【正文】
鎂粉塵的土柱通過兩次淋洗試驗(yàn)后, 測(cè)得滲出液的p , 明顯高于試驗(yàn)土壤。4Mg CO3Mg (OH) 24H2O, 碳酸根離子在水中水解產(chǎn)生氫氧根離子同樣能夠增加淋洗液的p H值變化時(shí)覺察, 造成土壤p H值上升的一個(gè)重要要素是粉塵中的堿性氧化鎂導(dǎo)致的 (Machin et al., 2000) .Joshi等 (1997) 對(duì)印度Kuman Himalaya區(qū)被菱鎂礦粉塵污染的土壤和水調(diào)查時(shí)覺察土壤和水的p ~, 和本實(shí)驗(yàn)結(jié)果比擬接近。3Mg (OH) 2Mg SO48H2O, 3Mg (OH) 2Mg SO48H2O作為鎂水泥的主要組成部分, 增加了土壤外表結(jié)皮的強(qiáng)度, 這種物質(zhì)也作為土壤外表結(jié)皮的骨架, 說明石膏具有促進(jìn)結(jié)皮構(gòu)成的作用。 結(jié)論 mmmin1, , 礦區(qū)四周大量的氧化鎂粉塵積累在土壤外表會(huì)嚴(yán)峻阻礙土壤的理化性質(zhì), 尤其是在構(gòu)成厚實(shí)而堅(jiān)硬的鎂質(zhì)土壤結(jié)皮后, 改變土壤構(gòu)造, 降低土壤浸透功能?! ⒖嘉墨I(xiàn) [1]程琴娟, 蔡強(qiáng)國(guó)。 [4]付莎莎。 (碩士學(xué)位論文) .沈陽:沈陽化工大學(xué)。生態(tài)學(xué)雜志, 33 (10) :27822788. [10]吳發(fā)啟, 波。土壤通報(bào), 41 (5) :12161221. [13]楊丹。環(huán)境保護(hù)與循環(huán)經(jīng)濟(jì), 33 (7) :4751. [17]Ajwa HA, Trout and water quality effects on infiltration in sandy loam Science Society of America Journal, 70:643650. [18]AlKayssi AW, Mustafa gypsifereous soil infiltration rate under different sprinkler application rates and successive irrigation Water Management, 163:6674. [19]Ben HM, Keren effects on water infiltration and soil Science Society of America Journal, 61:565570. [20]Deng mechanism for soluble phosphates to improve the water and Concrete Research, 33:13111317. [21]Green VS, Stott DE, Graveel JG, et analysis of soil aggregates treated with anionic polyacrylamides of different molecular Science, 169:573581. [22]Joshi of magnesite industry on some environmental factors of Chandak area of Pithorgath district in central of Environmental Biology, 18:213218. [23]Kautz G, Zimmer M, Zach P, et of soil microorganisms by emissions of a magnesite plant in the Slovak , Air, and Soil Pollution, 125:121132. [24]Machin J, Navas p H changes induced by contamination by magnesium oxides DegradationDevelopment, 11:3750. [25]Mcintyre splash and the formation of surface crust by raindrop Science, 85:261266. [26]Raman N, Nagarajan N, Gopinathan S, et status of plant species colonizing a magnesite mine spoil in and Fertility of Soils, 16:7678. [27]Sojka RE, Bjorneberg DL, Entry JA, et in agriculture and environmental land in Agronomy, 92:75162. [28]Wang L, Tai PD, Jia CY, et contamination in soil at a magnesite mining region of Liaoning Province, of Environmental ContaminationToxicology, 95:9096.