Land Use Patterns: Effects on Soil Physical and Chemical Properties and Enzyme Activities in the Western Heilongjiang

doi:10.11923/j.issn.2095-4050.cjas20190700110

Abstract

Abstract:

The paper aims to reveal the impact of land use patterns on soil quality. Taking soils of 3land use patterns in western Heilongjiang as research objects, we determined the soil physical and chemical properties and enzyme activities. The results showed that: the land use patterns caused the change of soil physical and chemical properties: the sand content of farmland was higher than that of forest and grassland; the clay content of upper and lower layers were grassland>forest>farmlan; the differences between total phosphorus and nitrate nitrogen were significant, farmland>forest>grassland; the change rules of soil nutrients (SOC, TN, TP, NH₄⁺-N, NO₃^--N) in different soil layers were consistent, showing upper layer>lower layer; there were significant changes in soil enzyme activities in different land use patterns, but the changes were inconsistent. Correlation analysis showed that: the soil nutrient and enzyme activity showed significant or extremely significant correlation, indicating that soil nutrients might be the main cause of differences in soil enzyme activities, and might affect the circulation of C and N in the western Heilongjiang.

Key words: Land Use Patterns, Soil Quality, Western Heilongjiang, Soil Physical and Chemical Properties, Soil Enzyme Activity, Correlation analysis

CLC Number:

S154.1

Zhang Tong, Liu Yufei, Sui Xin, Song Fuqiang. Land Use Patterns: Effects on Soil Physical and Chemical Properties and Enzyme Activities in the Western Heilongjiang[J]. Journal of Agriculture, 2021, 11(5): 33-41.

Figures/Tables 5

References 37

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土地利用方式	森林		草原		农田
土层	上层	下层	上层	下层	上层	下层
砂粒(>0.05 mm)	59.64±0.93a	53.99±0.82a	49.21±0.41b	43.74±1.13b	64.45±0.38c	54.19±0.43c
粉粒(0.05~0.002 mm)	15.15±0.45a	14.41±0.24a	10.61±0.41b	15.78±0.54b	13.33±0.21c	17.09±0.4c
粘粒(<0.002 mm)	25.22±0.62a	31.61±0.62a	40.18±0.43b	40.49±1.68b	22.22±0.41c	28.72±0.05c

土地利用方式	森林		草原		农田
土层	上层	下层	上层	下层	上层	下层
砂粒(>0.05 mm)	59.64±0.93a	53.99±0.82a	49.21±0.41b	43.74±1.13b	64.45±0.38c	54.19±0.43c
粉粒(0.05~0.002 mm)	15.15±0.45a	14.41±0.24a	10.61±0.41b	15.78±0.54b	13.33±0.21c	17.09±0.4c
粘粒(<0.002 mm)	25.22±0.62a	31.61±0.62a	40.18±0.43b	40.49±1.68b	22.22±0.41c	28.72±0.05c

土地利用方式	土层/cm	含水率/%	pH	有机质/(g/kg)	全氮/(g/kg)	全磷/(g/kg)	铵态氮/(g/kg)	硝态氮/(g/kg)
森林	0~10	16.44±0.59a	9.03±0.02b	2.31±0.60b	6.23±02.39b	1.06±0.13b	2.94±0.40b	6.45±2.95ab
草原		13.54±0.28b	9.02±0.03b	2.45±0.51b	6.91±02.66b	0.90±0.04b	2.49±0.21b	2.82±0.60b
农田		13.42±1.13b	8.93±0.12b	2.04±0.09b	4.82±0.90b	1.54±0.19a	2.37±0.33b	10.36±2.28a
森林	10~20	15.95±0.39a	9.15±0.01b	1.72±0.16b	3.90±0.71b	0.96±0.04b	2.58±0.43b	4.44±1.70b
草原		13.80±0.25b	9.45±0.16a	1.89±0.42b	3.69±2.08b	0.80±0.21a	2.25±0.23b	3.05±1.09b
农田		13.54±0.62b	9.01±0.11b	2.08±0.08b	3.86±1.25b	1.42±0.03b	2.75±0.18b	12.54±2.19a

土地利用方式	土层/cm	含水率/%	pH	有机质/(g/kg)	全氮/(g/kg)	全磷/(g/kg)	铵态氮/(g/kg)	硝态氮/(g/kg)
森林	0~10	16.44±0.59a	9.03±0.02b	2.31±0.60b	6.23±02.39b	1.06±0.13b	2.94±0.40b	6.45±2.95ab
草原		13.54±0.28b	9.02±0.03b	2.45±0.51b	6.91±02.66b	0.90±0.04b	2.49±0.21b	2.82±0.60b
农田		13.42±1.13b	8.93±0.12b	2.04±0.09b	4.82±0.90b	1.54±0.19a	2.37±0.33b	10.36±2.28a
森林	10~20	15.95±0.39a	9.15±0.01b	1.72±0.16b	3.90±0.71b	0.96±0.04b	2.58±0.43b	4.44±1.70b
草原		13.80±0.25b	9.45±0.16a	1.89±0.42b	3.69±2.08b	0.80±0.21a	2.25±0.23b	3.05±1.09b
农田		13.54±0.62b	9.01±0.11b	2.08±0.08b	3.86±1.25b	1.42±0.03b	2.75±0.18b	12.54±2.19a

名称	土层/cm	含水率	pH	有机质	全氮	全磷	铵态氮	硝态氮
FDA水解酶	0~10	-0.523	-0.107	0.471	0.393	-0.332	-0.542	-0.502
FDA水解酶	10~20	-0.593	0.743*	0.088	-0.126	-0.468	-0.557	-0.407
过氧化物酶	0~10	-0.226	-0.566	0.204	0.281	-0.049	-0.181	-0.252
过氧化物酶	10~20	-0.089	0.599	0.402	0.508	-0.447	-0.377	-0.527
脲酶	0~10	0.516	0.010	0.083	-0.147	0.255	0.192	0.478
脲酶	10~20	0.202	-0.888^**	-0.139	-0.002	0.333	0.545	0.312
酸性蛋白酶	0~10	-0.596	-0.663	-0.214	-0.246	0.803^**	-0.543	0.704^*
酸性蛋白酶	10~20	0.163	0.567	0.090	0.288	-0.487	-0.834^**	-0.180
脱氢酶	0~10	0.821^**	0.306	0.055	0.399	-0.304	0.646	-0.100
脱氢酶	10~20	-0.401	-0.600	0.734^*	0.669^*	0.598	0.407	0.628
蔗糖酶	0~10	-0.234	0.016	0.318	0.371	-0.028	0.307	0.119
蔗糖酶	10~20	-0.506	0.403	0.529	0.167	0.158	-0.223	0.320