【摘要】：為了探明在川東巖溶地區(qū)蓬勃興起的休閑農(nóng)業(yè)旅游活動對土壤生態(tài)環(huán)境的影響,以重慶市銅梁區(qū)黃桷門奇彩夢園(黃門現(xiàn)代農(nóng)業(yè)園區(qū))(下稱"奇彩夢園")和北碚區(qū)金果園(休閑觀光果園)(下稱"金果園")游步道兩側的土壤樣區(qū)為研究對象,通過現(xiàn)場調查、采樣和實驗室分析,研究了土壤各生態(tài)指標受影響的距離、受沖擊規(guī)律及重金屬潛在風險。結果表明:受農(nóng)業(yè)游憩影響,兩園區(qū)土壤含水量、土壤有機質、土壤全氮及堿解氮隨著離游徑的距離變小呈遞減的趨勢,土壤容重呈遞增的趨勢,而土壤pH值僅在奇彩夢園表現(xiàn)出隨離游徑的距離變小呈遞增趨勢,各指標受影響的范圍主要集中在4m內;運用踐踏指數(shù)分析得出兩園區(qū)處于輕度踐踏狀態(tài),土壤腐殖質層和草本并沒有完全破壞,土壤生態(tài)環(huán)境在自然狀態(tài)下可以得到一定恢復。通過對兩園區(qū)土壤重金屬的評價,發(fā)現(xiàn)各樣區(qū)土壤環(huán)境處于清潔或尚清潔狀態(tài),Cd和Pb在部分樣區(qū)內含量達到安全警戒狀態(tài)(污染指數(shù)0.7),需采取措施重點防控。
[Abstract]:In order to find out the influence of leisure agricultural tourism activities on the soil ecological environment in karst areas of eastern Sichuan, Taking the soil sample areas on both sides of the walkway of Huangjuaomen Qicaimeng Garden (Huangmen Modern Agricultural Park) and Beibei Golden Orchard (Leisure Orchard) in Tongliang District of Chongqing as the research objects, the investigation was carried out on the spot. Sampling and laboratory analysis were carried out to study the impact distance, shock law and potential heavy metal risk of soil ecological indexes. The results showed that the soil water content, soil organic matter, total nitrogen and alkali-hydrolyzed nitrogen in the two parks decreased with the distance from the path, and the bulk density of the soil increased gradually under the influence of agricultural recreation. However, the soil pH value only showed an increasing trend with the distance from the swimming path decreasing in Qicai Dream Garden, and the affected range of each index was mainly within 4 m, and the analysis of trample index showed that the two parks were in a state of slight trampling. The soil humus layer and herbaceous plant were not completely destroyed, and the soil ecological environment could be restored to some extent under the natural condition. Through the evaluation of heavy metals in the soils of the two parks, it was found that the soil environment of each area was in a clean or still clean state. The contents of CD and Pb in some sample areas reached the state of safety alert (pollution index 0.7), and some measures should be taken to prevent and control the heavy metals.
【作者單位】： 陜西省土地工程建設集團;西南大學資源環(huán)境學院;重慶中國三峽博物館;
【基金】：國家“鄉(xiāng)村土地流轉與資源整合關鍵技術與示范”課題(2013BAJ11B02) 國家十二五科技支撐項目(2012BAD141318)
【分類號】：F327;F592.7;X53

【參考文獻】

相關期刊論文 前10條

1 李靈;梁彥蘭;江慧華;黃麗燕;周艷;俞建安;;旅游干擾對武夷山風景區(qū)土壤重金屬污染和土壤性質的影響[J];廣東農(nóng)業(yè)科學;2012年19期

2 李鵬;濮勵杰;章錦河;;旅游活動對土壤環(huán)境影響的國內研究進展[J];地理科學進展;2012年08期

3 韋大山;方鳳滿;楊仲元;;黃山風景區(qū)步道土壤理化性質變化特征分析[J];水土保持研究;2012年02期

4 林躍勝;方鳳滿;魏曉飛;韋大山;;黃山景區(qū)土壤重金屬分布特征及其潛在生態(tài)風險評價[J];水土保持學報;2012年02期

5 湯民;張進忠;張丹;劉萬平;余建;;果園土壤重金屬污染調查與評價——以重慶市金果園為例[J];中國農(nóng)學通報;2011年14期

6 陸林;鞏R，

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