乾溼交替節水灌溉方法對水稻田稻叢及水域無脊椎動物群集功能多樣性的影響--結果-2 - 農業知識入口網

（二）物種組成的結構相似性
稻叢掃網所採集到的節肢動物相，第一期作共採得114種；第二期作共採得141種。水域生物相第一期作共採得32種；第二期作共採得29種。無論以豐量或出現與否的資料形態分析，ANOSIM檢測結果均顯示灌溉方法並未造成稻叢與水域生物組成間有顯著差異（表二），未達顯著水準p = 0.05。
表二、不同灌溉方法對於稻叢或水域無脊椎動物組成相似性之影響
Table 2. Analysis of similarity among the effects of different irrigation methods on epigeal and aquatic invertebrates.

Assessment	Crop season	Richness	Data type	ANOSIM
				R-value	P
Test of irrigation factor (AWD/CI) on epigeal assemblage z	1st crop season	114	Present / absent data y	0.074	0.4
			Abundance y	-0.333	0.9
	2nd crop season	141	Present / absent data	-0.556	1.0
			Abundance	-0.370	1.0
Test of irrigation factor (AWD/CI) on aquatic assemblagez	1st t crop season	32	Present / absent data	0.685	0.1
			Abundance	0.370	0.1
	2nd crop season	29	Present / absent datay	0.185	0.3
			Abundance y	0.037	0.5

^zThe significant value of aquatic assemblage is lower than epigeal assemblage.
^yThe significant value of assemblage which data counting by present / absent is lower than abundance data.
AWD, alternative watering and drying irrigation treatment. CI, conventional irrigation treatment. Pool, pooled the data that count the value of whole crop season.