本文選題：固土保水 + 林分類型�。� 參考：《江西農(nóng)業(yè)大學學報》2017年03期

【摘要】：以江西上猶縣上備田河小流域連續(xù)8年的監(jiān)測數(shù)據(jù)為基礎(chǔ),分析比較針闊混交林、濕地松林、杉木林、馬尾松林和宜林荒山荒地(對照)5種不同林分類型的固土保水能力及其與降雨量、降雨強度、徑流量和含沙量等因子的關(guān)系。結(jié)果表明:(1)各類型的徑流量與土壤侵蝕量均呈逐年下降趨勢,其針闊混交林年平均下降率最大,分別為7.4%和22.5%,變化最小的均為宜林荒山荒地。(2)年均徑流量與年均土壤侵蝕量均表現(xiàn)為宜林荒山荒地馬尾松林杉木林濕地松林針闊混交林;針闊混交林與宜林荒山荒地的徑流量差異顯著(P0.05);針闊混交林、濕地松林、杉木林、馬尾松林與宜林荒山荒地的土壤侵蝕量均存在顯著性差異(P0.05),針闊混交林與濕地松林、杉木林、馬尾松林的土壤侵蝕量差異顯著(P0.05)。(3)不同類型的土壤侵蝕量與降雨量、降雨強度均呈顯著或極顯著相關(guān),降雨量、降雨強度對宜林荒山荒地土壤侵蝕量的影響程度最大,對針闊混交林的影響最小。
[Abstract]:Based on the monitoring data of Shangbei River small watershed in Shangyou County, Jiangxi Province for 8 consecutive years, this paper analyzed and compared the coniferous and broad-leaved mixed forest, Pinus elliottii forest and Chinese fir forest. The soil retention capacity of five different stand types in Pinus massoniana forest and barren mountain wasteland in Yilin and its relationship with rainfall intensity runoff and sediment content were studied. The results showed that the runoff and soil erosion showed a decreasing trend year by year, and the annual average decline rate of coniferous and broad-leaved mixed forest was the highest. The average annual runoff and soil erosion amount were respectively 7.4% and 22.5%, respectively, and the smallest change was in the barren mountain wasteland of Yilin. 2) the annual runoff and the average annual soil erosion amount were both coniferous and broad-leaved mixed forests of Pinus massoniana and Pinus massoniana. There were significant differences in soil erosion between coniferous and broad-leaved mixed forest and barren mountain wasteland in Yilin, coniferous and broad-leaved mixed forest, Pinus elliottii forest, Chinese fir forest, Pinus massoniana forest and barren mountain wasteland in Yilin forest, there were significant differences in soil erosion between coniferous and broad-leaved mixed forest and Pinus elliottii forest, Chinese fir forest, coniferous and broad-leaved mixed forest, Pinus elliottii forest and Chinese fir forest. The soil erosion amount of Pinus massoniana forest was significantly different (P0.05N. 3) different types of soil erosion amount and rainfall intensity were significant or extremely significant correlation, rainfall, rainfall intensity has the greatest impact on the amount of soil erosion in barren mountains and wasteland in Yilin. The effect on coniferous and broad-leaved mixed forest was the least.
【作者單位】： 江西農(nóng)業(yè)大學林學院;
【基金】：國家自然科學基金項目(31360181、30860229) 江西省林業(yè)科技創(chuàng)新專項資金項目(201607)~~
【分類號】：S714.7

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