CORRELATION BETWEEN SOIL SAL TIL ISATION AND COMMUNITY DIVERSITY : THE CASE OF FUKANG OASIS

24 3 2002 5 RESOURCES SCIENCE Vol. 24 No. 3 May 2002 2 (. 830046 ; 2. 70069) : ph 9 9 : : ; ; ; :S564 + ;Q9443 (245) :A :007-7588(2002) 03-0042 - 07 CORRELATION BETWEEN SOIL SAL TIL ISATION AND COMMUNITY DIVERSITY : THE CASE OF FUKANG OASIS GU Feng2xue ZHANG Yuan2dong PAN Xiao2ling CHU Yu ZHANGLin2jing 2 (. Department of Resources and Environment Science Xinjinag Universtiy Urumqi 830046 China ; 2. Biodiversity Research Center for Qinling Mountain Northwest Universtiy Xi an 70069 China) Abstract :By employing indicators as soil PH conductance and salt content different soil salinity degrees are plotted out. There are 9 types of salinisation levels in Fukang oasis. Within them the strong saline soil and solonchak are the main types which with regards to latitude and from the lower of diluvial fan to desert distribute in turn as middle saline soil strong saline soil solonchak strong saline soil solonchak and non2 saline distribute. Concerning indicators as the type of dominant species shrub coverage abundance and di2 versity induces as well as the principles and systems of China s vegetation class this article classified the Fukang vegetation into 9 types. These communities in latitude sequence are : Sudeda physophora communi2 ties Reaumuria soongorica communities Tamarix ramosisma communities and halophyte communities Reaumuria soongorica communities and Haloxylon ammodendron communities in turn. Reaumuria soongorica is the widely distributed zonal vegetation in Fukang interlacing with other communities. The correlation anal2 ysis shows that relationships between the degree of soil salinity and plant community coverage abundance and all diversity indices are not significant. The changes of soil salinity have significant influence on the com2 ponents of plant communities especially the dominant species and constructive species as well as on the dis2 tribution of different communities and succession. :200 - - 8 ; :2002-04 - 5 : : ( G999043503) : 995-2003 Tsinghua Tongfang Optical Disc Co. Ltd. All rights reserved.

24 3 : 43 Key words : Fukang Oasis ; Salinisation ; Plant community ; Correlation 0 0m 2 4 m 2 : ; ph = [ 2 ] Π : = ( + + )Π3 = ( + + + )Π4 22 ph ( 983) 5 ;ph SM20 ; 87 46 88 44 43 45 0 50cm ph 45 29 23 4 [0 ] : Shannon2Wiener ( H ) H = - P i ln P i Simpson ( D) D = - P 2 i Pielou ( J sw ) J sw = H Π [3 4 ] ln S Margalef ( M a ) M a = ( S - )Π log 2 N P i = N i ΠN N i 222 ; S 2 2 2000 6 3 2km ( GPS ) ; 500m 45 995-2003 Tsinghua Tongfang Optical Disc Co. Ltd. All rights reserved. 3 i ; N 3

44 24 3 50cm ph [5 6 ] 9 Table Classification of soil salinisation if Fukang oasis ( %) (ms cm - ) ph < 0. 3 <. 0 7. 5-8. 5 ( 0 2 0 3 0) 2 8. 5-9. 5 ( 2 3 ) 3 0. 3-0. 5. 0 -. 70 7. 5-8. 5 - (2 7) 4 0. 5 -. 0. 70-3. 0 7. 5-8. 5 ( 6) (3 4) - ( 2 3 2 2 3 3 5 8. 5-9. 5 4) (3 ) ( 4) ( 5 3 4) - 6. 0-2. 0 3. 0-5. 5 7. 5-8. 5 ( 0 2 9 3 9 3 0) (2 2) (2 3) ( 9) - ( 7 8. 5-9. 5 3 2) - (2 3 + 2 5 2 8 2 0 2 2 4 3 5 3 6 3 8) - ( 2 8 2 3 2 3 + 2) 8 > 2. 0 7. 5-8. 5 - ( 3 2 4) ( 7) (2 6) 9 8. 5-9. 5 - (3 7) : 268 % ph 75 ph 926 3 32 : 995-2003 Tsinghua Tongfang Optical Disc Co. Ltd. All rights reserved.

24 3 : 45 ( Suaeda acuminata) ( 3) 3 ( 9 ) ( ) Fig. Change of total salt content from south to north 33 ( 60) ( 44 %) 9 Shannon2Wiener ( H ) ( ( Reaumuria soongorica) ( Tamar2 ix ramosissima) ( Kalidium foliatum) ( Anabasis aphylla) ( Suaeda phy2 sophora) ( Haloxylon am2 modendron) Margalef ( Ma ) 45 Simpson (D) Pielou 67 ) (Jsw) Shannon2Wiener ( H ) 2 34 9 : ( Salsola passerina) ( Bassia sedoides) ( Halocnemum strobilaceum) 995-2003 Tsinghua Tongfang Optical Disc Co. Ltd. All rights reserved.

46 24 3 2 Table 2 Component of plant communities and the important value of species in Fukang Xinjiang Autonomous Region 35 2 3 4 5 6 7 ( Reaumuria soongorica) 28. 3 68 29. 5 26. 3 9. 8 ( Tamarix ramosissima) 27. 5 30. 82. 6 ( Nitraria rovorowskii) 7. 2 4. 5 22. 7 6. 3 ( Haloxylon ammodendron) 82. 7 34. 3 ( Suaeda physophora) 6 2. 7 8. 67. 9 ( Kalidium foliatum). 2 20. 3 78. 6 22 5. 9 ( Halocnemum strobilaceum) 66. ( Kalidium. gracile) 7. 8 5. 4 5 2 ( Salsola passerina) ( Anabasis aphylla) 2. 8 6. 8 ( A. eriopoda) ( Suaeda acuminata) 25. 5 62. 25. 4. 8 8. 3 33 64 ( ceratocarpus arenarius) 24. 25 7. 7 ( Artemisia borotalense) 20. 9 4. 8 28 ( Borszczowia aralocaspica) 7 0. 9 4. 36. 3 ( Bassia dasyphylla) 9. 5 23. 6 3. 37. 3 3. 7 57 ( Bassia sedoides) 26. 8 20. 6 35. 52 ( Petrosimonia sibirica) 82. 3 22. 4 49 56. 8 34. 3 7. 8 ( Phragmites austrslis) 55. 5 2. 6 ( Panaderia turkestanica) 5. 8 25 3 26. 6 : Form. Haloxylon ammodendron ; 2 Form. Reaumuria soongorica ;3 Form. Kalidium foliatum ; 4 Form. Tamarix ramosissima ; 5 Form. Suaeda acuminata ;6 Form. Bassia sedoides ;7 Form. Suaeda physophora 3 Table 3 Diversity indices of different communities H Ma Jsw D 7. 3 32. 46 0. 76 0. 77 0. 70 2 8. 8 20 30. 72 0. 92 0. 86 0. 79 3 5. 8 36 25. 40 0. 60 0. 87 0. 70 4 7 44 34. 43 0. 78 0. 74 0. 70 5 7 3 25. 64 0. 79 0. 85 0. 79 6 3 0 0. 04 0. 45 0. 75 0. 57 7 8 55 20. 54 0. 78 0. 79 0. 74 8 5 48 44. 54 0. 46 0. 88 0. 68 9 2 0 0 0. 30 0. 5 0. 43 0. 6 ph 2 ph Shannon Simpson ( P = 0. 049 P = 000) ph 85 Shannon Simpson ph ( 4) Pielou Shannon2Weirner ( H ) Margalef (Ma) Simpson : 2 % 4 Table 4 Correlation coefficient matrix of soil conductance salt content and plant community diversity indices H Ma Jsw D - 026 037 07-07 - 08 08-06 - 027 024 020-020 - 09 03-020 4 () : 995-2003 Tsinghua Tongfang Optical Disc Co. Ltd. All rights reserved.

24 3 : 47 2 ph Fig. 2 Correlation of soil ph and plant community diversity (4) (2) : 2000 (3) ph 85 Shannon Simpson! ph Margalef Pielou ( References) : [2 ] [ ]. [J ]. 995 27 () :23 27. YANG Jin2song. Prospects for Soil Salinisation [ J ]. Soil 995 27 () : 23 27. 995-2003 Tsinghua Tongfang Optical Disc Co. Ltd. All rights reserved.. [J ]. 998 2 (2) : 9 29. WANGJun2hou SI Shou2xia. Groundwater in Artificial Oasis the North2east Fringe of Ulan Bub Desert [J ]. Journal of Arid Land Resources and Environment 998 2 (2) : 9 29.

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