Dynamic Change and Influence Factor Analysis of Vegetation Community of West Liaohe River Plain

A fifteen-year field trial (started in 1990) was conducted to determine the inorganic P fractions under 8 classical modes of fertilization in the lower reach of Liaohe River Plain. The results showed that Ca2-P, Ca8-P, Al-P and Fe-P decreased in the absence of P application, while increased with supplemental P addition. Interestingly, O-P and Ca10-P, with low bioavailability, increased at different levels under all treatments after 15 years. The contents of inorganic P were low in crop stalk, indicating that P supplying capacity was weak. On the contrary, both fresh pig excretion and decomposed manure were huge inorganic P pools.

Download Full-text

First record of the genus Aneuclis Förster (Hymenoptera, Ichneumonidae) from China

Zootaxa ◽

10.11646/zootaxa.4908.2.10 ◽

2021 ◽

Vol 4908 (2) ◽

pp. 292-296

Author(s):

YA-WEI WEI ◽

YONG-BIN ZHOU ◽

MAO-LING SHENG

Keyword(s):

New Species ◽

Forest Ecosystem ◽

First Record ◽

Liaoning Province ◽

Research Station ◽

Liaohe River ◽

River Plain ◽

Liaohe River Plain ◽

A New Species

A new species of the genus Aneuclis Förster, 1869, A. flavopedes Sheng, Zhou & Wei, sp.nov. collected from the field of the Research Station of Liaohe-River Plain Forest Ecosystem, Zhangwu, Liaoning Province, China, is described and illustrated. The new species is inserted into the key provided by Khalaim (2004).

Download Full-text

Evaluation of Carbon Sequestration Potential in Cropland Soil of Lower Reaches of Liaohe River Plain

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.726-731.4938 ◽

2013 ◽

Vol 726-731 ◽

pp. 4938-4944

Author(s):

Dan Song ◽

Shuang Yi Li ◽

Chen Feng ◽

Jiu Bo Pei ◽

Jing Kuan Wang

Keyword(s):

Carbon Sequestration ◽

Organic Carbon ◽

Soil Organic Carbon ◽

Paddy Field ◽

Dry Land ◽

Carbon Sequestration Potential ◽

Liaohe River ◽

Sequestration Potential ◽

River Plain ◽

Liaohe River Plain

Lower reaches of Liaohe River Plain is one of the areas where has a long history of planting in China, thus the enhancement of the capacity of soil carbon sequestration in cropland of this area has an important influence on global green house gases mitigation.Based on the 2nd National Soil Inventory data and the latest results from cropland productivity evaluation,the statistical model of soil carbon sequestration potential established by Qin et al. [, the soil organic carbon (SOC) sequestration potential was estimated and the differences of carbon sequestration ability between dry land and paddy field were compared according to the SOC spatio-temporal changes in cropland of Lower reaches of Liaohe River Plain over the last 30 years.The results show that the organic carbon density (SOCP) is 4.95 kg m-2 when the cropland soil organic carbon is saturated. The organic carbon storage in soil surface is 127.33 Tg in this area with an increase of 57.52 Tg. The organic carbon sequestration ability in paddy field is bigger than dry land in Lower reaches of Liaohe River Plain.

Download Full-text