本文選題：荒漠河岸林　切入點：土壤理化性質(zhì)　出處：《水土保持研究》2016年02期 　論文類型：期刊論文

【摘要】：為揭示土壤理化性質(zhì)的空間變異特征及其與植物數(shù)量特征、物種多樣性的關(guān)系,運用相關(guān)性分析和回歸分析等方法對塔里木河中游荒漠河岸林不同生境土壤理化性質(zhì)的空間變異規(guī)律及其與植物數(shù)量特征和物種多樣性進(jìn)行了分析。結(jié)果表明:(1)不同生境土壤理化性質(zhì)有明顯的差異,表現(xiàn)為:土壤含水量、容重在河岸地帶大于過渡地帶和荒漠地帶,持水量、孔隙度、全鹽、pH值則隨著垂直于河岸距離的增加而增加,有機質(zhì)、全磷、全鉀的最大值則出現(xiàn)在水熱資源組合較好的過渡地帶,生境內(nèi)部不同土層理化因子變化呈現(xiàn)不同的規(guī)律;(2)隨著距離河岸增加,喬木、灌木、草本的頻度、蓋度、密度存在不同程度退化,物種多樣性指數(shù)也明顯降低;(3)植物數(shù)量特征、物種多樣性指數(shù)與土壤理化因子存在一定的相關(guān)性,全鹽量、容重、土壤含水量、pH、全氮、全磷與植物的數(shù)量特征指標(biāo)和物種多樣性指數(shù)的關(guān)系最為密切;(4)經(jīng)回歸分析,表明土壤含水量是影響干旱地區(qū)植物生長的首要因子,而土壤養(yǎng)分也是影響植物生長的主要因素,且有機質(zhì)、全磷、全鉀與植物生長狀況呈負(fù)相關(guān)。土壤理化性質(zhì)的空間變異不僅促使區(qū)域植物數(shù)量特征發(fā)生明顯變化,而且也影響群落的演替,同時,植物的空間分布特征對土壤理化性質(zhì)有明顯改良作用,通過二者關(guān)系的研究為塔里木河中游荒漠河岸林的恢復(fù)和土地沙化的治理提供理論支撐。
[Abstract]:In order to reveal the spatial variation characteristics of soil physical and chemical properties and their relationship with plant quantity and species diversity, The spatial variation of soil physical and chemical properties of desert riparian forest in the middle reaches of Tarim River and its relationship with plant quantity and species diversity were analyzed by means of correlation analysis and regression analysis. The physical and chemical properties of soil in different habitats were obviously different. Soil water content, bulk density in riparian zone is larger than that in transition zone and desert zone, water holding capacity, porosity, pH value of total salt increase with the increase of distance perpendicular to riverbank, organic matter, total phosphorus, The maximum value of total potassium appeared in the transition zone where the combination of water and heat resources was better. The physical and chemical factors of different soil layers in the habitat showed different laws. (2) the frequency and coverage of trees, shrubs and herbs increased with the distance from the river bank. The densities degenerated to different degrees, and the species diversity index also decreased significantly. The species diversity index was correlated with soil physical and chemical factors, total salt content, bulk density, soil water content and pH value, total nitrogen, total nitrogen, total salt content, soil water content, soil water content, total nitrogen, total salt content, soil water content, total nitrogen. The regression analysis showed that soil water content was the primary factor affecting plant growth in arid areas, and soil nutrients were also the main factors affecting plant growth. The spatial variation of soil physical and chemical properties not only promoted the change of regional plant quantity, but also affected the succession of community. The spatial distribution of plants has a significant effect on the improvement of soil physical and chemical properties. The study of the relationship between the two provides theoretical support for the restoration of desert riparian forest and the management of land desertification in the middle reaches of Tarim River.
【作者單位】： 新疆生產(chǎn)建設(shè)兵團(tuán)塔里木盆地生物資源保護(hù)利用重點實驗室;新疆塔里木大學(xué)植物科學(xué)學(xué)院;
【基金】：973計劃前期研究專項資助項目(2012CB723204) 國家自然科學(xué)基金資助項目(31360109) 兵團(tuán)博士資金資助項目(2008JC15)
【分類號】：S714.2

【共引文獻(xiàn)】

相關(guān)期刊論文 前3條

1 張玉娟;劉丹丹;;基于RS和GIS土地利用資源動態(tài)變化的研究與分析——以哈爾濱市阿城區(qū)為例[J];黑龍江交通科技;2013年08期

2 張玉娟;劉丹丹;;城市土地利用資源動態(tài)變化的研究與分析[J];哈爾濱師范大學(xué)自然科學(xué)學(xué)報;2013年02期

3 羅開盛;李仁東;;長沙市近10年土地利用變化過程與未來趨勢分析[J];中國科學(xué)院大學(xué)學(xué)報;2014年05期

相關(guān)碩士學(xué)位論文 前2條

1 王潔云;新疆水土資源的綜合承載力評價及耦合分區(qū)研究[D];中國地質(zhì)大學(xué)（北京）;2014年

2 周艷飛;基于高分辨遙感數(shù)據(jù)的胡楊、檉柳識別與樹冠提取研究[D];新疆農(nóng)業(yè)大學(xué);2014年

【二級參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 李麗君;;應(yīng)急輸水對塔里木河下游生態(tài)環(huán)境影響探討[J];吉林水利;2010年05期

2 陳小兵;楊勁松;楊朝暉;胡順軍;劉廣明;汪玉磊;;土地開發(fā)影響下的內(nèi)陸河流水質(zhì)演變研究——以塔里木河干流區(qū)上游為例[J];農(nóng)業(yè)環(huán)境科學(xué)學(xué)報;2008年01期

3 李瑛;李慧敏;周洪華;葉朝霞;;塔里木河下游工程輸水后的生態(tài)效益分析[J];新疆環(huán)境保護(hù);2010年03期

4 徐嵐,趙羿;利用馬爾柯夫過程預(yù)測東陵區(qū)土地利用格局的變化[J];應(yīng)用生態(tài)學(xué)報;1993年03期

5 萬榮榮,楊桂山;太湖流域土地利用與景觀格局演變研究[J];應(yīng)用生態(tài)學(xué)報;2005年03期

6 于興修,楊桂山,李恒鵬;典型流域土地利用/覆被變化及其景觀生態(tài)效應(yīng)——以浙江省西苕溪流域為例[J];自然資源學(xué)報;2003年01期

，

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