Datong To The Original High-speed Railway Construction In Shanxi Sanggan River Nature Reserve, Ecological Effects And Countermeasures Research

Taking datong to the original passenger dedicated line construction project (hereinafter referred to as "a primary designed") in this paper through the sanggan river nature reserve construction in Shanxi Province as an example, combined with exploratory and research perspective, through the study of the quadrat investigation, survey key protected animals, in mastering the actual situation of study area, combining with the main focus of the research region, quantity and distribution of wild animal protection type. From the perspective of the study area ecosystem integrity and coordination, primary research on the feasibility of the project through the reserve, according to the result of impact prediction environmental protection countermeasures are put forward. For the future high speed railway crossing nature reserve construction to provide theoretical and practical basis, the feasibility of the cause of "much starker choices-and graver consequences-in" during the rapid development of high speed railway and the construction of ecological civilization has important practical significance.Impact on the ecological environment, and the main research results are as follows:Big original road passenger dedicated line in the form of a bridge across the study area, length of about 344 m, a total 11 piers. All piers to the destruction of the land covers an area of the vegetation, including Canada, Yang 18, populus simonii 4 tree; Understory shrubs mainly scattered, caragana korshinskii trifid meadow sweet, yellow dahurian rose fruit, etc., no piece of the distribution of bushes; Long grasses mainly diehard artemisia, miscanthus, a. annua, green bristlegrass, committee ling, hispid arthraxon primarily.18 tree Canada Yang Jun artificial planting in the fifties and sixties of the last century, population,80% of the total coverage tree layer canopy density of 0.7, diameter at breast height about 9-12 cm, little shrub layer. Herb layer coverage of 60-70%. Dominant species hardcore artemisia, long miscanthus average 30 to 50 cm high, coverage of 50%, is associated with a. annua, green bristlegrass, appoint ling, hispid arthraxon, etc.Big original road passenger dedicated line construction temporary covers including sedimentation pond, drill slag yard, construction, materials, temporary storage area, covers an area of 1321.98 m2, including:sedimentation pool covers an area of 68.75 m2, total drilling slag yard, covers an area of 385.0 m2 construction zone covers an area of 593.23 m2, total material temporary storage area, covers an area of 275.00 m2.Ecological environment protection countermeasures in terms of the main research results are as follows:Big original road passenger dedicated line during the construction of ecological protection countermeasures:civilization construction, scientific management, completes the propaganda work; Arrange reasonable construction area and time limit, as far as possible within the scope specified; Promote science construction, minimize deforestation pier covers an area of poplar; Strictly control the construction scope and shall not be arbitrarily expanding the scope of the construction, shall not be arbitrarily trample belt construction work outside of the vegetation; Construction machinery was idle, parked in the range of the construction work take not literally park, rolling belt construction work outside of the vegetation; Drill slag yard, temporary construction, material yard and other small temporary construction works, if there are trees, do not cut down, need to be included, try not to destroy the bark in the construction process, and after being finished, clean up the earth's surface, to restore the original landform; Sedimentation pool, drilling slag yard, temporary construction, material yard and other small temporary construction engineering, construction is completed, clean up the earth's surface, flat land, sowing seed for vegetation greening; Strengthen the wild animal protection law propaganda work, prevent vicious incidents hunted wild animals.Ecological protection countermeasures:big primary designed operation periods when completed as soon as possible to restore the vegetation, the temporary construction area planting grass, in order to reduce soil loss; During operation in order to avoid the drive train and honking noise may impact on wildlife, in setting the forbidden singing in the study area road signs, try not to horns; Mainly around the bridge pier habitat monitoring during operation, animal activity and the change of ecosystem integrity.Big original temporary passenger dedicated line road engineering vegetation restoration measures:11 permanent study area around the bridge pier of sedimentation pond, drilling slag yard, temporary construction, material yard and other small temporary construction engineering, construction is completed, clean up the earth's surface, digging, leveling, artificial measures to restore vegetation. With the method of sowing seed recovery for the grass. Temporary works, covers an area of 1321.98 m2, arable land and river water (yongfeng main canal) without vegetation restoration, the remaining 1041.32 m2 occupied forestland and other fields, and a need for vegetation restoration. According to the needs of the amount of 30 kg/hm2, replanting coefficient of 1.2, a total of about 4 kg seed.Proposed railway crossing the road in the study area of ecological protection investment estimation is 829000 yuan, accounting for 0.01% of the total project investment.