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甘肃马鹿冬季牧场牧草再生性对刈割的短期响应

马周文, 王宏, 于应文, 常生华, 周青平, 侯扶江

马周文, 王宏, 于应文, 常生华, 周青平, 侯扶江. 甘肃马鹿冬季牧场牧草再生性对刈割的短期响应[J]. 草业科学, 2018, 12(1): 157-164. DOI: 10.11829/j.issn.1001-0629.2017-0095
引用本文: 马周文, 王宏, 于应文, 常生华, 周青平, 侯扶江. 甘肃马鹿冬季牧场牧草再生性对刈割的短期响应[J]. 草业科学, 2018, 12(1): 157-164. DOI: 10.11829/j.issn.1001-0629.2017-0095
Zhou-wen Ma, Hong Wang, Ying-wen Yu, Sheng-hua Chang, Qing-ping Zhou, Fu-jiang Hou. Short-term effect of mowing winter pastures of Gansu wapiti on forage regeneration[J]. Pratacultural Science, 2018, 12(1): 157-164. DOI: 10.11829/j.issn.1001-0629.2017-0095
Citation: Zhou-wen Ma, Hong Wang, Ying-wen Yu, Sheng-hua Chang, Qing-ping Zhou, Fu-jiang Hou. Short-term effect of mowing winter pastures of Gansu wapiti on forage regeneration[J]. Pratacultural Science, 2018, 12(1): 157-164. DOI: 10.11829/j.issn.1001-0629.2017-0095

甘肃马鹿冬季牧场牧草再生性对刈割的短期响应

基金项目: 

国家自然科学基金(31672472)

国家科技支撑计划(2012BAD13B05)

甘肃省退牧还草科技支撑(2015620111000485)

摘要: 在肃南裕固族自治县甘肃马鹿(Cervus elaphus kansuensis)不同放牧率(1.00、1.45、2.45、3.45、4.85、6.90 AUM·hm-2)的冬季牧场,研究草原生产力与群落结构对牧草最佳生长期刈割的短期响应。结果表明,1)随放牧强度增加,刈割群落物种丰富度呈先增加后减少趋势,其中4.85 AUM·hm-2放牧率下的群落物种丰富度最高;刈割显著增加草地地上生物量。2)刈割群落的牧草株高和地上生物量均表现为超补偿生长,补偿指数分别以3.45、6.90 AUM·hm-2放牧样地最高;各优势种变化趋势不同。3)刈割群落的Simpson优势度指数、Pielou均匀度指数在放牧较重样地最高;随放牧强度增加,群落Shannon-Wiener多样性指数呈先增加后减少趋势,以4.85 AUM·hm-2群落最高;且除4.85 AUM·hm-2群落外,刈割后的群落Shannon-Wiener多样性指数显著高于刈割前的(P<0.05)。4)各功能群植物对不同放牧强度响应不同。因此,适宜放牧强度下,刈割能发挥草地最大生产潜力并维持群落结构稳定性。

 

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  • 收稿日期:  2017-02-28
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