| 封育对滇西北亚高山草甸群落及土壤的影响 |
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| 引用本文： | 王猛,袁福锦,吴文荣,黄梅芬,谢勇,陈功.封育对滇西北亚高山草甸群落及土壤的影响[J].草原与草坪,2017,37(2). |
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| 作者姓名： | 王猛 袁福锦 吴文荣 黄梅芬 谢勇 陈功 |
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| 作者单位： | 1. 云南农业大学 动物科技学院,云南 昆明 650201;云南省昌宁县畜牧工作站,云南 昌宁 678100;2. 云南省草地动物科学研究院,云南 昆明,650212;3. 云南农业大学 动物科技学院,云南 昆明,650201 |
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| 基金项目： | 公益性行业(农业)科研专项"青藏高原社区天然草地保护与合理利用技术研究与示范-云南迪庆香格里拉(201203006)"资助 |
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| 摘 要： | 2012年4月到2015年9月,在滇西北香格里拉县小中甸镇,以退化亚高山草甸为研究对象,测定封育条件下草地地上生物量、地下生物量、土壤容重、土壤水分和土壤有机质含量。结果表明:封育1~2年可显著提高草地地上现存量;连续封育4年后,草地地下生物量无显著变化,草地地上生物量增加了11.67倍,总生物量增加了0.74倍,有毒有害植物在地上现存量中所占比例仍然达到13.3%,对退化草地实施封育的同时应该结合除杂、补播等措施,可更有效地改善草地质量和提高草地生产力。对退化草地连续封育4年后,0~10 cm土壤容重显著降低而土壤含水量显著增加,10~40 cm土壤有机质显著增加。
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| 关 键 词： | 亚高山草甸 封育 草地生物量 植物功能群 土壤理化性状 |
Primary study on effects of enclosing on community and soil of degraded sub-alpine meadow in northwestern Yunnan Province |
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| WANG Meng,YUAN Fu-jin,WU Wen-rong,HUANG Mei-fen,XIE Yong,CHEN Gong.Primary study on effects of enclosing on community and soil of degraded sub-alpine meadow in northwestern Yunnan Province[J].Grassland and Turf,2017,37(2). |
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| Authors: | WANG Meng YUAN Fu-jin WU Wen-rong HUANG Mei-fen XIE Yong CHEN Gong |
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| Abstract: | In April 2012,the degraded sub-alpine meadow was enclosed to test the aboveground biomass,underground biomass,plant functional groups,soil bulk,soil moisture and soil organic matter content were measured from 2012 to 2015 in Xiaozhongdian Town of Shangri-la County in northwestern Yunnan.The results showed that the standing crop of enclosed pasture significantly increased in the first two years compared with the degraded area,but no more increase occurred during the third and fourth years.After four years,enclosure did not show effect on underground biomass,but could increase the aboveground biomass by as much as 11.67 times,and increase the total biomass by 0.74 times compared with degraded pasture.The proportion of biomass of poisonous and harmful species was still as high as from 13.2% to 63.5%.So,the reseeding and weeds control were necessary.After three to four years enclosing,the soil bulk density decreased and soil moisture increased significantly in 10 cm layer,and the soil organic matter content increased significantly in 10 cm to 40 cm layer. |
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| Keywords: | sub-alpine meadow pasture enclosing pasture biomass plant functional groups soil physical and chemical properties |
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