Jen-Hu Chang
Datos Biográficos
| ID | 3590286 |
|---|---|
| NOMBRE | Jen-Hu Chang |
| NOMBRES | Jen-Hu |
| APELLIDO | Chang |
| FIRMA | CHANG J |
| AFILIACIONES | University of Hawaiʻi at Mānoa |
| VERIFICADO | No |
| TOTAL DE OBRAS | 19 |
| TOTAL DE CITAS | 34 |
| TOTAL COMO AUTOR | 19 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 1955 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 1980 |
| ÍNDICE H | 4 |
Some aspects of agroclimatology in Southeast Asia and New Guinea
Climatic Change and Food Production
Tropical Agriculture
Agricultural land use in the tropics is characterized by marked regional contrast, diversity of crops, and less acreage in cereal crops but more in legumes than in the temperate zone. Crop yields a
Photosynthesis of Canopy Leaves
Water Balance of Monsoon Asia
The Chinese Monsoon
Chinese literature, philosophy, and religion, and into other cultural aspects of Chinese life. The various weather types with which definitive botanical landscapes and emotional moods of the literati were closely linked have been sung and described time and again with poetic eloquence. The Chinese natural philosophers considered cyclical recurrence, of which the seasonal change of the monsoon was a typical example, to be the characteristic moveme…
Potential Photosynthesis and Crop Productivity
A model for estimating net photosynthesis is presented, based on the relationship between gross photosynthesis and solar radiation and daylength derived by Monteith, and the relationship between respiration and temperature derived by Thomas and Hill. The model has been applied to 386 stations, and world maps of potential photosynthesis for three different periods have been constructed. For the four-month summer period the highest potential photos…
Global Distribution of Net Radiation According to a New Formula
A new formula for estimating net radiation has been derived from records of solar radiation, humidity, and air temperature. The formula is believed to be an improvement over the previous ones which used cloudiness instead of solar radiation. The correlation coefficient between the computed and actual values is 0.97 and the standard error of estimate is 2.57 langleys/day. The limitations of the formula, such as the use of standard values of reflec…
Sugar Cane in Hawaii and Taiwan
wan dates back nearly a century and has long been a backbone of their respective economies. In Hawaii, sugar cane occupies two-thirds of the cultivated land, and its acreage has expanded some 10 per cent in the last 20 years (Fig. 1). In Taiwan, which is nearly twice the size of Hawaii, the cane area has fluctuated greatly in the post-war years. For the five-year period 19621966, cane acreage in Taiwan averaged 95,670 hectares which was comparabl…
Climate and Agriculture
The Agricultural Potential of the Humid Tropics
IN THE colonial days when European geographers, such as-Alexander von Humboldt and Albrecht Penck, first saw the luxuriance of tropical vegetation they were entranced and expressed optimism that with the application of modern technology rain forests could readily be cleared and sown to yield abundant harvests. The fact that the transformation has been slow and halting has often been attributed to the cultural and economic backwardness of the indi…
The Indian Summer Monsoon
EVER since Halley' formulated his monsoon theory in 1686, the Indian monsoon has been regarded as a circulation cell resulting from differential heating between land and ocean. Although this explanation is basically correct, it needs qualification and amplification on three counts. First, the heating and cooling that cause a seasonal reversal of wind direction are not merely surface phenomena. In central and southern India the highest surface tem…
On the study of evapotranspiration and water balance
Comparative Climatology of the Tropical Western Margins of the Northern Oceans
fLIMATOLOGICALLY, the western margin of a tropical ocean is basically different from its eastern counterpart. The eastern portion of a tropical ocean, located at the root region of the subtropical anticyclone, is characterized by the presence of cold ocean currents, upper-air subsidence, marked trade inversion, stratiform clouds at night, and persistent drought, especially in the summer. Downstream, toward the far west, the water temperature rise…
Zonal Indices as Related to the Winter Climate in East Asia
An Evaluation of the 1948 Thornthwaite Classification
(1959). AN EVALUATION OF THE 1948 THORNTHWAITE CLASSIFICATION. Annals of the Association of American Geographers: Vol. 49, No. 1, pp. 24-30
World Patterns of Monthly Soil Temperature Distribution 1
Collected Scientific Papers
The Climate of China According to the New Thornthwaite Classification
N this paper climatic maps of China proper and Manchuria according to the Thornthwaite 1948 classification', are presented and discussed. The maps were prepared originally on a scale of 1 to 5 million under the direction of Dr. C. W. Thornthwaite at the Laboratory of Climatology, The Johns Hopkins University. Altogether, data of 285 climatic stations were used (Fig. 1). Thornthwaite recognized that the moisture condition of a place cannot be dete…
Climate and Agriculture
Tropical Agriculture
Agricultural land use in the tropics is characterized by marked regional contrast, diversity of crops, and less acreage in cereal crops but more in legumes than in the temperate zone. Crop yields a
The Agricultural Potential of the Humid Tropics
IN THE colonial days when European geographers, such as-Alexander von Humboldt and Albrecht Penck, first saw the luxuriance of tropical vegetation they were entranced and expressed optimism that with the application of modern technology rain forests could readily be cleared and sown to yield abundant harvests. The fact that the transformation has been slow and halting has often been attributed to the cultural and economic backwardness of the indi…
Climatic Change and Food Production
Potential Photosynthesis and Crop Productivity
A model for estimating net photosynthesis is presented, based on the relationship between gross photosynthesis and solar radiation and daylength derived by Monteith, and the relationship between respiration and temperature derived by Thomas and Hill. The model has been applied to 386 stations, and world maps of potential photosynthesis for three different periods have been constructed. For the four-month summer period the highest potential photos…
Global Distribution of Net Radiation According to a New Formula
A new formula for estimating net radiation has been derived from records of solar radiation, humidity, and air temperature. The formula is believed to be an improvement over the previous ones which used cloudiness instead of solar radiation. The correlation coefficient between the computed and actual values is 0.97 and the standard error of estimate is 2.57 langleys/day. The limitations of the formula, such as the use of standard values of reflec…
The Indian Summer Monsoon
EVER since Halley' formulated his monsoon theory in 1686, the Indian monsoon has been regarded as a circulation cell resulting from differential heating between land and ocean. Although this explanation is basically correct, it needs qualification and amplification on three counts. First, the heating and cooling that cause a seasonal reversal of wind direction are not merely surface phenomena. In central and southern India the highest surface tem…
An Evaluation of the 1948 Thornthwaite Classification
(1959). AN EVALUATION OF THE 1948 THORNTHWAITE CLASSIFICATION. Annals of the Association of American Geographers: Vol. 49, No. 1, pp. 24-30
Some aspects of agroclimatology in Southeast Asia and New Guinea
The Chinese Monsoon
Chinese literature, philosophy, and religion, and into other cultural aspects of Chinese life. The various weather types with which definitive botanical landscapes and emotional moods of the literati were closely linked have been sung and described time and again with poetic eloquence. The Chinese natural philosophers considered cyclical recurrence, of which the seasonal change of the monsoon was a typical example, to be the characteristic moveme…
The Climate of China According to the New Thornthwaite Classification
N this paper climatic maps of China proper and Manchuria according to the Thornthwaite 1948 classification', are presented and discussed. The maps were prepared originally on a scale of 1 to 5 million under the direction of Dr. C. W. Thornthwaite at the Laboratory of Climatology, The Johns Hopkins University. Altogether, data of 285 climatic stations were used (Fig. 1). Thornthwaite recognized that the moisture condition of a place cannot be dete…
Collected Scientific Papers
World Patterns of Monthly Soil Temperature Distribution 1
Zonal Indices as Related to the Winter Climate in East Asia
An Evaluation of the 1948 Thornthwaite Classification
(1959). AN EVALUATION OF THE 1948 THORNTHWAITE CLASSIFICATION. Annals of the Association of American Geographers: Vol. 49, No. 1, pp. 24-30
Comparative Climatology of the Tropical Western Margins of the Northern Oceans
fLIMATOLOGICALLY, the western margin of a tropical ocean is basically different from its eastern counterpart. The eastern portion of a tropical ocean, located at the root region of the subtropical anticyclone, is characterized by the presence of cold ocean currents, upper-air subsidence, marked trade inversion, stratiform clouds at night, and persistent drought, especially in the summer. Downstream, toward the far west, the water temperature rise…
On the study of evapotranspiration and water balance
The Indian Summer Monsoon
EVER since Halley' formulated his monsoon theory in 1686, the Indian monsoon has been regarded as a circulation cell resulting from differential heating between land and ocean. Although this explanation is basically correct, it needs qualification and amplification on three counts. First, the heating and cooling that cause a seasonal reversal of wind direction are not merely surface phenomena. In central and southern India the highest surface tem…
The Agricultural Potential of the Humid Tropics
IN THE colonial days when European geographers, such as-Alexander von Humboldt and Albrecht Penck, first saw the luxuriance of tropical vegetation they were entranced and expressed optimism that with the application of modern technology rain forests could readily be cleared and sown to yield abundant harvests. The fact that the transformation has been slow and halting has often been attributed to the cultural and economic backwardness of the indi…
Climate and Agriculture
Potential Photosynthesis and Crop Productivity
A model for estimating net photosynthesis is presented, based on the relationship between gross photosynthesis and solar radiation and daylength derived by Monteith, and the relationship between respiration and temperature derived by Thomas and Hill. The model has been applied to 386 stations, and world maps of potential photosynthesis for three different periods have been constructed. For the four-month summer period the highest potential photos…
Global Distribution of Net Radiation According to a New Formula
A new formula for estimating net radiation has been derived from records of solar radiation, humidity, and air temperature. The formula is believed to be an improvement over the previous ones which used cloudiness instead of solar radiation. The correlation coefficient between the computed and actual values is 0.97 and the standard error of estimate is 2.57 langleys/day. The limitations of the formula, such as the use of standard values of reflec…
Sugar Cane in Hawaii and Taiwan
wan dates back nearly a century and has long been a backbone of their respective economies. In Hawaii, sugar cane occupies two-thirds of the cultivated land, and its acreage has expanded some 10 per cent in the last 20 years (Fig. 1). In Taiwan, which is nearly twice the size of Hawaii, the cane area has fluctuated greatly in the post-war years. For the five-year period 19621966, cane acreage in Taiwan averaged 95,670 hectares which was comparabl…
The Chinese Monsoon
Chinese literature, philosophy, and religion, and into other cultural aspects of Chinese life. The various weather types with which definitive botanical landscapes and emotional moods of the literati were closely linked have been sung and described time and again with poetic eloquence. The Chinese natural philosophers considered cyclical recurrence, of which the seasonal change of the monsoon was a typical example, to be the characteristic moveme…
Water Balance of Monsoon Asia
Photosynthesis of Canopy Leaves
Tropical Agriculture
Agricultural land use in the tropics is characterized by marked regional contrast, diversity of crops, and less acreage in cereal crops but more in legumes than in the temperate zone. Crop yields a
Some aspects of agroclimatology in Southeast Asia and New Guinea
Climatic Change and Food Production
Geography (19 obras) · Environmental Science (10 obras) · Biology (9 obras) · Geology (9 obras) · Climatology (8 obras) · Geology (8 obras) · Ecology (7 obras) · Ecology (6 obras) · Archaeology (5 obras) · Agronomy (4 obras)