久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

US EUROPE AFRICA ASIA 中文
China / Society

A bumpy road to clean up China's contaminated land

(Xinhua) Updated: 2015-06-25 10:47

BEIJING - The vast swathes of polluted land and contaminated ground water caused by decades of reckless development has left its mark on China: This is a threat that can no longer be ignored.

Officially, 16 percent of China's soil and nearly 20 percent of farmland is polluted, however, ecologists warn, this may just be the tip of the iceberg.

In 2014, the Qingyuan City government, in the southern province of Guangdong, launched a pilot project to treat soil contaminated by heavy metals in Longtang Township, which was a hub for the processing of scrap metal for over 20 years.

Following experiments on farming and construction land "remarkable results" were observed, said Fang Xiaohang, a senior engineer with the South China Institute of Environmental Science, which provides technical support for the project.

Government-backed initiatives, like the one in Longtang, have cropped up across the country, as soil pollution, and contaminated crops, water and air become just too big to ignore.

As National Land Day falls on Thursday, ecologists are calling for clearer rules and supportive measures to ensure the success of land treatment projects: Its time to snow the seeds of change.

Catch up

Although many developed countries started to address soil pollution decades ago, China's own drive to clean up its own act is in its infancy.

"The government has spent heavily on research, and technology is developing rapidly," said Song Yun, chief engineer of the Environmental Protection Research Institute of Light Industry.

At the experiment sites in Longtang, chemicals have been used to stabilize heavy metals and reduce their activity on polluted land.

Before the project, samples of the local soil showed it contained worrying amounts of copper and 10 times more lead than the national standard.

Following remediation, Fang said, soil samples from one patch of land showed active heavy metal content was down by more than 50 percent, and rice grown on another plot was safe for consumption.

However, it is too early to celebrate, said Song, since current approaches in China were not developed enough for large-scale application.

"Restoring farmland, with a focus on ensuring the soil is suitable for growing crops, is much more difficult than treating land intended for construction," Fang said.

In addition, the high cost of treating polluted farmland, which can soar into the tens of thousands of US dollars per hectare, is a huge burden for the government, according to Song.

However, money is not a problem for real estate developers, whose top concern is time, Song said.

"A safe and inexpensive method to treat heavy metals on construction sites is to use microorganisms. It's popular abroad, but not in China. Why? Developers don't want to wait the three months to a year needed to see results," he said.

China's ability to treat polluted groundwater lags far behind that of its more developed peers, he said. "Meaning, once treated soil is very likely to be contaminated by polluted groundwater, again."

Absent rules

Compared with the technological challenges, the land treatment industry is struggling to grow due to a lack of rules to regulate the sector.

There are many unanswered questions, said Wang Shuyi, director of the Research Institute of Environmental Law under Wuhuan University.

"Who is responsible for the pollution? Who should pay for the treatment? What technical standards should be followed by treatment firms and how should their work be assessed?"

In China, it is hard to hold someone responsible for soil pollution, due to frequent transfer of company ownership, according to Yang Pingjian, a guest researcher with the Ministry of Environmental Protection.

In sharp contrast to the "polluters pay" principal widely adopted around the world, it is the state and developers that must foot the bill.

However, many are hopeful that a law on soil pollution, which is expected to be rolled out by 2017, could clear up some of these sticking points.

"We advised the drafters that the law should answer the questions I mentioned," said Wang, who also headed the law's advisory panel.

He said that the law may call for the establishment of a soil pollution monitoring system.

Gu Qingbao, a professor with the Chinese Research Academy of Environmental Sciences, called for incentives to attract more investment into land treatment.

The Land and Resources Ministry revealed that that the land treatment industry accounts for less than 1 percent of the total output of the environmental protection sector. In some developed countries, this proportion surpasses 30 percent.

In 2013, there were 500 land treatment firms in China. It is estimated that the market will be worth 40 billion yuan (about 6.4 billion US dollars) in 2015.

"The sad truth is that only around 20 firms have practical experience and less than 10 are really competent. That's why we need clear rules and legal grounding," said Gao Shengda, general secretary of China Environmental Remediation Industry Alliance.

Highlights
Hot Topics
...
久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

    在线亚洲一区观看| 91精品国产综合久久福利软件| 亚洲猫色日本管| 91精品福利在线| 日韩国产高清影视| 精品国产凹凸成av人导航| 丁香婷婷综合激情五月色| 亚洲毛片av在线| 欧美军同video69gay| 久久成人精品无人区| 国产欧美一区二区精品婷婷 | 不卡视频在线看| 亚洲一级片在线观看| 日韩精品一区二区三区在线播放 | 国产一区二区h| 亚洲欧美另类综合偷拍| 正在播放一区二区| 国内外精品视频| 亚洲欧美怡红院| 在线播放一区二区三区| 国产成人在线免费观看| 一区二区三区高清在线| 精品免费一区二区三区| 97精品超碰一区二区三区| 日本午夜一区二区| 国产精品久久免费看| 91麻豆精品国产无毒不卡在线观看| 国产一区免费电影| 亚洲一区二区影院| 国产午夜亚洲精品不卡| 欧美午夜一区二区三区 | 欧美视频自拍偷拍| 激情久久五月天| 一级女性全黄久久生活片免费| 欧美www视频| 色天使色偷偷av一区二区| 另类调教123区| 亚洲嫩草精品久久| 久久综合九色欧美综合狠狠| 91碰在线视频| 国产一区二区不卡| 五月婷婷激情综合| 国产精品白丝在线| 精品国产免费久久| 欧美日韩美女一区二区| 成人性生交大片免费看中文网站| 婷婷成人综合网| 成人免费视频在线观看| 日韩一区二区免费电影| 日本国产一区二区| 国产69精品久久久久毛片| 丝袜美腿亚洲色图| 亚洲人成伊人成综合网小说| 26uuu国产一区二区三区| 欧美日韩视频在线第一区 | 爽好多水快深点欧美视频| 中文字幕免费不卡在线| 日韩欧美中文字幕制服| 在线亚洲+欧美+日本专区| 国产精品一区二区在线看| 日韩成人免费电影| 亚洲午夜私人影院| 中文字幕永久在线不卡| 久久丝袜美腿综合| 日韩精品一区二区三区三区免费| 日本福利一区二区| av一区二区三区黑人| 国产一区二区三区久久久| 天涯成人国产亚洲精品一区av| 综合色天天鬼久久鬼色| 国产欧美一区二区精品久导航| 日韩精品一区二区三区在线播放| 欧美日韩综合在线| 91蝌蚪国产九色| 成人av在线网站| 国产成人在线视频免费播放| 久久不见久久见中文字幕免费| 日韩中文字幕1| 亚洲高清免费一级二级三级| 亚洲激情图片qvod| 国产精品国产三级国产普通话蜜臀 | 国产一区二区三区四区五区美女 | 日韩三级免费观看| 7777精品伊人久久久大香线蕉 | 中文字幕五月欧美| 国产精品人人做人人爽人人添| 精品对白一区国产伦| 欧美va亚洲va| 日韩一区二区三区四区五区六区| 欧美日韩精品一区二区三区蜜桃| 91国偷自产一区二区三区观看 | 91成人在线免费观看| 91女神在线视频| av资源网一区| 99久久精品免费精品国产| 成人性生交大片免费看视频在线 | 91精品国产丝袜白色高跟鞋| 欧美日韩国产区一| 欧美日韩国产另类一区| 欧美精品在线视频| 91 com成人网| 欧美一级国产精品| 日韩女优视频免费观看| 欧美成人精精品一区二区频| 2024国产精品| 国产欧美精品一区| 中文字幕一区三区| 亚洲激情综合网| 午夜国产精品影院在线观看| 日韩高清一级片| 捆绑紧缚一区二区三区视频| 精品一区精品二区高清| 国产福利精品一区| 99视频一区二区| 在线观看亚洲精品| 欧美理论电影在线| 精品免费视频一区二区| 国产亚洲一二三区| 专区另类欧美日韩| 亚洲国产精品影院| 奇米精品一区二区三区在线观看一| 久久精品国产澳门| 国产999精品久久久久久| 97久久精品人人爽人人爽蜜臀| 91国偷自产一区二区三区成为亚洲经典| 在线视频国内自拍亚洲视频| 欧美日韩卡一卡二| 亚洲精品一区二区三区99| 欧美激情中文字幕一区二区| 自拍偷拍国产精品| 图片区日韩欧美亚洲| 另类欧美日韩国产在线| 丁香网亚洲国际| 欧美亚洲国产一区二区三区| 日韩一区二区三区在线| 国产三级精品视频| 一区二区三区日韩欧美精品| 免费在线看成人av| 国产91精品在线观看| 欧美综合亚洲图片综合区| 日韩免费成人网| 国产精品色婷婷久久58| 亚洲成人精品一区二区| 久草中文综合在线| 93久久精品日日躁夜夜躁欧美| 91麻豆精品久久久久蜜臀| 国产亚洲欧美中文| 亚洲综合清纯丝袜自拍| 激情偷乱视频一区二区三区| 北岛玲一区二区三区四区| 欧美日韩免费高清一区色橹橹| 欧美成人a视频| 亚洲伦理在线免费看| 欧美aaaaa成人免费观看视频| 风间由美中文字幕在线看视频国产欧美| 色婷婷av一区二区三区gif | 欧美成人aa大片| 亚洲欧美日韩国产另类专区| 美女一区二区久久| 色综合一区二区| 日韩欧美黄色影院| 亚洲伦理在线免费看| 国产一区二区福利| 欧美图片一区二区三区| 国产日韩欧美在线一区| 午夜电影一区二区三区| 成人激情视频网站| 91麻豆精品国产91久久久久久久久 | 国产精品久久久久永久免费观看| 亚洲bt欧美bt精品777| 丁香一区二区三区| 欧美一卡在线观看| 亚洲精品一二三| 国产成人精品免费网站| 在线播放日韩导航| 亚洲欧美日韩小说| 国产成人免费9x9x人网站视频| 欧美日韩久久不卡| 亚洲人成伊人成综合网小说| 国产乱码精品一品二品| 91精品免费在线观看| 亚洲美腿欧美偷拍| 成人性生交大合| 欧美精品一区二区蜜臀亚洲| 香蕉成人啪国产精品视频综合网| 北岛玲一区二区三区四区| 久久综合九色综合欧美就去吻| 舔着乳尖日韩一区| 欧洲人成人精品| 自拍偷拍国产亚洲| 国产aⅴ精品一区二区三区色成熟| 69堂亚洲精品首页| 一区二区高清免费观看影视大全 | 五月开心婷婷久久| 色综合天天天天做夜夜夜夜做| 久久久久国产精品人| 捆绑紧缚一区二区三区视频| 欧美日韩国产影片| 一区二区三区在线观看欧美 | 欧美岛国在线观看|