[1]ZHANG Haidong,RU Haili,JIAO Feng.Biological Characteristic and Its Environmental Interpretation of Herbosa Under the Typical Vegetation Types in Loess Hilly Region[J].Research of Soil and Water Conservation,2015,22(05):100-105.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 05
Page number:
100-105
Column:
Public date:
2015-10-28
- Title:
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Biological Characteristic and Its Environmental Interpretation of Herbosa Under the Typical Vegetation Types in Loess Hilly Region
- Author(s):
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ZHANG Haidong1, RU Haili3, JIAO Feng1,2,3
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1. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
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- Keywords:
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loess hilly region; typical vegetation; species diversity; soil nutrient; soil moisture
- CLC:
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Q948.1
- DOI:
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- Abstract:
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Community biological characteristics of herbosa under four typical vegetation types (Lespedeza daurica community, LDC; Bothriochloa ischaemum community, BIC; planted locust forest, ALF; planted caragana stand, ACS) were studied based on field investigation, environmental factors of each community were analyzed by measuring soil nutrient and moisture content, and analysis on correlation between biological indexes and environmental factors was carried out. The results were shown as the followings. (1) Important values of Leguminosae, Gramineae and Compositae plants are quite high in four communities, and significant differences existed in each family between four communities. (2) Species diversity showed the sequence: ALF > ACS > LDC > BIC; community coverage showed the order: ALF > BIC > LDC > ACS; above-ground biomass of herb showed the order: BIC > ALF > ACS > LDC. (3) Contents of soil organic matter, total nitrogen, available nitrogen and available potassium showed the order: ALF > BIC > LDC > ACS, higher contents of soil total phosphorus, available phosphorus were observed under BIC and LDC. (4) Soil moisture content showed the order: BIC(8.43%) > LDC(7.60%) > ACS (6.43%) > ALF(5.85%). (5) Positive correlation between community coverage, above-ground biomass and soil nutrient was found, relationship between species diversity and soil nutrient was complicated. Both community coverage and species diversity were negatively correlated with soil moisture content. Correlation between above-ground biomass and soil moisture was not significant.