本文選題：沙質(zhì)草地　切入點(diǎn)：圍封　出處：《生態(tài)環(huán)境學(xué)報(bào)》2017年06期 　論文類型：期刊論文

【摘要】：選擇科爾沁沙地自由放牧和圍封10年的沙質(zhì)草地為研究對(duì)象,通過(guò)野外調(diào)查與室內(nèi)分析相結(jié)合,分析了圍封和放牧對(duì)沙質(zhì)草地群落土壤和植被的影響,旨在為退化沙地恢復(fù)與重建提供科學(xué)依據(jù)。結(jié)果表明,(1)圍封和放牧草地蓋度、密度、地上生物量、高度存在顯著差異(P0.01),圍封使群落蓋度、密度、地上生物量和高度分別增加了67%、79%、71%和44%。(2)放牧草地物種數(shù)為15種,圍封草地為21種,放牧草地物種數(shù)增加了40%,大果蟲(chóng)實(shí)、狗尾草、差巴嘎蒿是放牧草地群落的優(yōu)勢(shì)物種,其重要值占71%;達(dá)烏里胡枝子、狗尾草、畫(huà)眉草、豬毛菜和虎尾草是圍封草地群落的優(yōu)勢(shì)物種,其重要值占60%。放牧草地處于一年生雜類草+差巴嘎蒿的沙地退化演替階段,圍封草地處于達(dá)烏里胡枝子+一年生禾草+一年生雜類草的沙地恢復(fù)演替階段。(3)圍封草地的Shannon-Wiener指數(shù)、Simpson指數(shù)、Margalef指數(shù)、Pielow均勻度指數(shù)均大于放牧草地,說(shuō)明圍封提高了群落的物種多樣性。(4)圍封和放牧草地群落0~20 cm和20~40 cm的土壤水分、土壤機(jī)械存在極顯著差異(P0.01),圍封使沙質(zhì)草地群落土壤水分、土壤黏粉粒和細(xì)砂粒增加。除速效氮外,圍封和放牧草地群落土壤的化學(xué)性質(zhì)差異顯著(P0.001)。圍封與放牧草地相比,總磷、總氮、速效磷和有機(jī)質(zhì)均呈上升趨勢(shì),增幅分別為72%、152%、15%和272%。(5)0~20 cm的土壤理化因子:土壤水分、粗砂粒、細(xì)砂粒、粉黏粒、有機(jī)質(zhì)、全氮與植被特征因子顯著相關(guān)(P0.01),表明群落植被與土壤之間相互影響較強(qiáng)。
[Abstract]:The effects of enclosure and grazing on the soil and vegetation of sandy grassland community were analyzed by field investigation and indoor analysis. In order to provide scientific basis for restoration and reconstruction of degraded sandy land, the results showed that there were significant differences in coverage, density, aboveground biomass and height between enclosure and grazing grassland. The aboveground biomass and height increased by 67.791% and 440.10%, respectively.) there were 15 species in grazing grassland, 21 species in enclosed grassland, and 40 species in grazing grassland. The important value of herbaceous herbaceous grass is 71.The dominant species of enclosed grassland community is Lesculia dauricae, Cucurbita dauricum, Sargassum dauricum and Thunb Thunb. The grazing grassland is at the stage of sandy land degradation and succession of the annual hybrid Artemisia sphaeracea, which is the dominant species in the enclosed grassland community. The Shannon-Wiener index of enclosed grassland is higher than that of grazing grassland, and the Shannon-Wiener index of enclosed grassland is higher than that of grazing grassland. The results showed that the species diversity of the community was improved by the enclosure. 4) the soil moisture of the herding grassland community was 0 ~ 20 cm and 20 ~ 40 cm, and the soil mechanical difference was very significant (P 0.01), and the soil moisture content of the sandy grassland community was increased by the enclosure. In addition to available nitrogen, the soil chemical properties of enclosed and grazing grassland communities were significantly different (P0.001). Compared with grazing grassland, total phosphorus, total nitrogen, available phosphorus and organic matter in enclosed grassland increased. The soil physical and chemical factors of soil moisture, coarse sand, fine sand, silty clay, organic matter, total nitrogen and vegetation characteristic factors were significantly related to the soil physical and chemical factors of soil moisture, coarse sand, fine sand, silt clay, organic matter, total nitrogen and vegetation characteristic factors (P0.01), respectively, indicating that the interaction between community vegetation and soil was stronger.
【作者單位】： 湖北大學(xué)資源環(huán)境學(xué)院;
【基金】：湖北省教育廳重點(diǎn)項(xiàng)目(D2015003) 湖北省科技廳軟科學(xué)專項(xiàng)(2013BDF034) 生物資源綠色轉(zhuǎn)化湖北省協(xié)同創(chuàng)新中心
【分類號(hào)】：S812

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 翟夏杰;黃頂;王X;;圍封與放牧對(duì)典型草原植被和土壤的影響[J];中國(guó)草地學(xué)報(bào);2015年06期

2 洪江濤;吳建波;王小丹;;放牧和圍封對(duì)藏北高寒草原紫花針茅群落生物量分配及碳、氮、磷儲(chǔ)量的影響[J];草業(yè)科學(xué);2015年11期

3 殷國(guó)梅;張英俊;王明瑩;薛艷林;趙和平;;短期圍封對(duì)草甸草原群落特征與物種多樣性的影響[J];中國(guó)草地學(xué)報(bào);2014年03期

4 徐粒;高瓊;王亞林;;圍封6年對(duì)溫帶典型草原坡地物種多樣性及其與地上生物量的關(guān)系的影響[J];生態(tài)環(huán)境學(xué)報(bào);2014年03期

5 范燕敏;武紅旗;孫宗玖;謝昀;何晶;柴大攀;;圍封對(duì)天山北坡荒漠草地土壤有機(jī)碳的影響[J];草地學(xué)報(bào);2014年01期

6 安慧;徐坤;;放牧干擾對(duì)荒漠草原土壤性狀的影響[J];草業(yè)學(xué)報(bào);2013年04期

7 王若夢(mèng);董寬虎;何念鵬;朱劍興;代景忠;施侃侃;;圍封對(duì)內(nèi)蒙古大針茅草地土壤碳礦化及其激發(fā)效應(yīng)的影響[J];生態(tài)學(xué)報(bào);2013年12期

8 周文萍;向丹;胡亞軍;李志芳;陳保冬;;長(zhǎng)期圍封對(duì)不同放牧強(qiáng)度下草地植物和AM真菌群落恢復(fù)的影響[J];生態(tài)學(xué)報(bào);2013年11期

9 李軍保;劉東林;吐?tīng)栠d娜依·熱依木江;朱進(jìn)忠;;伊犁河谷圍封草地群落組成及植物多樣性的變化[J];草業(yè)科學(xué);2013年05期

10 喬春連;王基恒;葛世棟;陳懂懂;趙亮;李英年;徐世曉;;圍封和放牧條件下高寒矮嵩草草甸土壤性質(zhì)的比較[J];草業(yè)科學(xué);2012年03期

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 昂倫;張衛(wèi)青;賽西雅拉圖;李曉佳;;季節(jié)性輪牧對(duì)阿巴嘎旗典型草原土壤養(yǎng)分的影響[J];干旱區(qū)資源與環(huán)境;2017年07期

2 趙麗婭;張曉雨;熊炳橋;張勁;;圍封和放牧對(duì)科爾沁沙質(zhì)草地植被和土壤的影響[J];生態(tài)環(huán)境學(xué)報(bào);2017年06期

3 李楊梅;貢璐;解麗娜;;塔里木盆地北緣綠洲不同土地利用方式下土壤有機(jī)碳含量及其碳礦化特征[J];水土保持通報(bào);2017年03期

4 張婧;左小安;呂朋;周欣;連杰;劉良旭;岳喜元;;科爾沁沙地草地植被對(duì)圍封和放牧的響應(yīng)[J];中國(guó)沙漠;2017年03期

5 王猛;袁福錦;吳文榮;黃梅芬;謝勇;陳功;;封育對(duì)滇西北亞高山草甸群落及土壤的影響[J];草原與草坪;2017年02期

6 王祥;鄭偉;朱亞瓊;關(guān)正，

本文編號(hào)：1622039