精品影院| 欧美xxxx老人做受| 国产a级毛片一区| 亚洲综合视频在线| 国产日韩三级在线| 欧美日韩激情一区| 国产在线精品不卡| 亚洲精品少妇30p| 精品国产乱码久久| 日本高清成人免费播放| 青青草国产成人99久久| 国产精品久久久久久久午夜片| 欧美视频完全免费看| 国产成人在线色| 丝袜美腿一区二区三区| 国产精品女主播av| 日韩欧美在线不卡| 欧美亚州韩日在线看免费版国语版| 久久福利资源站| 亚洲一区在线电影| 中文字幕一区不卡| 国产精品入口麻豆原神| 久久久久九九视频| 亚洲欧美综合色| 久久精品网站免费观看| 精品999久久久| 久久久久久久电影| 国产色一区二区| 国产精品女上位| 国产精品传媒视频| 亚洲同性同志一二三专区| 国产性天天综合网| 1000精品久久久久久久久| 中文字幕av一区二区三区免费看| 久久久亚洲午夜电影| 国产精品毛片a∨一区二区三区| 国产精品超碰97尤物18| 一区二区三区资源| 亚洲不卡一区二区三区| 久久精品国产亚洲高清剧情介绍| 免费成人在线网站| 国产精品原创巨作av| 欧洲av一区二区嗯嗯嗯啊| 777奇米成人网| 国产欧美日韩三级| 亚洲尤物在线视频观看| 日韩国产精品久久| 99久久久无码国产精品| 欧美日韩在线精品一区二区三区激情| 欧美精品在线观看一区二区| 国产日韩欧美不卡在线| 一卡二卡三卡日韩欧美| 国产一区二区三区最好精华液| 99精品国产热久久91蜜凸| 欧美一卡二卡三卡四卡| 亚洲美女视频在线观看| 大白屁股一区二区视频| 3atv在线一区二区三区| 亚洲人成小说网站色在线| 国产一区二区视频在线播放| 欧美一级免费大片| 亚洲精品写真福利| 成人av免费网站| 中文字幕免费不卡在线| 久久er99热精品一区二区| 欧美放荡的少妇| 亚洲高清在线视频| 日本高清不卡aⅴ免费网站| 国产偷国产偷亚洲高清人白洁| 久久精品国产精品亚洲精品| 在线视频国产一区| 亚洲天堂久久久久久久| 99在线精品免费| 亚洲视频在线观看一区| 色婷婷精品大在线视频| 亚洲欧美偷拍三级| 欧美精品日韩综合在线| 天天色天天操综合| 欧美一区二区三区系列电影| 丝袜国产日韩另类美女| 精品少妇一区二区三区在线播放 | 国产精品免费久久| 在线中文字幕不卡| 久久精品99国产精品日本| 久久精品视频在线看| 9l国产精品久久久久麻豆| 亚洲色图视频网站| 欧美亚洲高清一区二区三区不卡| 日韩av一区二| 久久毛片高清国产| 欧美艳星brazzers| 国产一区二区在线电影| 伊人一区二区三区| 久久精品亚洲乱码伦伦中文| 91福利在线导航| 国产精品99久久久久久有的能看 | 一区二区三区四区乱视频| 精品久久一区二区| 欧美在线观看一区| 成人综合激情网| 强制捆绑调教一区二区| 亚洲蜜臀av乱码久久精品蜜桃| 精品日本一线二线三线不卡| 欧美中文字幕不卡| 风间由美一区二区三区在线观看 | 在线观看一区二区视频| 丁香网亚洲国际| 青青草97国产精品免费观看| 中文字幕日本不卡| 91麻豆国产香蕉久久精品| 国模冰冰炮一区二区| 亚洲一级片在线观看| 午夜精品久久久久久久久久久| 亚洲素人一区二区| 麻豆精品久久久| 色域天天综合网| 久久这里只有精品首页| 亚洲成av人影院| 成人午夜av电影| 欧美v国产在线一区二区三区| 亚洲婷婷在线视频| 丰满少妇在线播放bd日韩电影| 日韩一区二区不卡| 亚洲成人第一页|