Yangtze River sturgeon escape investigation and report form for eco-effect argument | sturgeon | | escape _ in Yangtze River Valley News

Original title: Yangtze River sturgeon escape incident investigation report form

With a major flood this summer, nearly a million tons of artificial cages of sturgeon were dispersed to the middle and lower reaches of the Yangtze River waters, or escape, or die.

Two months ago the event at which the waters of Qingjiang River, a tributary of the Yangtze River, recently raised concern. The sturgeon in the Yangtze River ecological impact? And how to remedy it? Damage to local farmers and eco-environment behind or affected, Qingjiang, reflecting development of cage culture and how regulatory dilemma?

On September 22, ? green online reporter of China Youth daily from the Yangtze River fishery resource management Committee was informed that, after the incident, the Ministry of agriculture, Ministry of water resources and other ministries, and the local Government has organized in the early group of experts involved in the investigation. At present, the investigation report had been formed, conclusion and remedial measures need to be further discussion.

Nearly tons of farmed sturgeon are dispersed

Many farmers told reporters, in the tributaries of the Yangtze River, Hubei Qingjiang geheyan hydropower station waters with the gaobazhou hydropower station, from the afternoon of July 19 to the incident the next day.

Shen Tao (respondents requested a pseudonym) is a large local farming, cage culture of sturgeons in the waters for more than 10 years. According to Shen Tao introduction, in this case, his company's culture more than 300,000 pounds of sturgeon are being washed away.

"More than 10 years have not encountered such a thing. "Shen Tao recalls that day 14 o'clock, upstream isn't growing, cage began to be dispersed in the Qingjiang River. Subsequently, farmers received a discharge notice from the local fishery Department messages.

Farmers provided by 15:49 on July 19, according to the message received: "currently, geheyan, gaobazhou dam being flood, flood control and notifications, gaobazhou overflow discharge up to 4300 (cubic meters per second--the reporter), the fishermen's safety and ensure the safety of persons and property. ”

Other 16:15 according to the message received: "urgent notice, geheyan spillway to 8800 (cubic meters per second--the reporter), cage personnel quickly evacuated, to ensure people's safety. "The publishing unit is displayed as" aquatic products Bureau, yidu ".

"But at that time, cage rescue too late, can only watch which had been tied together in cages were dispersed, have been raising for a few years, dozens of pounds, one hundred or two hundred pounds of sturgeon escape around. "Shen Tao said.

Shen Tao with his producers Arthur c. Yap (respondents requested a pseudonym) are described, sturgeon fish escapes include the Siberian sturgeon, Acipenser schrenckii, epizootic of sturgeon and other exotic sturgeon, as well as hybrid sturgeon varieties.

Farmers shot video of the incident the next day. Video display, after the flood, is located on the river farms, cages were scattered, a mess.

Farmers made a preliminary statistics, the release cage up to more than 28,000 in was washed away, and involves both yidu, Changyang farmers a total of 366. According to reports, these cages, sturgeon account for most of the preliminary estimates nearly tons.

　Ecological impacts need further demonstration

After the incident, media, middle and lower reaches of the Yangtze River sudden large sturgeon.

On July 21, said in Hubei Chu network, from July 19 to 20th, yidu, Hubei the rain was heavy, a lot of Qingjiang River sturgeon were washed down, to the river picked up fish among the crowds downtown "was selling sturgeon." Distribution map of the sturgeon, about 1 meter in length, some have been injured.

Media also reported in Hunan province, since late August, located in waters in Jiujiang section of the Yangtze River, Poyang Lake waters in duchang and Hukou and pengze, Yongxiu, Wu received the fishermen find sturgeon's case up to more than 10. After appraisal, the sturgeon are not wild Chinese sturgeon, sturgeon in captivity. Local water Department staff, and Qingjiang cascade hydropower station spillway, a host of foreign related to sturgeon, sturgeon escape hybrid.

The sturgeons into the Yangtze River waters on ecological implications? At present, the experts have a different view.

According to surging News reported, China aquatic Science Institute Yangtze River aquatic Institute researcher, and Ministry of agriculture freshwater biological diversity protection focus laboratory director dangerous up Wei in by visit Shi said, these artificial farming of sturgeon into middle and lower reaches of waters Hou, will preemption original fish in ecological environment in the of location, that ecological bit; while, may and Chinese sturgeon, hybrid, brings gene pollution, led to purebred Chinese sturgeon difficult find.

Group of Chinese sturgeon Research Institute, Deputy Director of the three gorges, China Yang Yuanjin told China Youth Daily: China Youth online reporters, sturgeon are bottom fish escape, usually on bottom shellfish, snails, algae for food, but the middle and lower reaches of the Yangtze river silt sediment, serious shortage of suitable for eating in the sturgeon bait, these sturgeon even lucky enough to survive, it is difficult to mature.

Yang Yuanjin describes, there are currently 9 species of sturgeon, Acipenser sinensis breeding in the fall, several other sturgeon breed in the spring, "so, escaping the possibility of hybridization between sturgeon and sturgeon are also very small."

However, fishermen are introduced, this was washed away in cages, and farmed California sea bass, herring, and other fish. "These fish into the other water bodies, will have an impact on ecology, fish genes. "Yang Yuanjin said.

22nd, head of the Yangtze River fishery resources management Committee Office said, at present, escape sturgeon on ecological issues such as the impact of the further argument, will form the final version of the investigation report.

　Cage culture in Qing Jiang Road of prosperity to the reorganization

Originated from lichuan of Hubei Qingjiang River, is the largest tributary of the upper and middle reaches of the Yangtze River in Hubei Province, for "the color of clear 10 feet, people see its clear" name, flows through Icheon, Changyang, 7 counties such as yidu city, yidu Lu Cheng ren min into the Yangtze River.

Many farmers to introduce, in the development of cage culture on the Qingjiang River, began in the 90 's, involved in Changyang County, Yichang city and Enshi, yidu area. Among them, the gaobazhou hydropower station because of geheyan hydropower station and the waters between clear water, water temperature, and around 2005, started farming sturgeon.

? Qing of China Youth Daily Online Xinhua obtained a copy from Yichang City Bureau of agriculture in June this year, the agricultural environmental protection report shows that at the end of the city, "actively encourages the development of cages in the reservoir area", an excellent environment to cultivate the Qingjiang River fish, fatty fish of the Yangtze River and other quality brands, and made positive contributions to the peasants.

But it is also because of the considerable benefits, led to cage "sprawl, which development, aquaculture water caused some pollution." The report shows that Yichang municipal clear environmental priorities, determined to start cage rectifications.

Also in June this year, a report from the official, yidu, cage cleaning, the ban showed, as of June, statistics, cage culture in the city involving 555 households, farming area of more than 650,000 square meters of Qingjiang River, cleanup is under way.

According to the Hubei daily reported, starting in 2014, starting in Enshi autonomous prefecture of Qingjiang rectification, the abolition of net cage rearing operations. In future, the State's major river, River, reservoir, will achieve fisheries River back into the pond.

Yang Yuanjin said, because it involves fish drug residues, solid waste issues, relevant departments of the Government limited the power management, in recent years, large-scale development of Qingjiang cage, destroyed the water environment to a certain extent, the sturgeon escape behind the event, also reflects the intensive farming of urgent questions relating to departmental Science planning guide.

Staff writer, Wuhan, September 22-

? Youth of China Youth Daily Online Xinhua Zhu Juan Juan

Responsible editor: Wu Yan

Article keywords:
Sturgeons in the Yangtze River basin to escape investigation report

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长江鲟鱼逃逸前期调查报告形成 生态影响需论证|鲟鱼|长江流域|逃逸_新闻资讯

　　原标题：长江流域鲟鱼逃逸事件前期调查报告已形成

　　伴随一场大洪水，这个夏天，近万吨人工网箱养殖的鲟鱼被冲散至长江中下游水域，或逃逸，或死亡。

　　两个月前发生在长江支流清江水域的这一事件，近日持续引发关注。这些鲟鱼会对长江生态带来什么影响？又该如何补救？当地养殖户受损与生态环境或受影响的背后，折射出清江网箱养殖发展与监管怎样的困境？

　　9月22日，中国青年报·中青在线记者从长江渔业资源管理委员会办公室获悉，事发后，农业部、水利部等多个部委，以及地方政府前期已组织专家组介入调查。目前，前期调查报告已形成，相关结论及补救措施有待进一步研讨。

　　近万吨人工养殖鲟鱼被冲散

　　多名养殖户向记者证实，事发地位于湖北长江支流清江隔河岩水电站与高坝洲水电站之间水域，事发时间为7月19日下午至次日。

　　沈涛（应受访人要求化名）是当地一名养殖大户，已在该水域网箱养殖鲟鱼10余年。据沈涛介绍，此次事件中，他所在公司养殖的30多万斤鲟鱼均被冲走。

　　“10多年没有遇到过这样的事。”沈涛回忆，当天14时许，上游来的水势越来越大，清江中开始有网箱被冲散。随后，养殖户们接到了当地水产部门发来的泄洪通知短信。

　　养殖户们提供的于7月19日15时49分收到的短信显示：“目前，隔河岩、高坝洲两坝正在泄洪，接防汛办通知，高坝洲泄洪量现增加到4300（立方米每秒——记者注），请广大渔民做好安全防范，确保人身和财产安全。”

　　另一则16时15分收到的短信显示：“紧急通知，隔河岩泄洪量将达8800（立方米每秒——记者注），请网箱上人员迅速撤离，确保人身安全。”发布单位均显示为“宜都市水产局”。

　　“但那时候，网箱抢救已来不及了，只能眼看着原本被绑在一起的网箱被冲散，已经养了几年，几十斤、一两百斤重的鲟鱼四处逃逸。”沈涛说。

　　沈涛与另一名养殖户严辉（应受访人要求化名）均介绍，逃逸的鲟鱼群包括西伯利亚鲟、史氏鲟、达乌尔鳇等外来鲟鱼，还有杂交鲟，种类繁多。

　　有养殖户拍摄了事发次日的视频。视频显示，洪水过后，位于江面的养殖场上，网箱四散，一片狼藉。

　　养殖户们作了初步统计，此次泄洪，被冲走的网箱达2.8万多口，涉及宜都、长阳两地养殖户共366户。据介绍，这些网箱中，鲟鱼养殖占了绝大部分，初步测算近万吨。

　　生态影响需进一步论证

　　事发后，多地媒体报道，长江中下游突然出现大量鲟鱼。

　　7月21日，湖北大楚网网友称，从7月19日中午到20日早上，湖北宜都降雨量很大，清江河出现很多被冲下来的鲟鱼，群众纷纷到河边捡鱼，城区“到处是卖鲟鱼的”。配图显示，这些鲟鱼体长1米左右，有的已受伤。

　　湖南媒体亦报道，8月下旬以来，地处长江水域九江段、鄱阳湖水域的都昌、湖口、彭泽、永修、九江五地接到渔民发现鲟鱼的案例多达十几起。经 鉴定，这些鲟鱼均非野生中华鲟，而是人工饲养鲟鱼。当地水科所工作人员表示，或与清江梯级电站泄洪，大量外来鲟鱼、杂交鲟鱼逃逸有关。

　　这些鲟鱼进入长江中下游水域对生态将带来哪些影响？目前，专家们对此持不同看法。

　　据澎湃新闻报道，中国水产科学研究院长江水产研究所研究员、农业部淡水生物多样性保护重点实验室主任危起伟在受访时表示，这些人工养殖的鲟 鱼进入中下游水域后，将抢占原有鱼群在生态环境中的位置，即生态位；同时，可能与中华鲟等杂交，带来基因污染，导致纯种中华鲟难觅。

　　中国三峡集团中华鲟研究所副所长杨元金在接受中国青年报·中青在线记者采访时表示，逃逸的鲟鱼属于底层鱼，一般以底层贝类、螺蛳、藻类为饵料，但长江中下游基本为泥沙底质，适合这些鲟鱼食用的饵料严重不足，这些鲟鱼即使侥幸存活，也很难成熟。

　　杨元金介绍，目前国内的9种鲟鱼中，中华鲟在秋季繁殖，其他几种鲟鱼均在春季繁殖，“因此，逃逸的鲟鱼与中华鲟杂交的可能性也很小”。

　　不过，有渔民介绍，此次被冲毁的网箱中，还有人工养殖的加州鲈、青鱼等其他鱼类。“这些鱼类进入其他水体，会对生态、相应鱼类基因造成影响。”杨元金说。

　　22日下午，长江渔业资源管理委员会办公室相关负责人表示，目前，逃逸鲟鱼对生态的影响等问题尚在进一步论证中，届时将形成最终版的调查报告。

　　清江网箱养殖 从兴盛到整顿之路

　　发源于湖北恩施土家族苗族自治州利川市的清江，是湖北省境内长江上中游最大的支流，因“水色清明十丈，人见其清澄”而名，流经利川、长阳、宜都等7个县市，在宜都陆城汇入长江。

　　多名养殖户介绍，在清江上发展网箱养殖，始于上世纪90年代，涉及恩施和宜昌市长阳、宜都等辖区。其中，由于隔河岩水电站与高坝洲水电站之间水域水质清澈，水温适宜，2005年左右，此地开始大规模养殖鲟鱼。

　　中国青年报·中青在线记者获得的一份来自宜昌市农业局今年6月的农业环保工作汇报显示，上世纪末，该市“积极鼓励发展库区网箱养殖”，优良的环境培育出了清江鱼、长江肥鱼等优质品牌，为农民增收致富做出了积极贡献。

　　但也正是由于效益可观，导致网箱养殖“无序发展、滥发展，给养殖水域水质造成了一定污染”。该汇报显示，宜昌市委市政府明确提出，环保优先，坚决启动网箱养殖清理整顿工作。

　　同样是今年6月，一份来自宜都市官方的该市网箱清理取缔工作情况显示，截至6月，统计发现，该市网箱养殖涉及555户，其中清江河养殖面积65万余平方米，清理工作正在进行。

　　据湖北日报报道，恩施州亦于2014年起启动清江专项整治，全面取缔网箱养育行动。今后，该州重要江面、河面、水库，都将实现渔业退河入塘。

　　杨元金亦表示，由于涉及鱼药残留、生活垃圾等问题，政府有关部门规范管理力量有限，近年清江大规模发展网箱养殖，一定程度上破坏了水体环境，此次鲟鱼逃逸事件背后，亦折射出规模化养殖亟待有关部门科学规划引导的问题。

　　本报武汉9月22日电

　　中国青年报·中青在线记者 朱娟娟

责任编辑：吴颜

文章关键词：
鲟鱼 长江流域 逃逸 调查报告

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