| 石羊河尾闾水面形成区土壤颗粒的分形特征 |
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| 引用本文： | 刘淑娟,袁宏波,刘世增,刘虎俊,李发明,郭树江,王琪,郭春秀,李菁菁,魏怀东.石羊河尾闾水面形成区土壤颗粒的分形特征[J].水土保持通报,2013(6):285-289. |
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| 作者姓名： | 刘淑娟 袁宏波 刘世增 刘虎俊 李发明 郭树江 王琪 郭春秀 李菁菁 魏怀东 |
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| 作者单位： | 甘肃省荒漠化与风沙灾害防治重点实验室/省部共建国家重点实验室培育基地 甘肃民勤荒漠草地生态系统国家野外科学观测研究站 甘肃省治沙研究所 甘肃 兰州 730070;甘肃省荒漠化与风沙灾害防治重点实验室/省部共建国家重点实验室培育基地 甘肃民勤荒漠草地生态系统国家野外科学观测研究站 甘肃省治沙研究所 甘肃 兰州 730070;甘肃省荒漠化与风沙灾害防治重点实验室/省部共建国家重点实验室培育基地 甘肃民勤荒漠草地生态系统国家野外科学观测研究站 甘肃省治沙研究所 甘肃 兰州 730070;甘肃省荒漠化与风沙灾害防治重点实验室/省部共建国家重点实验室培育基地 甘肃民勤荒漠草地生态系统国家野外科学观测研究站 甘肃省治沙研究所 甘肃 兰州 730070;甘肃省荒漠化与风沙灾害防治重点实验室/省部共建国家重点实验室培育基地 甘肃民勤荒漠草地生态系统国家野外科学观测研究站 甘肃省治沙研究所 甘肃 兰州 730070;甘肃省荒漠化与风沙灾害防治重点实验室/省部共建国家重点实验室培育基地 甘肃民勤荒漠草地生态系统国家野外科学观测研究站 甘肃省治沙研究所 甘肃 兰州 730070;甘肃省荒漠化与风沙灾害防治重点实验室/省部共建国家重点实验室培育基地 甘肃民勤荒漠草地生态系统国家野外科学观测研究站 甘肃省治沙研究所 甘肃 兰州 730070;甘肃省荒漠化与风沙灾害防治重点实验室/省部共建国家重点实验室培育基地 甘肃民勤荒漠草地生态系统国家野外科学观测研究站 甘肃省治沙研究所 甘肃 兰州 730070;甘肃省荒漠化与风沙灾害防治重点实验室/省部共建国家重点实验室培育基地 甘肃民勤荒漠草地生态系统国家野外科学观测研究站 甘肃省治沙研究所 甘肃 兰州 730070;甘肃省荒漠化与风沙灾害防治重点实验室/省部共建国家重点实验室培育基地 甘肃民勤荒漠草地生态系统国家野外科学观测研究站 甘肃省治沙研究所 甘肃 兰州 730070 |
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| 基金项目： | 国家自然科学基金项目“石羊河尾闾(青土湖)水面形成的生态效应研究”(31160116),“石羊河流域中下游荒漠河岸植被受损机理研究”(31060080),“人为干预下石羊河下游地下水动态变化及生态效应研究”(1260129),“干旱区内陆河(石羊河)流域水坝建设的生态响应评估”(41061046) |
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| 摘 要： | 青土湖是石羊河的尾闾湖,观测分析了距青土湖水面边缘0-500m范围内的土壤颗粒粒径分布、分形维数及其与土壤颗粒含量的关系。结果表明,0-20cm和20-40cm土层土壤颗粒的分形维数范围分别在2.3708~2.8796和2.3590~2.7509。在0~150m范围内,0-20cm土层土壤粒径分形维数与水面间距呈缓慢增加趋势,在150m处达到最大(2.8796),随后逐渐降低而20-40cm土层在0~100m范围内呈缓慢增加趋势,在100m处分形维数达到最大(2.7509)土壤颗粒分形维数大小与土壤质地的细粒化有一致的变化趋势,且与大于0.05mm粒径含量呈极显著负相关关系,而与黏粒含量、粉粒含量呈极显著正相关关系。小于0.05mm粒径物质含量的增加和>0.05mm粒径物质含量的降低共同导致了土壤颗粒分形维数在水面形成150m范围内的增大,说明水面形成对土壤粒径的影响范围在0~150m。
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| 关 键 词： | 青土湖 水面形成 土壤粒径分布 分形维数 |
| 收稿时间： | 5/8/2013 12:00:00 AM |
| 修稿时间： | 2013/5/13 0:00:00 |
Characteristics of Soil Particle Fractal Dimension After Formation of Water Area in Tail-streams of Shiyang River |
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| LIU Shu-juan,YUAN Hong-bo,LIU Shi-zen,LIU Hu-jun,LI Fa-ming,GUO Shu-jiang,WANG Qi,GUO Chun-xiu,LI Jing-jing and WEI Huan-dong.Characteristics of Soil Particle Fractal Dimension After Formation of Water Area in Tail-streams of Shiyang River[J].Bulletin of Soil and Water Conservation,2013(6):285-289. |
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| Authors: | LIU Shu-juan YUAN Hong-bo LIU Shi-zen LIU Hu-jun LI Fa-ming GUO Shu-jiang WANG Qi GUO Chun-xiu LI Jing-jing and WEI Huan-dong |
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| Institution: | Gansu Key Laboratory of Desertification Combating, Gansu Minqin National Studies Station for Desert Steppe Ecosystem, Gansu Desert Control Research Institute Lanzhou Gansu 730070 China;Gansu Key Laboratory of Desertification Combating, Gansu Minqin National Studies Station for Desert Steppe Ecosystem, Gansu Desert Control Research Institute Lanzhou Gansu 730070 China;Gansu Key Laboratory of Desertification Combating, Gansu Minqin National Studies Station for Desert Steppe Ecosystem, Gansu Desert Control Research Institute Lanzhou Gansu 730070 China;Gansu Key Laboratory of Desertification Combating, Gansu Minqin National Studies Station for Desert Steppe Ecosystem, Gansu Desert Control Research Institute Lanzhou Gansu 730070 China;Gansu Key Laboratory of Desertification Combating, Gansu Minqin National Studies Station for Desert Steppe Ecosystem, Gansu Desert Control Research Institute Lanzhou Gansu 730070 China;Gansu Key Laboratory of Desertification Combating, Gansu Minqin National Studies Station for Desert Steppe Ecosystem, Gansu Desert Control Research Institute Lanzhou Gansu 730070 China;Gansu Key Laboratory of Desertification Combating, Gansu Minqin National Studies Station for Desert Steppe Ecosystem, Gansu Desert Control Research Institute Lanzhou Gansu 730070 China;Gansu Key Laboratory of Desertification Combating, Gansu Minqin National Studies Station for Desert Steppe Ecosystem, Gansu Desert Control Research Institute Lanzhou Gansu 730070 China;Gansu Key Laboratory of Desertification Combating, Gansu Minqin National Studies Station for Desert Steppe Ecosystem, Gansu Desert Control Research Institute Lanzhou Gansu 730070 China;Gansu Key Laboratory of Desertification Combating, Gansu Minqin National Studies Station for Desert Steppe Ecosystem, Gansu Desert Control Research Institute Lanzhou Gansu 730070 China |
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| Abstract: | Qingtu Lake is the tail-streams of Shivang River.The soil particle size distribution,the fractal dimension and the relationships between the fractal dimension of soil particle size and fractal dimension within the distance of 0-500 m of the edge of Qingtu Lake's surface were analyzed.The results showed that:the range of fractal dimension of soil particles in 0-20cm, 20-40 cm soil layer were 2.3708-2.8796 and 2.3590-2.7509 respectively. Fractal dimension of 0-20 cm soil layer had a slowly increasing trend in the range of 0-150 m and reached the maximum(2.8796)at 150 m,then it gradually decreased;Fractal dimension of 20-40 cm soil layer was slowly increasing within 100 m and at 100 m reached the maximum(2.7509);The soil fractal dimension had a significant negative correlation with sand content,and significant positive correlation with proportion content of silt and clay.Both the increase of particle content with diameter<0.05 mm and decrease of particle content with diameter>0.05 mm caused the increase of fractal dimension of soil particle size after the formation of water area. |
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| Keywords: | Qintu Lake water area formation soil particle size distribution fractal dimension |
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