雅鲁藏布江中下游宽谷地带土壤粒径分形维数及抗风蚀能力

王学林, 陈江波, 刘昊, 宫航, 王瀚卓, 丁国栋, 赵媛媛

Fractal dimension characteristics of soil particle size distribution and wind erosion resistance in the middle-lower reaches of the Yarlung Zangbo River wide valley

Xuelin Wang, Jiangbo Chen, Hao Liu, Hang Gong, Hanzhuo Wang, Guodong Ding, Yuanyuan Zhao

表1 6种下垫面的土壤颗粒组成

Table 1 Soil particle composition for six underlying surfaces

下垫面类型	土壤深度/cm	土壤颗粒组成/%
		黏粒	粉粒	极细砂	细砂粒	中砂粒	粗砂粒	极粗砂粒
		<0.002 mm	0.002~0.05 mm	0.05~0.10 mm	0.10~0.25 mm	0.25~0.5 mm	0.5~1 mm	1~2 mm
草地	0~20	0.62±0.6^ab	22.82±16.1^ab	24.1±7.13^a	34.34±13.75^a	14.27±9.57^ab	3.5±3.13^a	0.24±0.37^a
	20~40	0.56±0.6^a	20.19±13.6^a	21.81±9.27^a	31.18±10.23^a	12.32±3.6^a	9.4±12.24^a	4.59±9.75^a
	40~60	0.21±0.3^a	12.19±9.88^a	19.12±12.29^a	37.68±15.29^ab	22.11±16.7^a	7.82±10.91^a	0.87±1.92^a
	60~80	0.19±0.27^ab	12.1±12.24^a	18.02±13.38^a	42.84±18^a	19.6±14.36^a	5.91±11.37^a	1.28±2.82^a
	80~100	0.14±0.2^a	11.04±8.82^a	17.98±13.62^a	39.48±22.3^a	18.06±10.13^a	8.76±16.9^a	3.77±8.41^a
林地	0~20	1.29±1.38^a	32.06±25.69^a	22.78±8.14^a	31.61±20.57^a	10.11±9.37^b	1.92±2.21^a	0.22±0.21^a
	20~40	1.07±1.5^a	28.1±25.94^a	20.24±8.28^a	35.79±24.12^a	11.85±11.5^a	2.23±3.73^a	0.64±1.11^a
	40~60	0.86±1.23^a	25.27±23.55^a	19.63±11.33^a	33.61±18.89^ab	16.74±17.42^a	3.41±6.09^a	0.42±1.15^a
	60~80	0.64±0.6^a	24.15±20.4^a	21.79±13.46^a	30.3±17.59^a	14.91±14.93^a	6.68±13.45^a	1.47±3.33^a
	80~100	0.63±0.68^a	25.16±24.25^a	23.09±14.8^a	30.48±19.23^a	13.85±17.95^a	4.61±8.15^a	1.78±4.96^a
耕地	0~20	0.5±0.3^ab	26.16±6.36^ab	28.43±11.5^a	30.14±7.5^a	10.87±7.94^ab	3.27±2.78^a	0.59±0.68^a
	20~40	0.49±0.53^a	27.35±10.97^a	25.48±8.89^a	27.99±7.46^a	12.94±8.31^a	4.44±4.08^a	0.59±0.68^a
	40~60	0.59±0.55^a	29.85±11.16^a	25.87±6.73^a	28.12±9.14^b	12.62±8.33^a	2.88±2.18^a	0.59±0.68^a
	60~80	0.65±0.38^a	27.8±9.96^a	23.73±7.53^a	29.25±5.1^a	14.88±9.77^a	3.66±3.12^a	0.59±0.68^a
	80~100	0.59±0.43^a	22.78±8.66^a	24.39±8.14^a	32.82±4.47^a	15.07±11.14^a	3.24±2.35^a	0.59±0.68^a
河滩地	0~20	0±0^b	6.16±3.7^b	18.7±16.95^a	43.27±13.92^a	25.15±25.1^a	6.61±9.32^a	0.11±0.15^a
	20~40	0±0^a	6.15±1.99^a	18.82±14.28^a	48.73±8.73^a	22.86±20.17^a	3.43±4.8^a	0.02±0.03^a
	40~60	0.28±0.4^a	13.71±9.74^a	27.79±19.98^a	39.61±8.02^ab	15.33±18.26^a	3.18±3.68^a	0.1±0.14^a
	60~80	0±0^b	11±3.9^a	29.23±0.14^a	51.69±7.11^a	7.37±2.32^a	0.56±0.79^a	0.14±0.2^a
	80~100	0.14±0^a	9.05±0^a	35.5±0^a	52.34±0^a	2.98±0^a	0±0^a	0±0^a
固定沙地	0~20	0.61±0.57^ab	20.08±12.17^ab	28.43±5.7^a	40.55±15.49^a	8.84±5.34^b	1.44±2.06^a	0.03±0.06^a
	20~40	0.36±0.35^a	15.17±8.78^a	26.94±7.41^a	43.29±14.68^a	11.79±9.15^a	2.39±4.42^a	0.06±0.13^a
	40~60	0.19±0.26^a	12.47±9.75^a	23.82±10.31^a	43.89±14.86^ab	16.07±14.43^a	3.45±6.41^a	0.11±0.25^a
	60~80	0.19±0.3^ab	11.36±11.09^a	21.42±12.46^a	40.31±17.64^a	18.4±12.46^a	6.66±10.75^a	1.44±4.18^a
	80~100	0.22±0.34^a	14.36±14.66^a	20.41±14.61^a	37.12±16.77^a	19.17±18.17^a	6.21±10.32^a	2.05±5.2^a
流动沙地	0~20	0.12±0.26^ab	6.82±8.34^ab	14.83±15.7^a	52.47±22.93^a	17.9±11.37^ab	4.78±9.81^a	2.65±5.93^a
	20~40	0.22±0.4^a	10.08±12.28^a	15.21±16.85^a	52.95±19.37^a	19.77±14.65^a	1.41±2.01^a	0.32±0.72^a
	40~60	0.16±0.23^a	10.22±11.99^a	15.8±15.72^a	53.63±19.46^a	18.08±13.08^a	1.84±3.04^a	0.29±0.64^a
	60~80	0.1±0.18^ab	7.71±9.06^a	14.17±17.58^a	51.76±20.88^a	20.46±15.57^a	3.03±4.9^a	2.11±4.73^a
	80~100	0.2±0.27^a	10.12±12.37^a	16.97±15.4^a	50.44±23.95^a	17.03±10.07^a	3.96±7.33^a	1.28±2.86^a