Rearch And Assessment Of The Reginal Eco-geo-environment In The Southern Anshan

The southern part of Anshan is the significant area in mineral resources distribution, staple crops and fruit cultivation, also with the famous tourism resources. But affected by exploitation of mineral resources, industrial discharge and over-cultivation, the environment is worsening. It is a surviving issue related to future generations for us to protect the eo-geo-environment and keep the local economy sustainable development during expending economy.By means of 3S technologies and a lage number of field investigation, samples collection and test, argo-eco-geological environment and geological disasters environment of the southern part of Anshan, eco-geo-environment of qianshan scenic area were studied and assessed.The investigation and research of argo-eco-geological environment in the southern Anshan the first time showed the soil status was quite good, the content of N, P, K, oganic matter and some elements that plants need were rich or general level. The reginal eco-geo-environment was better to be suitable for staple crops planting and fruit cultivation. The district was divided into ten areas and the planting and fertilizing suggestion was given to each on the base of the total and available contents of elements. The investigation of soil environment also indicated that the contents of the heavy metal elements, such as Hg, Pb, As, were higher than anormal values, Hg in particular. The distribution was accordance with the densely populated areas or industries where. They also occured in the northern part together and may be from the iron mines nearby. Finally the assessment map of the environment quanlity was made up and the heavy contaminated, contaminated, light contaminated, Non-contaminated areas were given out, planting suggestion also provided.The research result of the geological background Nangou pear growing evinced that the rich contents of elements and nutrition plants needed in the area was the necessary condition for nanguo pear growing. Its unique quality was deponded on the K, Fe, Mg, Ca, Co, Mn, good nature contion and the local heigh heat flow value. The area division of nanguo pear planting was done in four levels zones.The eco-geochemical features of rare elements (Ree) in Nanguo pear growing system were studied for the first time. The results showed that the light Rees fractionation was much better than heavy ones from its growing soil to every part of the tree and the content was (big to small) in the range of soil-leaves-branch-fruit. The fruit as food was safety according to GB14935-94. By means of increasing the oganic matter in soil could bring into play the Rees fertilization and improve quality of nanguo pear.It was found there were many kinds of the geological hazards in southern Anshan, such as collaps, slope, debris flow, ground subsidence, unstable slopes, by the systemic investigation and research. The geological hazards were well-developed in southeastern of the working area, but could be seen hardly in northwest plain area. The reasons included in the well-developed structure, mineral mine exploitation, excessive farming, vegetation damage, others were mountain and hills area, rainstorm sometimes. By use of qualitative analysis and definite quantitative assessment together, comprehensive evaluation method of the unit grid information was put to use for division and assessment of the prone degree of geological hazards, and the prone degree division was produced also. The focus protection area, sub-focus one, general one and their protection measures were provided further.The assessment method of background to anomaly and analogy method of eco-environment were taken to research the eco-geo-envinronment of Qianshan scenic area for the first time. Six the contaminated areas were found according to the available contents of N, P, B, Si, K, Cu, Zn, Fe, Mn, Co, Ca and Mg. Reference to the background area, the chosen areas were found to be with heigh Fe, Cu, Zn in areaâ… , Cu, Fe, Co in areaâ…¡and B, Zn, Mn in areaâ…¢. The vegetation growing was suppressed by them, which were from the iron mines nearby.The fuzzy comprehensive evaluation method was use to assess the quality of the eco-geo-environment of Qianshan scenic area on the base of experts grading, data search and full field investigation for the first time. The results showed that the quality of Dagushan iron mine and nearby was the extremely poor and the poorest one, the second was the area near road, settlements, the third was farmland, the foot of mountain, and the other places were outstanding or good. The good areage in scenic area was more than rim area, that meaned the quanlity of whole scenic area was quite good. But some places were proved to become poor.On the whole, the quality of eco-geo-environment in Anshan southern was getting poor, so that the contaminated soil and geological hazards were more and more, the quality of farm produce and vegetation were decreased. These related to the mineral mine development, industrial discharge and excessive farming. According the research results Anshan southern was divided into the different function zones.