| 雷竹林生态系统健康的研究 |
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| 引用本文： | 余树全,姜春前,周国模,李翠环.雷竹林生态系统健康的研究[J].北京林业大学学报,2003,25(5):15-19. |
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| 作者姓名： | 余树全 姜春前 周国模 李翠环 |
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| 作者单位： | 1. 浙江林学院生命科学学院
2. 中国林业科学研究院国际农用林业培训中心 |
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| 基金项目： | 亚太区域示范林项目;GCP/RAS/177/JPN; |
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| 摘 要： | 该文利用比较生态学方法 ,对丰产栽培雷竹林生态系统健康状况进行全面评价 ,旨在指导雷竹林生态系统修复与维护 .在浙江省临安市雷竹林分布最多的几个乡镇 ,经过与天然状态下生长的对照竹林相比较发现 :在强烈的人为胁迫下 (丰产栽培措施 ) ,雷竹林生态系统健康全面恶化 .具体体现在 :①组织简化 ,灌木层消失 ,草本层高度降低 ,物种以短命种和r 对策种占优势 ,物种丰富度下降了 5 4 5 %,多样性指数下降了 32 %;②活力维持力差 ,丰产栽培措施提高出笋量 2 4 6 5 %,增长产值 2 6 7%,但持续时间不长 ,一般 3～ 4年 ,竹子开花率和感病率上升 ,竹林退化 ;③土壤健康恶化 ,土壤中N、P、K比例失调 ,多种酶活性下降 ,P、K元素超量富积 ;④对邻近生态系统破坏可能性加大 ;⑤对人类健康构成潜在的危害 ;⑥生态系统服务功能弱 ,水土流失增加 ,对外部输入依赖性强 ,管理选择性小 .最后 ,提出了雷竹林生态系统修复和维护建议 .
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| 关 键 词： | 生态系统健康 雷竹林 丰产栽培 生态系统活力 |
Study on Phyllostachys praecox forest ecosystem health |
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| Yu Shuquan, Jiang Chunqian, Zhou Guomo, Li Cuihuan.Faculty of Life Science,Zhejiang Forestry College,Lin'an,Zhejiang,P.R.China..Study on Phyllostachys praecox forest ecosystem health[J].Journal of Beijing Forestry University,2003,25(5):15-19. |
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| Authors: | Yu Shuquan Jiang Chunqian Zhou Guomo Li CuihuanFaculty of Life Science Zhejiang Forestry College Lin'an Zhejiang PRChina |
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| Institution: | Yu Shuquan, Jiang Chunqian, Zhou Guomo, Li Cuihuan.Faculty of Life Science,Zhejiang Forestry College,Lin'an,Zhejiang,311300,P.R.China. |
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| Abstract: | The health of Phyllostachys praecox (Lei bamboo) forest ecosystem in Lin'an City, Zhejiang Province was evaluated with comparative ecological method for sustainability of Lei forests .The results showed that intensive human disturbances greatly degenerated the health of Lei bamboo forest ecosystem. The problems were listed as follows: ①Shrub-layer disappeared, and herb-layer coverage and height decreased. R-strategy species and ephemeral therophyte were dominant, and species richness and diversity index decreased by 54.5% and 32% respectively. ②Low vitality sustainability. Through the introduction of high-yielding cultivation measures, the annual output of bamboo shoots increased by 24.65% and output value increased by 267%, but the situation could not last long. After 3～4 years, blossoming and susceptibility index will increase, land will degrade and yield will reduce gradually. ③Soil health deteriorated, nutrient (N,P,K)level unbalanced, soil enzyme activity decreased, and P,K accumulated excessively.④Destructive possibility to vicinity ecosystem increased.⑤ Human health was threatened potentially.⑥The function of ecosystem decreased, soil and water erosion increased, management options reduced. Measures of sustainable management of Lei bamboo ecosystem were suggested in the end. |
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| Keywords: | ecosystem health Lei bamboo forest high-yield cultivation ecosystem vigor |
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