| 农牧交错区植被特征及多样性对干扰的响应研究 |
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| 引用本文： | 程中秋,张克斌,孙喜旺,张宾宾,赵阳,王晓.农牧交错区植被特征及多样性对干扰的响应研究[J].江西农业大学学报,2011(4). |
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| 作者姓名： | 程中秋 张克斌 孙喜旺 张宾宾 赵阳 王晓 |
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| 作者单位： | 北京林业大学水土保持学院;云南今禹生态工程咨询有限公司; |
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| 基金项目： | 国家自然科学基金项目(30771764); 国家林业局宁夏盐池荒漠化定位监测项目 |
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| 摘 要： | 对不同干扰梯度下的植被特征、土壤含水量、重要值和多样性等指标进行比较分析。结果表明:随着干扰程度的加大,多年生植物的种类不断减少,植物适口性以中度干扰为最高;植被的盖度、高度及密度均是中度干扰>重度干扰>轻度干扰,生物量调查结果是重度干扰>中度干扰>轻度干扰;中度干扰和重度干扰的主要优势种重要值分布相对均匀,而轻度干扰下只是极少数几个物种有较高的重要值;多样性结果显示:中度干扰>轻度干扰>重度干扰,表明进行围封的同时进行适当的放牧干扰,才更有利于研究区植被朝多样化方向发展。综合以上分析,中度干扰(半封育措施)显然是农牧交错区植被恢复的最好方式。
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| 关 键 词： | 中度干扰 农牧交错区 重要值 围栏封育 旱生化 |
A Study on the Response of Vegetation Features and Diversity to Disturbance in the Farming-pastoral Ecotone |
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| CHENG Zhong-qiu,ZHANG Ke-bin,SUN Xi-wang,ZHANG Bin-bin,ZHAO Yang,WANG Xiao.A Study on the Response of Vegetation Features and Diversity to Disturbance in the Farming-pastoral Ecotone[J].Acta Agriculturae Universitis Jiangxiensis,2011(4). |
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| Authors: | CHENG Zhong-qiu ZHANG Ke-bin SUN Xi-wang ZHANG Bin-bin ZHAO Yang WANG Xiao |
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| Institution: | CHENG Zhong-qiu1,ZHANG Ke-bin1,SUN Xi-wang2,ZHANG Bin-bin1,ZHAO Yang1,WANG Xiao1(1.College of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China,2.Yunnan Jinyu Ecological Engineering Consulting Co.,LTD,Kunming 650021,China) |
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| Abstract: | This article compares and analyzes vegetation features,soil moisture content,importance value and diversity index under different disturbance ways.The result shows that,with the increase of disturbance,perennial plant species are on the decrease,the plant palatability under moderate disturbance is the highest.And it is also revealed that the vegetation coverage,height and density under moderate disturbance are the largest,those under severe disturbance are the second largest,those under mild disturbance are... |
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| Keywords: | moderate d isturbance farm ing-pastoral ecotone importance value enclosure drought bio-chem ical |
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