【摘要】：選擇荒漠綠洲過渡帶的林地開墾區(qū)為研究對象,運用地統(tǒng)計學(xué)和Arc Gis空間分析工具相結(jié)合的方法,研究了林地開墾后土壤中有效態(tài)Fe、Cu、Zn和Mn含量的空間變異特征和豐缺狀況。結(jié)果表明:林地開墾后有效態(tài)Mn顯著缺乏(P0.05),平均值為4.24 mg·kg~(-1),低于臨界值的土壤占土壤總數(shù)的32.25%,有效態(tài)Fe和Ze次之,分別有21.82%和29.36%的樣品低于臨界值,4種微量元素空間變異強(qiáng)度均25%,呈較明顯的空間變異性;半方差函數(shù)分析中,有效態(tài)Fe塊金值最大,有效態(tài)Mn變程最小,4種有效態(tài)微量元素塊金值與基臺值的比值均25%,表明4種有效態(tài)微量元素空間依賴性均較強(qiáng);在空間結(jié)構(gòu)中,4種有效態(tài)微量元素呈明顯的片狀和斑塊狀分布,有效態(tài)Cu主要分布于研究區(qū)西南和西北部,有效態(tài)Zn和Fe主要分布于中部,有效態(tài)Mn呈東西方向?qū)ΨQ分布且東部含量大于西部;在有效性評價中,單項指數(shù)(Ei)以有效態(tài)Mn最高,達(dá)2.83,綜合指數(shù)(Ec)以有效態(tài)Fe最高,達(dá)1.27,有效態(tài)Cu的Ei值和Ec值均較低。
[Abstract]:The forest land reclamation area in the transitional zone of desert oasis was selected as the research object. The spatial variation characteristics and abundance and deficiency of available Fe,Cu,Zn and Mn contents in soil after forest land reclamation were studied by means of geostatistics and Arc Gis spatial analysis tools. The results showed that the available Mn was significantly deficient after forest land reclamation (P 0.05), the average value was 4.24 mg kg~ (- 1), the soil below the critical value accounted for 32.25% of the total soil, the available Fe and Ze were the second, 21.82% and 29.36% of the samples were lower than the critical value, respectively, and the intensity of spatial variation of the four trace elements was 25%, showing obvious spatial variability. In the analysis of semi-variance function, the effective state Fe block gold value is the largest, the effective state Mn variable range is the smallest, and the ratio of the gold value of the four effective trace elements to the base value is 25%, which indicates that the spatial dependence of the four effective trace elements is strong. In the spatial structure, four kinds of effective trace elements show obvious flake and patchy distribution. The effective Cu is mainly distributed in the southwest and northwest of the study area, the available Zn and Fe are mainly distributed in the middle, the available Mn is symmetrical in the east-west direction and the content in the east is higher than that in the west. In the validity evaluation, the effective state Mn is the highest in the single index (Ei), and the effective state Fe is the highest in the comprehensive index (Ec), which is 1.27. the E value and EC value of the effective state Cu are lower.
【作者單位】： 新疆師范大學(xué)地理科學(xué)與旅游學(xué)院;新疆維吾爾自治區(qū)重點實驗室新疆干旱區(qū)湖泊環(huán)境與資源實驗室;
【基金】：國家自然科學(xué)基金(41261046) 新疆師范大學(xué)地理學(xué)博士點支撐學(xué)科開放課題基金項目(XJNU-DL-201501)
【分類號】：S714.2

【相似文獻(xiàn)】

相關(guān)期刊論文 前5條

1 于君寶,王金達(dá),劉景雙,齊曉寧,王洋;典型黑土pH值變化對微量元素有效態(tài)含量的影響研究[J];水土保持學(xué)報;2002年02期

2 沙濟(jì)琴;鄭達(dá)賢;方祖光;謝皎如;黃義雄;;木麻黃林下土壤pH的下降及其對有效態(tài)銅、鋅、硼、鉬含量的影響[J];福建師范大學(xué)學(xué)報(自然科學(xué)版);1991年04期

3 成杰民,潘根興,鄭金偉;太湖地區(qū)水稻土pH及重金屬元素有效態(tài)含量變化影響因素初探[J];農(nóng)業(yè)環(huán)境保護(hù);2001年03期

4 華珞,白鈴玉,韋東普,陳世寶;有機(jī)肥-鎘-鋅交互作用對土壤鎘鋅形態(tài)和小麥生長的影響[J];中國環(huán)境科學(xué);2002年04期

5 ;[J];;年期

相關(guān)碩士學(xué)位論文 前1條

1 譚勇;稀土元素的生態(tài)效應(yīng)及土壤中稀土有效態(tài)的研究[D];南京農(nóng)業(yè)大學(xué);2000年

，

本文編號：2526061