Evaluation of soil fertility of the shelter-forest land along the Tarim Desert Highway

查看全文 作　　者：JIN [1,2]ZhengZhong;LEI [1]JiaQiang;XU [1]XinWen;LI [1]ShengYu;ZHAO [3]SiFeng;QIU [4]YongZhi;XU [4]Bo

机构地区：[1]Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China;[2]Graduate University of Chinese Academy of Sciences,Beijing 100049,China;[3]Agricultural College of Shihhotze University,Shihezi 832003,China;[4]Tarim Branch,PetroChina Company Limited,Korla 841000,China

出　　处：《Chinese Science Bulletin》索引2008年第53卷第S2期,共12页

基　　金：Supported by Major Orientation Foundation of the CAS Innovation Program (Grant No. KZCX3-SW-342);CAS Action-Plan for West Development (Grant No. KZCX2- XB2-13);Major Scientific and Technological Special of Xinjiang Uygur Autono-mous Region (Grant No. 200733144-3);the research projects of the Tarim Branch of PetroChina Company Limited (Grant Nos. 971008090016 and 971008090017);CAS Xinjiang Institute of Ecology and Geography 'Dr. Talent' Project of Oasis Scholars Training Plan 摘　　要：To study the changes of soil fertility of the shelter-forest land along the Tarim Desert Highway, soils from the forest land were collected at the layers of 0―10 cm, 10―20 cm, 20―30 cm. Different soil fertility parameters were measured, and quantitative evaluation of soil fertility was performed by the soil integrated fertility index (IFI). The main results show that the construction of the shelter forest along the Tarim Desert Highway improved the soil physical structure, increased soil porosity and enhanced wa- ter-holding capacity. With the increase of plantation time of the shelter forest, soil microbial biomass C, N, P and the activities of six types of enzyme were enhanced, which promoted the accumulation and transformation of soil nutrients of the forest land. Consequently, the soil nutrients in 12-year-old forest land were much higher than in the newer ones and drifting sand. However, soil salt content of the older forest land was higher owing to the drip-irrigation with salt water. Through the comprehensive evalua- tion, we found that soil fertility index in the forest land was enhanced with the forest age, and it had close correlations with the growth indices of the forest trees. In summary, construction of the shelterforest along the Tarim Desert Highway accelerated the improvement of aeolian soil in the forest land, and the soil fertility improved year by year. We conclude that the forest trees grow normally under the stress of the present drip-irrigation with salt water. 关键词：TARIM DESERT Highway shelterforest land soil FERTILITY quality comprehensive EVALUATION

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Evaluation of soil fertility of the shelter-forest land along the Tarim Desert Highway

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