本文選題：西藏 + 山地灌叢草地�。� 參考：《中國(guó)草地學(xué)報(bào)》2017年03期

【摘要】：對(duì)拉薩河谷不同海拔山地灌叢草地優(yōu)勢(shì)種營(yíng)養(yǎng)物質(zhì)含量的變化規(guī)律進(jìn)行了研究,結(jié)果表明:優(yōu)勢(shì)種營(yíng)養(yǎng)物質(zhì)含量隨海拔高度的增加而變化,高山嵩草、白尖苔草的粗蛋白質(zhì)含量最高,絲穎針茅的中性洗滌纖維、酸性洗滌纖維含量最高,但其粗蛋白質(zhì)和可溶性糖含量在6種優(yōu)勢(shì)種中最低,雪層杜鵑、櫻草杜鵑的可溶性糖含量最高、但其灰分、粗脂肪含量最低,喜馬拉雅草沙蠶的灰分含量最高。隨海拔高度的增加,山地灌叢草地優(yōu)勢(shì)種的中性洗滌纖維、酸性洗滌纖維和灰分含量降低,可溶性糖含量隨海拔升高而增加,粗脂肪含量隨海拔升高呈先升高后降低的"單峰曲線"變化趨勢(shì),而粗蛋白質(zhì)含量呈先降低后升高的"U"型變化趨勢(shì)。
[Abstract]:The changes of nutrient content of dominant species of shrub grassland at different altitudes in Lhasa Valley were studied. The results showed that the nutrient content of dominant species varied with the increase of altitude, Kobresia alpine, Kobresia alpine, and Kobresia alpine. The content of crude protein of Carex albicans was the highest, the content of neutral detergent fiber and acid detergent fiber was the highest, but the contents of crude protein and soluble sugar were the lowest among the six dominant species, the snow layer rhododendron. The content of soluble sugar in Rhododendron was the highest, but its ash content and crude fat content were the lowest, and the ash content of Himalayan silkworm was the highest. With the increase of altitude, the content of neutral detergent fiber, acid detergent fiber and ash of dominant species in mountain shrub grassland decreased, and the content of soluble sugar increased with elevation. The crude fat content increased at first and then decreased with the elevation, while the crude protein content decreased first and then increased.
【作者單位】： 中國(guó)農(nóng)業(yè)科學(xué)院草原研究所/農(nóng)業(yè)部草地生態(tài)與修復(fù)治理重點(diǎn)實(shí)驗(yàn)室;西藏農(nóng)牧科學(xué)院草業(yè)科學(xué)研究所;山東大學(xué)(威海)海洋學(xué)院;中國(guó)科學(xué)院地理科學(xué)與資源研究所;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(31402119) 西藏自治區(qū)科技成果轉(zhuǎn)化/示范項(xiàng)目 中科院科技服務(wù)STS計(jì)劃課題(KFJ-EW-STS-072) 中央級(jí)公益性科研院所基本科研業(yè)務(wù)費(fèi)專項(xiàng)(1610332016015)
【分類號(hào)】：S812

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