作 者：
贾萌萌;张忠良;雷加强;王永东;李生宇;沈芳宇
单 位：
中国石油天然气股份有限公司塔里木油田分公司;中国科学院新疆生态与地理研究所
关键词：
防护林地;土壤粒径;分形特征;土壤理化性质;塔里木沙漠公路
摘 要：
土壤粒径分布作为土壤重要物理特性之一,对土壤其他理化特性有着重要影响。通过野外采样与室内实验,分析了塔里木沙漠公路不同种植年限防护林地土壤粒径分布分形特征及其与土壤理化性质的关系。结果表明:防护林地土壤分形维数D介于1.432~2.208,整体处于较低水平。且分形维数D与土壤容重呈极显著负相关(P<0.000 1),与有机质和全氮呈极显著正相关(P<0.000 1),并随黏粒和粉粒含量的增多而增大,其中,粉粒含量多少对D的大小起决定作用。分形维数D可以用来表征塔里木沙漠公路防护林地极端干旱区土壤质地变化,也可作为评价塔里木沙漠公路防护林地土壤演变程度的一个综合性定量指标。
译 名：
Fractal Characteristics of Soil Particle Size Distribution in Protection Forest of Tarim Desert Highway
作 者：
JIA Meng-meng;ZHANG Zhong-liang;LEI Jia-qiang;WANG Yong-dong;LI Sheng-yu;SHEN Fang-yu;Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences;University of Chinese Academy of Sciences;Tarim Branch,PetroChina Company Limited;
关键词：
protection forest;;soil particle-size;;fractal characteristics;;soil physicochemical characteristics;;Tarim Desert Highway
摘 要：
The tarim desert highway comes through the Taklimakan desert from north to south,and there is protection forest for 436 km along the highway. Soil particle size distribution( PSD) is a fundamental soil physical property,having important influences on other soil physicochemical characteristics. This study analyzed the fractal characteristics of soil particle size distribution of different years' protection forest along Tarim Desert Highway,based on fieldwork and laboratory experiments. Then relationships between fractal dimension D and soil physicochemical characteristics including the content of clay,silt,sand,bulk density,the content of organic matter and total nitrogen were discussed. The results were as follows: 1 fractal dimension D values ranged from 1. 432 to2. 208; 2 fractal dimension D appeared significant differences among the soil layers,at 0. 01 level; 3 fractal dimension D decreased with the increasing content of sand while increased with increasing content of silt and clay;4 D value was mostly determined by the content of silt,fractal dimension D was in highly significant negative correlation with the bulk density,while in very significant positive correlation with the contents of organic matter and total N. Fractal dimension D can be applied to reveal soil texture condition and evaluate soil structure and fertility status. Fractal dimension D may be a comprehensive index to quantitatively measure the sandy soil evolution in Tarim Desert Highway protection forest.
