Distribution of Available Silicon of Volcanic Ash Soils in Jeju Island

Table 2

Comparison of the available Si content of typifying pedons at different elevations on Jeju Island.

Order	Series	Elevation (m)	Available Si (mg·kg^−1)
			A	AB	Bw1	Bw2	BC
Andisols	Wolryeong	24	433	308	367	321	398
	Gamsan	75	123	93.4	132	161	169
	Euigwi	88	136	210	336	363	—
	Bongseong	95	100	219	237	250	228
	Jeongbang	150	243	408	679	636	—
	Ara	172	283	312	325	—	—
	Pyoseon	198	459	459	454	506	637
	Hoesu	250	236	241	255	314	271
	Topyeong	269	102	114	130	252	—
	Namwon	285	97.3	87.7	140	236	395
	Haengwon	325	136	200	253	—	323
	Minag	335	119	112	283	542	—
	Pyeongdae	366	390	433	620	516	—
	Songdang	373	339	309	460	867	852
	Hanrim	406	77.2	405	511	810	—
	Noro	646	173	360	730	788	—
	Nongo	684	71.4	563	332	488	—
	Jeogag	704	146	322	516	585	—
	Tosan	914	102	123	549	608	—
	Heugag	938	86.7	143	515	517	—
Order	Series	Elevation (m)	Available Si (mg·kg^−1)
			Ap	BA	Bt1	Bt2	Bt3
Non-Andisols	Gueom	6	392	385	261	—	—
	Gangjeong	8	86.6	65.5	91.8	145	157
	Onpyeong	10	345	310	390	428	—
	Yongsu	14	147	168	213	185	—
	Daejeong	21	110	164	113	140	—
	Mureung	22	211	148	197	154	108
	Donggong	30	208	209	164	156	150