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云南省文山州石漠化治理的生态效益
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作者 何承刚 李宇方 +2 位作者 杨爱陵 李泽宇 黄晓霞 《安徽农业科学》 2025年第10期55-60,共6页
基于MODIS数据反演的2005和2020年云南省文山州石漠化程度数据,分析文山州石漠化治理前后不同等级石漠化景观格局的变化以及生态调节服务的综合效益,并利用广义线性模型(GLM)探讨石漠化景观格局的变化对生态系统调节服务的贡献。结果表... 基于MODIS数据反演的2005和2020年云南省文山州石漠化程度数据,分析文山州石漠化治理前后不同等级石漠化景观格局的变化以及生态调节服务的综合效益,并利用广义线性模型(GLM)探讨石漠化景观格局的变化对生态系统调节服务的贡献。结果表明:2005—2020年文山州的重度、极重度石漠化的斑块面积百分比(PLAND)和斑块聚合度指数(AI)明显降低,主要向中度和轻度石漠化转变;轻度石漠化的PLAND虽然升高,但AI下降,转化为潜在石漠化的趋势明显。经过15年治理,文山州生态系统服务集成性指数(MESLI)提升明显,尤其是石漠化分布集中的区域,这主要是与植被固碳量(VSC)、土壤有机碳固存量(SOC)、水源涵养量(WCC)、营养物质循环量(NCC)的增加有关;2005年文山州MESLI主要受到重度、潜在石漠化斑块的PLAND影响(P<0.01);2020年中度石漠化斑块AI(P<0.01)以及轻度石漠化的PLAND和AI(P<0.05)不仅影响了区域的生态综合效益,也控制了各项生态系统调节服务。 展开更多
关键词 景观格局 生态系统服务集成性指数 广义线性模型 石漠化治理 生态效益
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Application of anterior decompression and reconstruction using titanium mesh with locking plates in the management of cervical spondylotic myelopathy 被引量:3
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作者 Maolin He Zengming Xiao Shide Li Qianfen Chen 《Journal of Nanjing Medical University》 2008年第4期260-264,共5页
Objective:To observe the clinical effect of anterior decompression and reconstruction using titanium mesh with locking plates in the treatment of cervical spondylotic myelopathy. Methods:One hundred and twenty patie... Objective:To observe the clinical effect of anterior decompression and reconstruction using titanium mesh with locking plates in the treatment of cervical spondylotic myelopathy. Methods:One hundred and twenty patients with cervical spondylotic myelopathy were treated by anterior decompression and reconstruction using titanium mesh with locking plates. There were 66 men and 54 women ranges in age from 37 to 72 Years(mean age, 58.3 years). The mean Japanese orthopedic surgery association(JOA) scale was 9.6 points before operation. Patients were followed up clinically and radiographically. Results:Having stood surgery well, the operation time ranged between 60-100 min and bleeding during operation ranged between 20-200 ml. There were no case of postoperative infection, recurrent laryngeal nerve palsy, or esophageal or tracheal laceration or rupture. The average follow-up period was 14.3 months(range, 12 to 24 months) in 96 who were followed up. At the last follow-up visit the mean JOA scale had improved to 14.4 points, reflecting an improvement of 4.8 points. The results were considered to be excellent in 87 patients, good in 25, fair in 6, and poor in 2. No hardware-related complications or adjacent segment degenerative changes were encountered during the follow-up periods. Stable bone union was observed in all cases and the average time required for fusion was 5.7 months. Conclusion:Titanium mesh filled with autologous bone graft can avoid the complications associated with harvesting bone from the iliac crest donor site. When combined with cervical anterior locking plate, it can obtain satisfatory clinical results for the treatment of cervical spondylotic myelopathy. 展开更多
关键词 cervical spondylotic myelopathy titanium mesli cervical vertebrae anterior cervical plate
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