The hottest layer upon layer blocked and cut off t

2022-08-21
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There is only "half life" left in intercepting the Liaohe River layer by layer

the midstream has been cut off for 20 years, and the river course is full of yellow sand

Liaohe River, as one of the seventh largest rivers in China, spans Hebei, Inner Mongolia, Jilin and Liaoning provinces, with a total length of 1345 kilometers. In Pingquan City, Hebei Province, Chifeng City and Tongliao City, Inner Mongolia Autonomous Region, local people affectionately call the Liao River "Mother River". However, in recent years, the "Mother River" has lost its charm of "abundant water and beautiful scenery" in that year. The water volume of the river has decreased year by year, and many places have been cut off

in guangtou mountain, Liuxi Town, Pingquan City, Hebei Province, a large stone engraved with the words "the source of the Liao River" is particularly prominent. The economic information daily visited the source of Liaohe River in February and may this year. There were dense trees and beautiful environment around, but no running water was found at the source. Wang Guoqiang, deputy director of the Pingquan Water Resources Bureau, said, "during this period, the Liaohe River is in a dry season. When the rain is abundant, there will be water at the source of the Liaohe River. However, in recent years, the water volume of the Liaohe River is gradually decreasing."

Liaohe River mainly flows through Chifeng City and Tongliao City in Inner Mongolia, with a total length of 829 kilometers. In this section of the basin, the water flow of Liaohe River is even less. In Chifeng City, there is not a drop of water in the Laoha River in the upper reaches of the Liaohe River except for a little water at the entrance of Mongolia and Hebei and Yuanbao mountain area. Li Jun, President of Chifeng water conservancy planning and Design Institute, said, "Liaohe River enters dianzi Town, Ningcheng county. Most of the rivers have been cut off since 2007, with an average of 311 days per year." In the West Liaohe River, located in the middle reaches of the Liaohe River in Tongliao City, there has been a 20-year cutoff phenomenon, and the river is full of yellow sand. Guanchangshan, deputy director of Tongliao Water Affairs Bureau, said, "the Xiliao River has been cut off since 1998."

then came to Fudian, Changtu County, Tieling City, Liaoning Province, the dividing line of the middle and lower reaches of the Liaohe River. After the intersection of the West Liaohe River and the East Liaohe River in the middle reaches of the Liaohe River, they entered the territory of the lower reaches of Liaoning Province. We can see that there is a certain flow of water in the Dongliao River, and there is also some water in the West Liao River, but it does not flow. Yang Zongyuan, deputy director of the East-West Liaohe River embankment management institute in kezuohou banner, Tongliao City, said that the main source of water in the lower reaches of the Liaohe River is the East Liaohe River, which now has only "half a life". He said that in nearly half a month, the average flow of the East Liaohe River was 12 cubic meters per second. Although the West Liaohe River had water, the flow was zero. According to further investigation, the water of this section of Xiliao River comes from the nearby tributaries wulijimuren River, Tangni River and dongdahuang irrigation area of Kezuo rear banner

According to the interview of economic information daily, the main reason for the cutoff of the middle and upper reaches of the Liaohe River is that there are too many impounding projects, except for the climate drought, and the main purpose of the impounding projects is to use the river water. However, in the middle and upper reaches of Liaohe River, the utilization of river water has reached the point of overdraft

according to the interview, in Chifeng, there are 82 large, medium and small reservoirs jointly built by Laoha River and Xilamulun River, two rivers in the upper reaches of Liaohe River. Most of these reservoirs are used for irrigation and industrial water. Among them, Hongshan reservoir is the largest reservoir on Laoha River, with a capacity of 2.56 billion cubic meters, which has played a great role in the optimal allocation of water resources in the middle and upper reaches of Liaohe River. In recent years, with the continuous construction of detention projects in the upstream, the water storage capacity of Hongshan reservoir has decreased year by year. At present, only 50million cubic meters of water is stored, reaching the dead water level of the reservoir area. Hada Chaolu, deputy director of Hongshan Reservoir Authority, said: "since 2006, Hongshan reservoir has not discharged water to the downstream, resulting in the complete blocking of Laoha River, one of the main water sources of the downstream Xiliao River."

the situation of Xilamulun River, another water supply source of Xiliao River rather than the panel itself, is not ideal. Only in the upstream Chifeng City, there are 28 large and small detention reservoirs, resulting in the cutoff of the downstream Tongliao river section for most of the year. At present, Tongliao City has jointly built five large reservoirs on the Xiliao River and Xilamulun River to realize the transformation and development of equipment, four of which are dry, and only the Mengjia Section Reservoir on the Xilamulun River still has more than 20 million cubic meters of water. According to Yan Jiming, deputy director of Tongliao Xiliao River Project Management Office, only about 100million cubic meters of flood entering the Xilamulun River during the spring flood season each year enters the Mengjia section reservoir, and the rest of the time is in the following state

although the Xilamulun river has been nearly cut off throughout the year, the interview learned that the construction of the Linxi dongtaizi reservoir project in Chifeng City is still under preparation. The development of the project focuses on flood control and water supply, with a reservoir capacity of 322 million cubic meters and a beneficial reservoir capacity of 107 million cubic meters, of which the ecological regulation reservoir capacity is 73 million cubic meters, and the rest also includes direct water supply to the Linxi Industrial Park and compensation for downstream agricultural irrigation water

there are different voices about the construction of reservoirs under the current river ecological conditions. Chifeng City welcomed it, while some cadres and masses in Tongliao City opposed it. Wangtengfei, director of mengjiaduan reservoir, said that in the past 20 years, the water coming from the middle reaches of Liaohe River mainly depends on the Xilamulun River, but after the completion of dongtaizi reservoir, the interception volume of Xilamulun river has been increased, and whether there will be water coming from the downstream in the future is a problem. If the Xilamulun river is also stopped, Tongliao City will have no "foreign water" supply

groundwater overexploitation forms "three funnels" settlement area

over the years, with the cutoff of the middle and upper reaches of the Liaohe River and the increase of people's production and domestic water, Tongliao City, Chifeng City and other places have an increasing demand for groundwater, resulting in groundwater overexploitation, water level decline, and the formation of "three funnels" settlement area

according to the water conservancy departments of the two cities, these "three funnel" areas are the groundwater overexploitation area in Horqin district, Tongliao City, the small pore shallow groundwater overexploitation area in Hongshan District, Chifeng City, and the small pore shallow groundwater overexploitation area in Yuanbaoshan District. Among them, the groundwater overexploitation area in Horqin district of Tongliao City covers 3056.4 square kilometers, and the water level drops by about 10 meters; The small pore shallow groundwater overdraft area in Hongshan District of Chifeng City covers an area of 68.9 square kilometers, and the water level drops by about 7 meters; The small pore shallow groundwater overdraft area in Yuanbaoshan District covers an area of 169.6 square kilometers, and the water level drops by about 8 meters

it is reported that among the "three funnel" areas, the groundwater overexploitation area in Horqin district, Tongliao City and the small pore shallow groundwater overexploitation area in Hongshan District are mainly caused by agricultural water. Zhangyuqing, President of Tongliao water conservancy planning and Design Institute, said that Tongliao's agricultural water consumption accounted for more than 82% of the total water consumption, and the annual water consumption for agricultural irrigation reached 2.4 billion cubic meters, with an average over extraction of 200million cubic meters for many years. Li Jun, President of Chifeng water conservancy planning and Design Institute, said that Chifeng agriculture is the main water user. 80% of the city's water is used for agricultural irrigation. The annual water consumption for agricultural irrigation is 1.172 billion cubic meters, and the groundwater overexploitation is 3.9 million cubic meters

the small pore shallow groundwater overexploitation area in Yuanbaoshan District is mainly caused by the drainage of drainage water in Yuanbaoshan open pit coal mine. In an interview with Yuanbaoshan open pit coal mine, it was found that the electromechanical shaft houses can be seen everywhere outside the coal mine, and the sound of drainage rises one after another. Wang Yong, chief engineer of Yuanbaoshan open pit coal mine, said that Yuanbaoshan open pit coal mine has been draining since 1990. At most, there are more than 70 wells in the coal mine, and the daily drainage volume is more than 100000 tons. There are still more than 40 wells draining more than 30000 tons of water every day. It is understood that the drainage of open-pit coal mines in Yuanbaoshan District has led to the decline of groundwater level and groundwater overexploitation, with an average overexploitation of 10.58 million cubic meters over the years

most poplars are "bald" and their ecological security is worried.

the interview learned that the cutoff of the middle and upper reaches of the Liaohe River has caused a significant reduction in the area of lakes, wetlands and grasslands in the basin, and some trees on both sides of the river decline and die, posing a threat to the ecological environment and ecological security of this region

according to the information provided by Tongliao Water Affairs Bureau, since 1998, the wetlands of the Liaohe River Basin in Tongliao City, including Laoha River, Jiaolai River, Xiliao River, Xinkai River, Qinghe River and Honghe River, have all been cut off for nearly 20 consecutive years. Among the five reservoirs in the reservoir pond wetland, namely, Molimiao, talagan, selihu, turji mountain and Mengjia section, four reservoirs have been dried up for nearly 16 years. Only Mengjia section has about 2000 cubic meters of inventory water, the other eight small and medium-sized reservoirs have been dried up, and nearly 300000 mu of marshes and marshy meadow wetlands have been desertification. According to the survey data of land change in Tongliao City, the grassland area of the city was at the end of 2014, 2015 and 2016 respectively 47 hectares 10 hectares and 44 hectares, decreasing year by year

it can be seen that the Molimiao reservoir in Tongliao City, the largest desert reservoir in Asia, has been dry for nearly 20 years. The reservoir is filled with yellow sand, and motorcycles pass through it difficultly. The West Lake in Naiman Banner, Tongliao City was once a "Pearl" in Horqin sandy land. However, this once abundant lake dried up completely in 2000. Wang Jianping, director of the West Lake Reservoir Management Institute, said, "the West Lake is a naturally formed Lake in the Jiaolai River Basin, a tributary of the West Liaohe River. It has a total area of 40000 Mu and a reservoir capacity of 50million cubic meters. The lake has been dry for nearly 20 years. We are still looking forward to the West Lake one day."

the same situation also exists in Chifeng City. In 2004, the area of Lake Wetlands in Chifeng City was 60738.05 hectares, and in 2010, the area of lake wetlands decreased to 3. The annual operating income of the new material industry reached more than 10 billion 1392.55 hectares. Nearly 40% of the 82 reservoirs in Chifeng City have dried up

the water cut-off of Liaohe River also brings crisis to forestry ecology. On the way from Naiman Banner in Tongliao City to Aohan banner in Chifeng City, I saw that most poplar trees were "bald", and only dry branches were left on the top. After asking the local forestry department, we learned that when the Xiliao River had water, the shallowest water in these areas was about 1 meter deep, and the roots of trees grew flat, and the main root layer was about 1 meter. As soon as the river stopped flowing, the water burial fell to less than 4 meters now. In addition, the precipitation decreased, and the trees could not get enough water, so they began to dry up from the top until the whole tree died

it is reported that more than 2 million mu of trees in Tongliao City were affected to varying degrees before 2010, especially the decline and death of some trees along the two banks of the river, and the Dwarfing and slow growth of other areas. Before 2015, 5.5 million mu of trees in Chifeng City were affected to varying degrees, including 2million mu of moderately and severely degraded trees

worried that the water quality exceeded the standard, the reclaimed water did not dare to discharge into the cut-off River

this time, starting from the source of the Liaohe River in guangtoushan, Qilaotu mountain, Pingquan City, Hebei Province, we interviewed all the way along the Laoha River and Xiliao River in the middle and upper reaches of the Liaohe River to Fudian, Changtu County, Tieling City, Liaoning Province, the junction of the middle and lower reaches of the Liaohe River. We found that all places along the way paid more attention to water pollution than to the cut-off

Copyright © 2011 JIN SHI