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1、第! “卷第#期! $ $ “年#月生态学报% $ # ; ; A B9 3男3湖南新化人3博士生3副研究员3从事湿地生态学研究C( ; D5 E 1 :1 E F G H I6 0 J K 2 LH E 0 M 2 5 N 2 N OP Q R S T U V W Q SW V X Y: Z + E 6 K N 0 6 F O _ X a X W b X TT U V X : ! $ $ # ; $ # ; ; 种植物3种子平均密度为? 8 !粒*D+!C不同植被类型的种子库的物种数和平均密度存在显著差异3疏忽蓼斑块的种子库中萌发! !种3平均密度是粒*D+!=而普通野生稻斑块种子库中只有
2、! # C每种植被类型中3均有一些物种只在种子库中出现3而另有一些物种只在植被中出现C表明种子库在湿地保护和受损湿地的恢复中具有不可替代的作用C采用移植法进行湿地植被恢复时3应综合考虑种子库与地表植被|以及不同植被类型之间的物种组成的特点3以最大限度地恢复湿地植被的物种多样性C关键词:地表植被=斑块分布=湖里沼泽=恢复 X - U V W Q S . h W d / X V 0 X X S . X X T / U S 1 .U S T . V U S T W S f b X f X V U V W Q S W S 2R - WYU g . h 33 h U - W S f 32R 4 S U
3、S5 g Q b W S a X* , j + F E ; kF 5 3* , ZK E 3Z%.+6 E 5 O G ; * K E 37 k%.+6 F K ; 8 E 5 O G7 9 x ) s x w s ! u x w r q x y w r z ! 3 # y? # “ ! 6式中8为种子库和植被中共有的物种数6 ;和=分别为种子库和植被的物种数 7 ;# ( 2 A = 2 ; 8 ; 2? 5 9 ; = 1 ;A 1 1 2 A 9 “4 2 6 2 77/ 2 5; H 8 / 5 292 ?*K , / 5 2= 7 A 1 8 : 2 :/F物种 L M N O M
4、P水毛花斑块Q FR S T U V W X Y U R Z F疏忽蓼斑块_ F S U Z R Z S aT X a F莼菜斑块b F c d S Z e Z S T F普通野生稻斑块f FS X g T h W h V F$% ($% ($% ($% (相对丰富度i M j - k O l M - m n o p - o N M # ,粉背苔草% U S Z u S X T V h U ;小蓼_ h Y t W h V X a aT V X ;圆叶节节菜萌发幼苗总数中包括这些物种的数量 M M po n m M r P 6 k 5 M P MP L M N O M P- r MO o N
5、j n p M pO ok 5 Mk k - j P w v表示年生植物- o o n - j ) $表示多年生植物L M r M o o O - j ww不同植被类型萌发的物种幼苗数通过j 1# $? 野荸荠和水竹叶只在种子库中莼菜;泽苔草;李氏禾;锐棱荸荠和莲只出现在植被中D龙师草在种子库中| x B ,)而在植被中只占 B ,普通野生稻在植被中占x + B # ,)而种子库中只占# B + ,D将x种植被类型综合)种子库共萌发z y种)而地上植被中只有 #种D在优势度最大的 个物种中)只在种子库出现的有|种)分别是异形莎草;野荸荠和灯心草只出现在植被中的物种有睡莲种D从 5 - o o
6、o多样性指数比较#图z - , 1 -4 . ?) 4 = * 0- 1 1 23 4 / 5 4 / 24 3 * 6 1 7 8 * 9 / 2: * +9 / , 1 -4 . ?) 4 = !0$ ? - . A B C- D EFG ; 1 ? 4 . / 0 ; #6 4 1 . ; = / 0 = / )V W E F E G W D X FY E Z X _ W E Z I$ J J I! a #$ $ $ )* % % , b B = TA ; = /cI7 2 0 = /= S . O= 2 ? B6T1 2 1 4 4 p7I7 2 1 1 /- 1 1 ? . ? .
7、? 1 2 T. 2 ; B 1 ; #x . ? 1 2 4 = 1 0: = / 0 . ? 1 2 0 1 A ? BS = 2 2 1 ; ? = 2 / - 1 1 ? . ? = / /? B 1x 4 = 2 0 .1 - 1 2 4 . 0 1 ; I 8 6) ! _ E X _ W E ZC D E F E G H I % + + % I “ m # $ = / ; = S ; 1 1 0U . / 5. / 0; 1 1 0 4 / A = A 9 4 . ? = / ; = S .A 1 2 1 / / . 4 T9 ; ? . 2 0 I“ e F F Xf Z l
8、F W )C E F e _ W E Z I$ J J M I# m #$ K S = 2 0bR )8 1 1 0U . / 5 / S 4 9 1 / : 1 ; = / 1 / 1 ? : 0 - 1 2 ; ? w /? B 12 . 2 1. / / 9 . 4 Y F X $ W X k W Z G W F F Z W % = 28P Ic. 4 ; )8 Ix ; B 1 2P I _X F )6 4 S 1 y B ; ? = 2 wU . ; 1 0; ? 9 0 w= SA = A 9 4 . ? = / 1 / 1 ? :; ? 2 9 : ? 9 2 1 #; 1 1
9、0U . / 5? =. 0 9 4 ? ; /* F X Z _ X G EF X Z D E F X _ X )C E F e _ W E Z I$ J J B . 4 4 Qh )Q =; 9 2 S . : 1 A 4 . / ? . / 0; = 4 ; 1 1 0U . / 5A = A 9 4 . ? = / ; 0 S S 1 2 1 / 1 ? : . 4 4 w ,6T9 4 ? A = A 9 4 . ? = /; ? 9 0 w= S ? B 10 1 ; 1 2 ? T9 ; ? . 2 0“ e F F Xf Z l W W % v 2 . ; ; : . : 1
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